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Manual Toro 3550-D

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  • Toro 3550-D - page 1

    Part No. 15213S L Service Manual Reelmast er R 3550 - D Preface The pur pose of this public ation is to pr ovide t he service technic ian with s ervic e infor mat ion for serv ice and repair of major syst ems and co mponents on the Reelmast er 3550- D. REFE R TO T HE TRACT I ON UNI T AND CUT T ING UNIT OPE RA TOR’S MA NUALS F OR O PERA T I NG, MA ...

  • Toro 3550-D - page 2

    Reelmast er 3550- D This page is intent ionall y blank . ...

  • Toro 3550-D - page 3

    Reelmast er 3550- D T able Of Contents Chap ter 1 - Safet y Gener al Safet y I nst ruc tions 1 - 2 .................. Jackin g Instructions 1 - 4 ......................... Safet y and I nst ruc tion Dec als 1 - 5 ................ Cha pte r 2 - Pr oduct Rec ords a nd Maint ena nce Produc t Records 2 - 1 ........................... Maint enance 2 - 1 ...

  • Toro 3550-D - page 4

    Reelmaster 3550−D This page is intentionally blank. ...

  • Toro 3550-D - page 5

    Reelmaster 3550−D Page 1 − 1 Safety Chapter 1 Safety T able of Contents GENERAL SAFETY INSTRUCTIONS 2 ............ Before Operating 2 ............................ While Operating 2 ............................ Maintenance and Service 3 .................... JACKING INSTRUCTIONS 4 ..................... SAFETY AND INSTRUCTION DECALS 5 .......... S ...

  • Toro 3550-D - page 6

    Reelmaster 3550−D Page 1 − 2 Safety General Safety Instructions The Reelmaster 3550−D has been tested and certified by T oro for compliance with existing safety standards and specifications. Although hazard control and acci- dent prevention partially are dependent upon the design and configuration of the machine, these factors are also depend ...

  • Toro 3550-D - page 7

    Reelmaster 3550−D Page 1 − 3 Safety Maintenance and Service 1. T he T raction Unit and Cutting Unit Operator ’ s Manu- als provide information regarding the operation, general maintenance and maintenance intervals for your Reel- master machine. Refer to these publications for addi- tional information when servicing the machine. 2. Before serv ...

  • Toro 3550-D - page 8

    Reelmaster 3550−D Page 1 − 4 Safety Jacking Instructions CAUTION When changing attachments, tires or perform- ing other service, use correct jacks and sup- ports. Make sure machine is parked on a solid, level surface such as a concrete floor . Prior to raising machine, remove any attachments that may interfere with the safe and proper raising o ...

  • Toro 3550-D - page 9

    Reelmaster 3550−D Page 1 − 5 Safety Safety and Instruction Decals Numerous safety and instruction decals are affixed to the Reelmaster 3550−D. If any decal becomes illegible or damaged, install a new decal. Decal part numbers are listed in your Parts Catalog. Safety ...

  • Toro 3550-D - page 10

    Reelmaster 3550−D Page 1 − 6 Safety This page is intentionally blank. ...

  • Toro 3550-D - page 11

    Reelmaster 3550−D Page 2 − 1 Product Records and Maintenance Chapter 2 Product Records and Maintenance T able of Contents PRODUCT RECORDS 1 ......................... MAINTENANCE 1 .............................. EQUIV ALENTS AND CONVERSIONS 2 ........... Decimal and Millimeter Equivalents 2 ............ U.S. to Metric Conversions 2 ............. ...

  • Toro 3550-D - page 12

    0.09375 Reelmaster 3550−D Page 2 − 2 Product Records and Maintenance Equivalents and Conversions ...

  • Toro 3550-D - page 13

    Reelmaster 3550−D Page 2 − 3 Product Records and Maintenance T orque Specifications Recommended fastener torque values are listed in the following tables. For critical applications, as determined by T oro, either the recommended torque or a torque that is unique to the application is clearly identified and spe- cified in this Service Manual. Th ...

  • Toro 3550-D - page 14

    Reelmaster 3550−D Page 2 − 4 Product Records and Maintenance Standard T orque for Dry , Zinc Plated and Steel Fasteners (Inch Series) Thread Size Grade 1, 5 & 8 with Thin Height Nuts SAE Grade 1 Bolts, Screws, Studs & Sems with Regular Height Nuts (SAE J995 Grade 2 or Stronger Nuts) SAE Grade 5 Bolts, Screws, Studs & Sems with Regul ...

  • Toro 3550-D - page 15

    Reelmaster 3550−D Page 2 − 5 Product Records and Maintenance Standard T orque for Dry , Zinc Plated and Steel Fasteners (Metric Series) Thread Size Class 8.8 Bolts, Screws and Studs with Regular Height Nuts (Class 8 or Stronger Nuts) Class 10.9 Bolts, Screws and Studs with Regular Height Nuts (Class 10 or Stronger Nuts) M5 X 0.8 57 + 6 in−lb ...

  • Toro 3550-D - page 16

    Reelmaster 3550−D Page 2 − 6 Product Records and Maintenance Other T orque Specifications SAE Grade 8 Steel Set Screws Thread Size Recommended T orque Square Head Hex Socket 1/4 − 20 UNC 140 + 20 in−lb 73 + 12 in−lb 5/16 − 18 UNC 215 + 35 in−lb 145 + 20 in−lb 3/8 − 16 UNC 35 + 10 ft−lb 18 + 3 ft−lb 1/2 − 13 UNC 75 + 15 ft− ...

  • Toro 3550-D - page 17

    Reelmaster 3550 - D Page 3 - 1 Kubota Diesel Engine Chapter 3 Kubota Diesel Engine T able of Contents SPECIFICA TIONS 3 .......... .................. GENERAL INFORMA TION 4 ..................... Operator ’s Manu al 4 .......................... Kubota Workshop Manual 4 .................... Kubota Diesel Engi ne 4 ........................ SERVICE a ...

  • Toro 3550-D - page 18

    Reelmaster 3550−D Page 3 − 2 Kubota Diesel Engine This page is intentionally blank. ...

  • Toro 3550-D - page 19

    Reelmaster 3550 - D Page 3 - 3 Kubota Diesel Engine Specifications Item Description Make / Designation Kubota D1 105 - E3B or D1 105 - E4B 4 - Cycle, 3 Cylinder , Liqui d Cooled, Diesel Engine Bore x Stroke 3.07” x 3.09” (78 mm x 78.4 mm) T otal Displacement 68.5 in 3 (1 123 cc) Firing Order 1 (fan end) - 2 - 3 (flywheel end) Direction of Rotat ...

  • Toro 3550-D - page 20

    Reelmaster 3550 - D Page 3 - 4 Kubota Diesel Engine General Information This Chapter gives information abou t specifications and repair of the diesel eng ine used in the Reelmaster 3550 - D. General maintena nce procedures ar e described in your T raction Unit Operator ’s Manual. Information on engine troubleshooting, te sting, disassembl y and a ...

  • Toro 3550-D - page 21

    Reelmaster 3550−D Page 3 − 5 Kubota Diesel Engine This page is intentionally left blank. Kubota Diesel Engine ...

  • Toro 3550-D - page 22

    Reelmaster 3550−D Page 3 − 6 Kubota Diesel Engine Service and Repairs Air Cleaner and Muffler Figure 2 1. Exhaust guard 2. Cap screw 3. Muffler 4. Flange head screw 5. Flange nut 6. Muffler bracket 7. Hex nut 8. Lock washer 9. Exhaust gasket 10. Hose clamp 1 1. Air inlet hose (upper) 12. Hose clamp 13. Air cleaner body 14. Filter cover 15. Burp ...

  • Toro 3550-D - page 23

    Reelmaster 3550−D Page 3 − 7 Kubota Diesel Engine Check Air Filter , Dust Cup, & Burp V alve The air cleaner body , air filter , dust cup, and burp valve should be checked daily , prior to operation. IMPORT ANT : Any leaks in the air cleaner system will cause serious engine damage. Make sure that all air cleaner components are in good condi ...

  • Toro 3550-D - page 24

    Reelmaster 3550−D Page 3 − 8 Kubota Diesel Engine Fuel System Figure 5 1. Fuel tank 2. Grommet 3. Fuel gauge 4. Seat support strap (2) 5. Heat shield 6. Washer head screw (4) 7. Fuel hose (tank to pump) 8. Bushing (2) 9. Elbow fitting 10. Stand pipe 1 1. Hose clamp (7) 12. Fuel hose (tee to tank) 13. Cap screw (2) 14. Fuel hose strap 15. Fuel c ...

  • Toro 3550-D - page 25

    Reelmaster 3550−D Page 3 − 9 Kubota Diesel Engine DANGER Because diesel fuel is flammable, use caution when storing or handling it. Do not smoke while filling the fuel tank. Do not fill fuel tank while en- gine is running, hot or when machine is in an e n - closed area. Always fill fuel tank outside and wipe up a n y s p i l l e d diesel fuel b ...

  • Toro 3550-D - page 26

    Reelmaster 3550−D Page 3 − 10 Kubota Diesel Engine Radiator and Oil Cooler Assembly Figure 7 1. Draincock valve 2. Flange head screw (8) 3. Flange nut (4) 4. Carriage bolt (4) 5. Radiator/oil cooler assembly 6. LH fan shroud 7. RH fan shroud 8. Flange head screw (4) 9. Hose clamp (2) 10. Flange head screw (6) 1 1. Overflow bottle bracket 12. Ra ...

  • Toro 3550-D - page 27

    Reelmaster 3550 - D Page 3 - 1 1 Kubota Diesel Engine Removal (Fig. 7) 1. Park machine on a level surface, lowe r cutting units, stop engine, engag e parking brak e and remove key from the ignition s witch. 2. Open an d remove hood from the machi ne. CAUTION Do not open radiator cap or drai n coolant if the radiator or engine is hot. Pressurized, h ...

  • Toro 3550-D - page 28

    Reelmaster 3550−D Page 3 − 12 Kubota Diesel Engine Engine Figure 8 1. Engine mount bracket − RH 2. Cap screw 3. Hardened washer 4. Engine mount 5. Lower radiator hose 6. Hose clamp 7. Exhaust flange gasket 8. Coolant temperature switch 9. Upper radiator hose 10. Wire Harness − fusible link 1 1. Flat washer 12. Lock washer 13. Hex nut 14. Fl ...

  • Toro 3550-D - page 29

    Reelmaster 3550−D Page 3 − 13 Kubota Diesel Engine Removal (Fig. 8) 1. Park machine on a level surface, lower cutting units, stop engine, engage parking brake, and remove key from the ignition switch. 2. Open and remove engine hood from the machine. Slide seat all the way forward. 3. Disconnect air hose from the air cleaner and radiator . Remov ...

  • Toro 3550-D - page 30

    Reelmaster 3550−D Page 3 − 14 Kubota Diesel Engine CAUTION Make sure lift or hoist can support the total weight of the engine before removing the cap screws from the engine and engine brackets. 13. Remove hex nuts, cap screws, and washers from the center of the three engine mounts. CAUTION One person should operate lift or hoist while the other ...

  • Toro 3550-D - page 31

    Reelmaster 3550−D Page 3 − 15 Kubota Diesel Engine 15. Separate hydrostat and pump assembly from the en- gine as follows (Fig. 12): A. Remove traction belt from the engine flywheel and hydrostat pulleys. B. Remove five cap screws, washers, and spacers securing the pump mount plate to the engine. C. Remove two cap screws and flange nuts secur- i ...

  • Toro 3550-D - page 32

    Reelmaster 3550−D Page 3 − 16 Kubota Diesel Engine This page is intentionally blank. ...

  • Toro 3550-D - page 33

    Reelmaster 3550 - D Hydraulic System Page 4 - 1 Chapter 4 Hydraulic System T able of Contents SPECIFICA TIONS 2 .......... .................. GENERAL INFORMA TION 3 ..................... Operator ’s Manu al 3 .......................... Relieving Hydraulic System Pressure 3 .......... T raction Circuit Component Failure 3 ............ Hydraulic Ho ...

  • Toro 3550-D - page 34

    Reelmaster 3550−D Hydraulic System Page 4 − 2 Specifications Item Description Piston Pump (Hydrostat) V ariable displacement piston pump Charge Pressure Specification:100 to 150 PSI (6.9 to 10.3 bar) T ested: 150 to 200 PSI (10.3 to 13.8 bar) Maximum Displacement 1.44 in 3 /rev (23.6 cc/rev) T raction Circuit Relief Pressure (Forward Only) 3500 ...

  • Toro 3550-D - page 35

    Reelmaster 3550−D Hydraulic System Page 4 − 3 General Information Operator ’ s Manual The T raction Unit and Cutting Unit Operator ’s Manuals provide information regarding the operation, general maintenance and maintenance intervals for your Reel- master machine. Refer to these publications for addi- tional information when servicing the ma ...

  • Toro 3550-D - page 36

    Reelmaster 3550−D Hydraulic System Page 4 − 4 Hydraulic Hoses Hydraulic hoses are subject to extreme conditions such as pressure differentials during operation and exposure to weather , sun, chemicals, very warm storage condi- tions or mishandling during operation and maintenance. These conditions can cause hose damage and deterio- ration. Some ...

  • Toro 3550-D - page 37

    Reelmaster 3550−D Hydraulic System Page 4 − 5 Hydraulic Hose and T ube Installation (O−Ring Face Seal Fitting) 1. Make sure threads and sealing surfaces of the hose/ tube and the fitting are free of burrs, nicks, scratches or any foreign material. 2. As a preventative measure against leakage, i t is rec- ommended that the face seal O−ring b ...

  • Toro 3550-D - page 38

    Reelmaster 3550−D Hydraulic System Page 4 − 6 Hydraulic Fitting Installation (SAE Straight Thread O−Ring Fitting into Component Port) Non−Adjustable Fitting (Fig. 4) 1. Make sure all threads and sealing surfaces of fitting and component port are free of burrs, nicks, scratches or any foreign material. 2. As a preventative measure against le ...

  • Toro 3550-D - page 39

    Reelmaster 3550−D Hydraulic System Page 4 − 7 Adjustable Fitting (Fig. 6) 1. Make sure all threads and sealing surfaces of fitting and component port are free of burrs, nicks, scratches or any foreign material. 2. As a preventative measure against leakage, i t is rec- ommended that the O−ring be replaced any time the connection is opened. 3. ...

  • Toro 3550-D - page 40

    Reelmaster 3550−D Hydraulic System Page 4 − 8 Special T ools Order the following special tools from your T oro Distributor . Hydraulic Pressure T est Kit Use to take various pressure readings for diagnostic tests. Quick disconnect fittings provided attach directly to mating fittings on machine test ports without tools. A high pressure hose is p ...

  • Toro 3550-D - page 41

    Reelmaster 3550−D Hydraulic System Page 4 − 9 40 GPM Hydraulic T ester (Pressure and Flow) Use to test hydraulic circuits and components for flow an d pressure capacities as recommended in the T esting section of this chapter . This tester includes the following: 1. LOAD V AL VE: A simulated working load is created in the circuit by turning the ...

  • Toro 3550-D - page 42

    Reelmaster 3550−D Hydraulic System Page 4 − 10 High Flow Hydraulic Filter Kit The high flow hydraulic filter kit is designed with large flow (40 GPM/150 LPM) and high pressure (5000 PSI/345 bar) capabilities. This kit provides for bi−direc- tional filtration which prevents filtered debris from being allowed back into the circuit regardless of ...

  • Toro 3550-D - page 43

    Reelmaster 3550−D Hydraulic System Page 4 − 1 1 Measuring Container Use this container for doing hydraulic motor efficiency testing (motors with case drain lines only). Measure ef fi- ciency of a hydraulic motor by restricting the outlet flow from the motor and measuring leakage from the case drain line while the motor is pressurized by the hyd ...

  • Toro 3550-D - page 44

    Reelmaster 3550−D Hydraulic System Page 4 − 12 Remote Starter Switch After flushing the hydraulic system or replacing a hy- draulic component (e.g. gear pump, piston pump, wheel motor), it is necessary to prime the hydraulic pumps. A remote starter switch (Fig. 17) can be used for this pur- pose. Obtain a remote starter switch locally . IMPORT ...

  • Toro 3550-D - page 45

    Reelmaster 3550−D Hydraulic System Page 4 − 13 Wheel Hub Puller T oro Part Number: TOR4097 The wheel hub puller allows safe removal of the wheel hub from the shaft of wheel motors. Figure 20 Hydraulic System ...

  • Toro 3550-D - page 46

    Reelmaster 3550−D Hydraulic System Page 4 − 14 Hydraulic Schematic Hydraulic Schematic Reelmaster 3550−D All solenoids are shown as de−energized NOTE: A larger hydraulic schematic is included in Chapter 8 − Foldout Drawings. .73 .33 .58 500 PSI 3500 PSI 100−150 PSI 12.0 12.0 24.7 1.44 6.1 1000 PSI STEERING CYLINDER ENGINE IDLE 3200 / 14 ...

  • Toro 3550-D - page 47

    Reelmaster 3550−D Hydraulic System Page 4 − 15 This page is intentionally blank. Hydraulic System ...

  • Toro 3550-D - page 48

    Reelmaster 3550−D Hydraulic System Page 4 − 16 Hydraulic Flow Diagrams STEERING CYLINDER STEERING CONTROL VA LV E Extend T o Lower Extend T o Lower T raction Circuit (Forward) Working Pressure Low Pressure (Charge) Return or Suction Flow Reelmaster 3550−D .73 .33 .58 500 PSI 3500 PSI 100−150 PSI 12.0 12.0 24.7 1.44 6.1 1000 PSI ENGINE IDLE ...

  • Toro 3550-D - page 49

    Reelmaster 3550−D Hydraulic System Page 4 − 17 T raction Circuit The traction circuit of the hydraulic system consists of a hydrostat connected in a closed loop circuit to three or- bital geroller wheel motors. The mow/transport slide control on Reelmaster 3550−D machines has positions for mow and transport. The mo w position allows traction ...

  • Toro 3550-D - page 50

    Reelmaster 3550−D Hydraulic System Page 4 − 18 STEERING CYLINDER Cutting Unit Circuit − Mow High Pressure Low Pressure (Charge) Return or Suction Flow Reelmaster 3550−D .73 .33 .58 500 PSI 3500 PSI 100−150 PSI 12.0 12.0 24.7 1.44 6.1 1000 PSI ENGINE IDLE 3200 / 1400 PUMP RPM = 0.96 x ENGINE RPM BACKLAP SWITCH (SW) REEL #4 LC FC PRV MV T M ...

  • Toro 3550-D - page 51

    Reelmaster 3550−D Hydraulic System Page 4 − 19 Cutting Unit Circuit Mow The tandem gear pump is directly coupled to the piston pump/hydrostat which is belt driven by the engine. The front section of the gear pump (P1) supplies hydraulic flow for the cutting unit circuit. The gear pump takes its suction from the hydraulic tank. Proportional reli ...

  • Toro 3550-D - page 52

    Reelmaster 3550−D Hydraulic System Page 4 − 20 STEERING CYLINDER Lift Circuit: Lower Working Pressure Low Pressure (Charge) Return or Suction Flow Groundmaster 3505−D .73 .33 .58 500 PSI 3500 PSI 100−150 PSI 12.0 12.0 24.7 1.44 6.1 1000 PSI ENGINE IDLE 3200 / 1400 PUMP RPM = 0.96 x ENGINE RPM BACKLAP SWITCH (SW) REEL #4 LC FC PRV MV T M1 C1 ...

  • Toro 3550-D - page 53

    Reelmaster 3550−D Hydraulic System Page 4 − 21 Lift Circuit: Lower The tandem gear pump is directly coupled to the vari- able displacement piston pump/hydrostat which is belt driven by the engine. The rear section of the tandem gear pump (P2) supplies hydraulic flow for the steering circuit (priority flow), for raising and lowering the cutting ...

  • Toro 3550-D - page 54

    Reelmaster 3550−D Hydraulic System Page 4 − 22 STEERING CYLINDER Lift Circuit: Raise Working Pressure Low Pressure (Charge) Return or Suction Flow Groundmaster 3505−D .73 .33 .58 500 PSI 3500 PSI 100−150 PSI 12.0 12.0 24.7 1.44 6.1 1000 PSI ENGINE IDLE 3200 / 1400 PUMP RPM = 0.96 x ENGINE RPM BACKLAP SWITCH (SW) REEL #4 LC FC PRV MV T M1 C1 ...

  • Toro 3550-D - page 55

    Reelmaster 3550−D Hydraulic System Page 4 − 23 Lift Circuit: Raise The tandem gear pump is directly coupled to the vari- able displacement piston pump/hydrostat which is belt driven by the engine. The rear section of the tandem gear pump (P2) supplies hydraulic flow for the steering circuit (priority flow), for raising and lowering the cutting ...

  • Toro 3550-D - page 56

    Reelmaster 3550−D Hydraulic System Page 4 − 24 STEERING CYLINDER Steering Circuit (Right T urn Shown) Working Pressure Low Pressure (Charge) Return or Suction Flow Groundmaster 3505−D .73 .33 .58 500 PSI 3500 PSI 100−150 PSI 12.0 12.0 24.7 1.44 6.1 1000 PSI ENGINE IDLE 3200 / 1400 PUMP RPM = 0.96 x ENGINE RPM BACKLAP SWITCH (SW) REEL #4 LC ...

  • Toro 3550-D - page 57

    Reelmaster 3550−D Hydraulic System Page 4 − 25 Steering Circuit The tandem gear pump is directly coupled to the vari- able displacement piston pump/hydrostat which is belt driven by the engine. The rear section of the tandem gear pump (P2) supplies hydraulic flow for the steering circuit (priority flow), for raising and lowering the cutting uni ...

  • Toro 3550-D - page 58

    Reelmaster 3550−D Hydraulic System Page 4 − 26 T roubleshooting The chart that follows contains information to assist in troubleshooting. There may possibly be more than one cause for a machine malfunction. Review the hydraulic schematic and information on hy- draulic system operation in the Hydraulic Flow Dia- grams section of this Chapter . T ...

  • Toro 3550-D - page 59

    Reelmaster 3550−D Hydraulic System Page 4 − 27 T raction Circuit Problems Problem Possible Cause Neutral is difficult to find or machine operates in one direction only . External control linkage is misadjusted, disconnected, binding or damaged. T raction pump/hydrostat is worn or damaged. T raction response is sluggish. Bypass valve in traction ...

  • Toro 3550-D - page 60

    Reelmaster 3550−D Hydraulic System Page 4 − 28 Lift Circuit Problems Problem Possible Cause Cutting units will not lift or lift slowly . Engine speed is too low . Hydraulic tank oil level is low ( NOTE: Other hydraulic systems are affected as well). An electrical problem exists that prevent lift control manifold solen- oids from being energized ...

  • Toro 3550-D - page 61

    Reelmaster 3550−D Hydraulic System Page 4 − 29 Steering Circuit Problems Problem Possible Cause Steering inoperative or sluggish Oil level in hydraulic reservoir is low ( NOTE: Other hydraulic systems are affected as well). Steering components (e.g. steering fork assembly , steering cylinder ends) are worn or binding. Relief valve in steering c ...

  • Toro 3550-D - page 62

    Reelmaster 3550−D Hydraulic System Page 4 − 30 Mow Circuit Problems Problem Possible Cause Gear pump is noisy (cavitation). Hydraulic tank oil level is low ( NOTE: Other hydraulic systems are affected as well). Suction line is restricted. Suction line has an air leak. None of the cutting reels will turn. NOTE: T o engage the mow circuit, the se ...

  • Toro 3550-D - page 63

    Reelmaster 3550−D Hydraulic System Page 4 − 31 T esting The most effective method for isolating problems in the hydraulic system is by using hydraulic test equipment such as pressure gauges and flow meters in the various hydraulic circuits to perform various operational checks (See the Special T ools section in this chapter). Remember that pres ...

  • Toro 3550-D - page 64

    Reelmaster 3550−D Hydraulic System Page 4 − 32 NOTE: Engine−to−Pump ratio is 1:0.96. In other words, 1 engine RPM = 0.96 pump RPM. 4. Th e inlet and the outlet hoses must be properly con- nected and not reversed (hydraulic tester with pressure an d flow capabilities) to prevent damage to the hydraulic tester or components. 5. When using a h ...

  • Toro 3550-D - page 65

    Reelmaster 3550−D Hydraulic System Page 4 − 33 This page is intentionally blank. Hydraulic System ...

  • Toro 3550-D - page 66

    Reelmaster 3550−D Hydraulic System Page 4 − 34 T raction Circuit T esting − Charge Pressure T est High Pressure Low Pressure Return or Suction Flow TO STEERING CONTROL V AL VE (P) PORT 3500 PSI 100−150 PSI G2 G1 C2 200−300 BYP ASS VA LV E SUCTION STRAINER P1 P2 TRACTION WHEEL MOTORS FRONT REAR FRONT PSI GEAR PUMP TO MOW CONTROL MANIFOLD ( ...

  • Toro 3550-D - page 67

    Reelmaster 3550−D Hydraulic System Page 4 − 35 T raction Circuit T esting − Charge Pressure T est: The charge pressure test is the first in a series of tests recommended to determine traction circuit perform- ance. A charge pressure drop of more than 20% indic- ates an internal leak in the piston pump/hydrostat. Continued unit operation can g ...

  • Toro 3550-D - page 68

    Reelmaster 3550−D Hydraulic System Page 4 − 36 T raction Unit T esting − Wheel Motor Efficiency T ests Figure 27 3500 PSI 100−150 PSI G2 G1 C2 200−300 BYP ASS VA LV E TRACTION WHEEL MOTORS FRONT REAR FRONT PSI HYDROST A T FROM CHARGE RELIEF FORW ARD TESTER WITH PRESSURE GUAGE AND FLOW METER LOWER PORT UPPER PORT High Pressure Low Pressure ...

  • Toro 3550-D - page 69

    Reelmaster 3550−D Hydraulic System Page 4 − 37 T raction Circuit T esting − Wheel Motor Efficiency T est: Wheel motor ef ficiency is the second in a series of tests recommended to determine traction circuit perform- ance. Hydraulic fluid flow of 1.5 GPM (5.7 LPM) or more through a stationary wheel motor under load indicates an internal leak i ...

  • Toro 3550-D - page 70

    Reelmaster 3550−D Hydraulic System Page 4 − 38 7. V erify with a phototach that the pump speed is ap- proximately 3090 RPM. CAUTION Us e extreme caution when performing wheel m o - to r tests. The wheel motors will be trying to move the machine forward. 8. Sit in the operators seat, release the parking brake, and set the Mow/T ransport slide to ...

  • Toro 3550-D - page 71

    Reelmaster 3550−D Hydraulic System Page 4 − 39 Rear Wheel Motor T est: Hydraulic fluid flows through both front wheel motors (i n parallel) before passing through the rear wheel motor (in series). T o accurately test the rear wheel motor , the front wheel motors must be allowed to rotate. 1. Disconnect hose from the upper hydraulic fitting of t ...

  • Toro 3550-D - page 72

    Reelmaster 3550−D Hydraulic System Page 4 − 40 T raction Circuit T esting − Piston Pump/Hydrostat Flow and Relief Pressure T est High Pressure Low Pressure Return or Suction Flow TO STEERING CONTROL V AL VE (P) PORT 3500 PSI 100−150 PSI G2 G1 C2 200−300 BYP ASS VA LV E SUCTION STRAINER P1 P2 TRACTION WHEEL MOTORS FRONT REAR FRONT PSI GEAR ...

  • Toro 3550-D - page 73

    Reelmaster 3550−D Hydraulic System Page 4 − 41 T raction Circuit T esting − Piston Pump/Hydrostat Flow and Relief Pressure T est: Th e hydrostat flow test is the third in a series of tests re- commended to determine traction circuit performance. Th e final traction circuit test is verifying the hydrostat re- lief valve operation. This test co ...

  • Toro 3550-D - page 74

    Reelmaster 3550−D Hydraulic System Page 4 − 42 NOTE: The relief valve setting is 3500 PSI (241 Bar). An additional 100 to 200 PSI (6.9 to 10.3 Bar) is necessary to overcome system charge pressure before the relief valve opens. E. Release traction pedal, open flow control valve fully , move throttle to low speed and turn the engine off. 14. If r ...

  • Toro 3550-D - page 75

    Reelmaster 3550−D Hydraulic System Page 4 − 43 This page is intentionally blank. Hydraulic System ...

  • Toro 3550-D - page 76

    Reelmaster 3550−D Hydraulic System Page 4 − 44 Cutting Unit Circuit T esting − Pressure T est High Pressure Low Pressure Return or Suction Flow BACKLAP SWITCH (SW) REEL #4 LC FC PRV MV T M1 P G M2 MOW CONTROL MANIFOLD CV1 1500 PSI M3 REEL #1 REEL #5 REEL #2 REEL #3 OR1 .050” OR2 .020” RV PRESSURE GAUGE TO OIL COOLER FROM GEAR PUMP (P1) TO ...

  • Toro 3550-D - page 77

    Reelmaster 3550−D Hydraulic System Page 4 − 45 Cutting Unit Circuit T esting − Pressure T est: Cutting unit circuit pressure is the first in a series of tests recommended to check cutting unit circuit performance. The results from this test will help determine which com- ponent(s) are the cause of cutting unit performance is- sues. Special Eq ...

  • Toro 3550-D - page 78

    Reelmaster 3550−D Hydraulic System Page 4 − 46 Cutting Unit Circuit T esting − Reel Motor Efficiency/Case Drain T est High Pressure Low Pressure Return or Suction Flow T oro # TOR4077 REEL #4 REEL #1 REEL #5 REEL #2 REEL #3 FROM MOW CONTROL MANIFOLD TO HYDRAULIC T ANK PORT (M1) TO MOW CONTROL MANIFOLD PORT (M2) TO MOW CONTROL MANIFOLD PORT (M ...

  • Toro 3550-D - page 79

    Reelmaster 3550−D Hydraulic System Page 4 − 47 Cutting Unit Circuit T esting − Reel Motor Efficiency/ Case Drain T est The reel motor efficiency/case drain test is the second in a series of tests recommended to check cutting unit circuit performance. Over a period of time, a reel motor can wear internally . This test measures case drain volum ...

  • Toro 3550-D - page 80

    Reelmaster 3550−D Hydraulic System Page 4 − 48 Cutting Unit Circuit T esting − Proportional Relief V alve (PRV) Pressure T est High Pressure Low Pressure Return or Suction Flow TESTER WITH PRESSURE GAUGE AND FLOW METER BACKLAP SWITCH (SW) REEL #4 LC FC PRV MV T M1 P G M2 MOW CONTROL MANIFOLD CV1 1500 PSI M3 REEL #1 REEL #5 REEL #2 REEL #3 OR1 ...

  • Toro 3550-D - page 81

    Reelmaster 3550−D Hydraulic System Page 4 − 49 Cutting Unit Circuit T esting − Proportional Relief V alve (PRV) Pressure T est: T est the performance of the mow control manifold pro- portional relief valve (PR V) to make sure that the maxim- um amount of fluid is available to the cutting unit motors up to the set relief pressure. This test al ...

  • Toro 3550-D - page 82

    Reelmaster 3550−D Hydraulic System Page 4 − 50 Cutting Unit Circuit T esting − Mow Control Manifold Relief V alve (RV) Pressure T est High Pressure Low Pressure Return or Suction Flow TESTER WITH PRESSURE GAUGE AND FLOW METER BACKLAP SWITCH (SW) REEL #4 LC FC PRV MV T M1 P G M2 MOW CONTROL MANIFOLD CV1 1500 PSI M3 REEL #1 REEL #5 REEL #2 REEL ...

  • Toro 3550-D - page 83

    Reelmaster 3550−D Hydraulic System Page 4 − 51 Cutting Unit Circuit T esting − Mow Control Manifold Relief V alve (RV) Pressure T est: If a rear cutting unit suddenly becomes obstructed dur- ing operation, mow control manifold relief valve (RV) protects the obstructed cutting unit from additional dam- age by diverting the oil flow from the fr ...

  • Toro 3550-D - page 84

    Reelmaster 3550−D Hydraulic System Page 4 − 52 Cutting Unit Circuit T esting − Gear Pump (P1) Flow T est High Pressure Low Pressure Return or Suction Flow TESTER WITH PRESSURE GAUGES AND FLOW METER TO STEERING CONTROL V AL VE (P) PORT SUCTION STRAINER P1 P2 GEAR PUMP TO MOW CONTROL MANIFOLD (P) PORT HYDROST A T 3500 PSI 100−150 PSI G2 G1 C2 ...

  • Toro 3550-D - page 85

    Reelmaster 3550−D Hydraulic System Page 4 − 53 Cutting Unit Circuit T esting − Gear Pump (P1) Flow T est: The gear pump (P1) flow test is the last in a series of tests recommended to determine cutting unit circuit per- formance. This test compares fluid flow at No Load with fluid flow Under Load. A drop in flow under load of more than 15% ind ...

  • Toro 3550-D - page 86

    Reelmaster 3550−D Hydraulic System Page 4 − 54 Steering/Lift Circuit T esting − Gear Pump (P2) Flow T est TESTER WITH PRESSURE GAUGES AND FLOW METER TO STEERING CONTROL V AL VE (P) PORT SUCTION STRAINER P1 P2 GEAR PUMP TO MOW CONTROL MANIFOLD (P) PORT HYDROST A T 3500 PSI 100−150 PSI G2 G1 C2 200−300 BYP ASS VA LV E PSI FROM LIFT CONTROL ...

  • Toro 3550-D - page 87

    Reelmaster 3550−D Hydraulic System Page 4 − 55 Steering/Lift Circuit T esting − Gear Pump (P2) Flow T est: Gear pump (P2) is designed to satisfy both steering cyl- inder and lift cylinder needs simultaneously (at full speed throttle). The Gear Pump (P2) Flow T est com- pares fluid flow at No Load with fluid flow Under Load. A drop in flow und ...

  • Toro 3550-D - page 88

    Reelmaster 3550−D Hydraulic System Page 4 − 56 13. Disconnect tester and reconnect hose to pump. NOTE: If necessary , circuit relief valve pressure test can be conducted with tester in the same location as for this test (see Steering/Lift Circuit − Relief V alve Pres- sure T est in this chapter). ...

  • Toro 3550-D - page 89

    Reelmaster 3550−D Hydraulic System Page 4 − 57 This page is intentionally blank. Hydraulic System ...

  • Toro 3550-D - page 90

    Reelmaster 3550−D Hydraulic System Page 4 − 58 Steering/Lift Circuit T esting − Relief V alve Pressure T est High Pressure Low Pressure Return or Suction Flow TEST GAUGE SUCTION STRAINER P1 P2 GEAR PUMP TO HYDROST A T MOW CONTROL MANIFOLD (P) PORT 1000 PSI P L E T R TO LIFT CONTROL MANIFOLD (P) PORT 100−150 PSI C2 200−300 PSI CHARGE RELIE ...

  • Toro 3550-D - page 91

    Reelmaster 3550−D Hydraulic System Page 4 − 59 Steering/Lift Circuit T esting − Relief V alve Pressure T est: The relief valve for the steering and lift circuits is integ- rated into the steering control valve. If both steering and lift operations perform poorly , perform the relief valve pressure test and gear pump (P2) flow test (see Steer- ...

  • Toro 3550-D - page 92

    Reelmaster 3550−D Hydraulic System Page 4 − 60 Steering/Lift Circuit T esting − Steering Control V alve and Steering Cylinder T est High Pressure Low Pressure Return or Suction Flow 1000 PSI P L E T R TO LIFT CONTROL MANIFOLD (P) PORT STEERING PLUG OPEN FITTING STEERING CONTROL VA LV E CYLINDER ...

  • Toro 3550-D - page 93

    Reelmaster 3550−D Hydraulic System Page 4 − 61 Steering/Lift Circuit T esting − Steering Control V alve and Steering Cylinder T est: Unit steering performance will be affected by incorrect rear tire pressure, binding in the hydraulic steering cylin- der , extra weight on the vehicle, and/or binding of the steering for k a s s e mbly . Make su ...

  • Toro 3550-D - page 94

    Reelmaster 3550−D Hydraulic System Page 4 − 62 Adjustments Adjust Control Manifold Relief V alves The hydraulic control manifolds on your Reelmaster in- clude adjustable relief valves (RV & R V1). Mow control manifold relief valve RV should be set to 1500 PSI (103 Bar) and lift control manifold relief valve RV1 should b e set to 500 PSI (34 ...

  • Toro 3550-D - page 95

    Reelmaster 3550−D Hydraulic System Page 4 − 63 Service and Repairs General Precautions for Removing and Installing Hydraulic System Components Before Repair or Replacement of Hydraulic Compo- nents 1. Before removing any parts from the hydraulic sys- tem, park machine on a level surface, engage parking brake, lower cutting units and stop engine ...

  • Toro 3550-D - page 96

    Reelmaster 3550−D Hydraulic System Page 4 − 64 Check Hydraulic Lines and Hoses W ARNING Keep body and hands away from pin hole leaks or nozzles that eject hydraulic fluid under high pressure. Use paper or cardboard, not hands, to search for leaks. Hydraulic fluid escaping under pressure can have sufficient force to penetrate the skin and cause ...

  • Toro 3550-D - page 97

    Reelmaster 3550−D Hydraulic System Page 4 − 65 Flush Hydraulic System IMPORT ANT : Flush the hydraulic system any time there is a severe component failure or if the system is contaminated (fluid appears milky , black, or con- tains metal particles). IMPORT ANT : Flush hydraulic system when chang- Ing from petroleum base hydraulic fluid to a bio ...

  • Toro 3550-D - page 98

    Reelmaster 3550−D Hydraulic System Page 4 − 66 Filtering Closed−Loop T raction Circuit Filtering of a closed−loop hydraulic system after a major component failure (e.g. traction (piston) pump or wheel motor) is a requirement to prevent debris from transmit- ting throughout the system. If a closed−loop hydraulic system filtering tool is no ...

  • Toro 3550-D - page 99

    Reelmaster 3550−D Hydraulic System Page 4 − 67 Charge Hydraulic System NOTE: When initially starting the hydraulic system with new or rebuilt components such as motors, pumps, or lift cylinders, it is important that the hydraulic system be charged properly . Air must be purged from the system and its components to reduce the chance of damage. I ...

  • Toro 3550-D - page 100

    Reelmaster 3550−D Hydraulic System Page 4 − 68 Hydraulic T ank 1. Hydraulic tank 2. Dipstick 3. T ank cap 4. Shoulder screw 5. O−ring 6. T ank strainer 7. Hose clamp (2) 8. Suction hose 9. O−ring 10. Elbow fitting 1 1. Hydraulic tube 12. O−ring 13. Elbow fitting 14. Hydraulic tube 15. Elbow fitting 16. Filter head 17. Filter element 18. G ...

  • Toro 3550-D - page 101

    Reelmaster 3550−D Hydraulic System Page 4 − 69 Hydraulic T ank Removal (Fig. 42) 1. Park machine on a level surface. Lower cutting units, stop engine and engage parking brake. Remove key from the ignition switch. 2. Read the General Precautions for Removing and Installing Hydraulic System Components at the begin- ning of this section of this ch ...

  • Toro 3550-D - page 102

    Reelmaster 3550−D Hydraulic System Page 4 − 70 Radiator and Oil Cooler Assembly Figure 43 1. Draincock valve 2. Flange head screw (8) 3. Flange nut (4) 4. Carriage bolt (4) 5. Radiator/oil cooler assembly 6. LH fan shroud 7. RH fan shroud 8. Flange head screw (4) 9. Hose clamp (2) 10. Flange head screw (6) 1 1. Overflow bottle bracket 12. Radia ...

  • Toro 3550-D - page 103

    Reelmaster 3550−D Hydraulic System Page 4 − 71 This page is intentionally blank. Hydraulic System ...

  • Toro 3550-D - page 104

    Reelmaster 3550−D Hydraulic System Page 4 − 72 Hydraulic Pump Assembly 1. Piston pump 2. Straight hydraulic fitting 3. Cap screw 4. Lock nut 5. 90 o hydraulic fitting 6. 90 o hydraulic fitting 7. T ee fitting 8. 90 o hydraulic fitting 9. 90 o hydraulic fitting 10. W asher 1 1. Hydraulic hose 12. Suction hose 13. Flange nut 14. Idler pivot pin 1 ...

  • Toro 3550-D - page 105

    Reelmaster 3550−D Hydraulic System Page 4 − 73 Drive Belt Removal (Fig. 44) 1. Park machine on a level surface. Lower cutting units, stop engine and engage parking brake. Remove key from the ignition switch. 2. Raise and support hood. CAUTION The torsion spring that tensions the idler as- sembly is under tension and may cause personal injury du ...

  • Toro 3550-D - page 106

    Reelmaster 3550−D Hydraulic System Page 4 − 74 Neutral Arm Assembly 1. Pump assembly 2. Hose 3. Extension spring 4. Pump mount plate 5. Neutral bracket 6. Flange nut 7. Flange head screw 8. Neutral arm 9. Flange bushing 10. Thrust washer 1 1. 90 o grease fitting 12. Lock nut 13. Spacer 14. T raction stud 15. T raction control cable 16. Flat was ...

  • Toro 3550-D - page 107

    Reelmaster 3550−D Hydraulic System Page 4 − 75 Neutral Arm Removal (Fig. 46) 1. Park machine on a level surface. Lower cutting units, stop engine and engage parking brake. Remove key from the ignition switch. 2. Raise and support hood. CAUTION The extension spring is under tension and may cause personal injury during removal. Use cau- tion when ...

  • Toro 3550-D - page 108

    Reelmaster 3550−D Hydraulic System Page 4 − 76 Piston Pump/Hydrostat Figure 47 1. Engine mount bracket 2. Flange nut 3. Flange screw 4. Pump mount plate 5. Hardened washer 6. 10 mm cap screw (4) 7. 8 mm cap screw (1) 8. Hardened washer 9. Long spacer (4) 10. Short spacer (1) 1 2 3 4 5 6 7 8 9 10 FRONT RIGHT Piston Pump/Hydrostat Removal (Fig. 4 ...

  • Toro 3550-D - page 109

    Reelmaster 3550−D Hydraulic System Page 4 − 77 7. Label all hydraulic hoses and fittings for assembly purposes. 8. Disconnect all hydraulic hoses connected to the hy- draulic fittings on the piston pump/hydrostat and gear pump. Allow hoses to drain into a suitable container . Plug hose and fitting openings to prevent contamina- tion. CAUTION Su ...

  • Toro 3550-D - page 110

    Reelmaster 3550−D Hydraulic System Page 4 − 78 4. Place key into piston pump shaft slot. Slide taper lock bushing onto the piston pump shaft with bushing flange toward pump housing. 5. Make sure that tapered surfaces of pump pulley and taper lock bushing are thoroughly clean (no oil, grease, dirt, rust, etc.). 6. Position pump pulley to taper l ...

  • Toro 3550-D - page 111

    Reelmaster 3550−D Hydraulic System Page 4 − 79 This page is intentionally blank. Hydraulic System ...

  • Toro 3550-D - page 112

    Reelmaster 3550−D Hydraulic System Page 4 − 80 Piston Pump/Hydrostat Service 1. Key 2. Drive shaft 3. Bearing 4. Cap screw (3 used per plate) 5. Cover plate 6. O–ring 7. Shim kit 8. Bearing cone 9. Key 10. Swashplate 1 1. Rotating kit 12. Gasket 13. V alve plate 14. Bearing 15. Dowel pin 16. Back plate 17. O–ring 18. Plug 19. Relief valve a ...

  • Toro 3550-D - page 113

    Reelmaster 3550−D Hydraulic System Page 4 − 81 IMPORT ANT : If a piston pump failure occurred, re- fer to T raction Circuit (Closed Loop) Component Failure in this chapter for information regarding the importance of removing contamination from the traction circuit. NOTE: The traction circuit charge relief valve and the bleed o f f valve for tra ...

  • Toro 3550-D - page 114

    Reelmaster 3550−D Hydraulic System Page 4 − 82 1. Crush ring 2. Shims 3. Cover plate 4. Housing 5. Camplate (control shaft) 6. Bearing cone 7. Bearing cup 8. O−ring 9. W asher (3) 10. Cap screw (3) Figure 51 v 29 ft−lb (39 N−m) 6 4 5 8 7 2 3 9 10 1 Piston Pump/Hydrostat Crush Ring Replacement (Fig. 51) NOTE: The shims replace the crush ri ...

  • Toro 3550-D - page 115

    Reelmaster 3550−D Hydraulic System Page 4 − 83 Gear Pump 1. Piston pump 2. Gear pump 3. Hydraulic hose (tank suction) 4. Hydraulic hose (hydraulic manifold) 5. Hydraulic hose (steering valve) 6. Hose clamp 7. Hydraulic barb fitting 8. O–ring 9. O–ring 10. 90 o hydraulic fitting 1 1. O–ring 12. O–ring 13. 90 o hydraulic fitting 14. O–r ...

  • Toro 3550-D - page 116

    Reelmaster 3550−D Hydraulic System Page 4 − 84 Installation (Fig. 52) 1. If fittings were removed from gear pump, lubricate and place new O−rings onto fittings. Install fittings into pump openings using marks made during the removal process to properly orientate fittings. T ighten fittings (see Hydraulic Fitting Installation in the General In ...

  • Toro 3550-D - page 117

    Reelmaster 3550−D Hydraulic System Page 4 − 85 This page is intentionally blank. Hydraulic System ...

  • Toro 3550-D - page 118

    Reelmaster 3550−D Hydraulic System Page 4 − 86 Gear Pump Service 1. Front cover 2. Pressure seal 3. Back−up gasket 4. Front thrust plate 5. Idler gear 6. Drive shaft 7. Rear thrust plate 8. Dowel pin 9. Seal 10. Body 1 1. Seal 12. Splined connecting shaft 13. Pressure seal 14. Back−up gasket 15. Front thrust plate 16. Idler gear 17. Drive g ...

  • Toro 3550-D - page 119

    Reelmaster 3550−D Hydraulic System Page 4 − 87 IMPORT ANT : Use caution when clamping gear pump i n a vise to avoid distorting any pump compo- nents. 3. Secure the front cover of the pump in a vise with the drive shaft pointing down. 4. Loosen the four (4) cap screws that secure pump a s - sembly . 5. Remove pump from vise and remove fasteners. ...

  • Toro 3550-D - page 120

    Reelmaster 3550−D Hydraulic System Page 4 − 88 Front Wheel Motors 1. Lock nut 2. Spacer 3. Socket head screw 4. Hydraulic wheel motor 5. Frame 6. Hydraulic tube 7. Hydraulic tube 8. O–ring 9. Hydraulic fitting 10. O–ring 1 1. Brake bracket Figure 56 FRONT RIGHT 5 1 6 8 9 10 7 8 9 4 2 11 10 3 NOTE: The left front wheel motor has a yellow dot ...

  • Toro 3550-D - page 121

    Reelmaster 3550−D Hydraulic System Page 4 − 89 Removal (Fig. 56) 1. Park machine on a level surface. Lower cutting units, stop engine and engage parking brake. Remove key from the ignition switch. W ARNING Before jacking up the machine, review and follow Jacking Instructions in Chapter 1 − Safety . 2. Jack u p front of machine enough to allow ...

  • Toro 3550-D - page 122

    Reelmaster 3550−D Hydraulic System Page 4 − 90 Rear Wheel Motor 1. Lug nuts (4) 2. Rear wheel assembly 3. Lock nut 4. Wheel hub 5. Wheel stud (4) 6. Lock nut (4) 7. Rear wheel motor 8. Socket head screw (4) 9. Rear fork 10. Woodruff key 1 1. O−ring (2) 12. Elbow fitting (2) 13. O−ring (2) 14. Hydraulic hose 15. Hydraulic hose Figure 57 2 8 ...

  • Toro 3550-D - page 123

    Reelmaster 3550−D Hydraulic System Page 4 − 91 Removal (Fig. 57) 1. Park machine on a level surface. Lower cutting units, stop engine and engage parking brake. Remove key from the ignition switch. W ARNING Before jacking up the machine, review and follow Jacking Instructions in Chapter 1 − Safety . 2. Jack up rear of equipment enough to allow ...

  • Toro 3550-D - page 124

    Reelmaster 3550−D Hydraulic System Page 4 − 92 Wheel Motor Service 1. Dirt seal 2. Bearing 3. Housing 4. Back−up washer 5. Seal ring 6. Back−up washer 7. Inner seal 8. Thrust washer 9. Thrust bearing 10. Bearing 1 1. Coupling shaft 12. Thrust bearing 13. Drive link 14. Cap screw 15. Commutator seal 16. Commutator 17. Woodruff key 18. Wear p ...

  • Toro 3550-D - page 125

    Reelmaster 3550−D Hydraulic System Page 4 − 93 This page is intentionally blank. Hydraulic System ...

  • Toro 3550-D - page 126

    Reelmaster 3550−D Hydraulic System Page 4 − 94 Cutting Unit Reel Motor 1. O−ring 2. Elbow fitting 3. Straight fitting 4. O−ring 5. Hydraulic hose (Inlet) 6. Hydraulic hose (return) 7. O−ring 8. Straight fitting 9. Elbow fitting 10. O−ring 1 1. Hydraulic hose (case drain) Figure 59 FRONT RIGHT 10 4 2 #1 #5 #3 #2 #4 1 1 1 1 1 1 2 2 2 2 4 ...

  • Toro 3550-D - page 127

    Reelmaster 3550−D Hydraulic System Page 4 − 95 Removal 1. Park the machine on a level surface, engage parking brake, lower cutting units and stop engine. Remove key from the ignition switch. 2. Read the General Precautions for Removing and Installing Hydraulic System Components in this chapter . 3. Label all hydraulic connections for assembly p ...

  • Toro 3550-D - page 128

    Reelmaster 3550−D Hydraulic System Page 4 − 96 Cutting Unit Reel Motor Service 1. Dust seal 2. Retaining ring 3. Backup washer 4. Shaft seal 5. Front flange 6. Dowel pin (2) 7. O–ring 8. Pressure seal (outer) 9. Backup gasket (outer) 10. Wear plate (outer) 1 1. Drive gear 12. Idler gear 13. Wear plate (inner) 14. Backup gasket (inner) 15. Pre ...

  • Toro 3550-D - page 129

    Reelmaster 3550−D Hydraulic System Page 4 − 97 IMPORT ANT : Note position of the open and closed side of the wear plates before removing. Identify wear plates (inner and outer , drive gear and idler gear) with a marker for proper assembly . IMPORT ANT : Mark the relative positions of the gear teeth so they can be reassembled in the same (mated) ...

  • Toro 3550-D - page 130

    Reelmaster 3550−D Hydraulic System Page 4 − 98 Assembly (Fig. 61) 1. Lubricate O–rings, pressure seals, back−up gaskets an d wear plate grooves with a thin coat of petroleum jel- ly . Lubricate all other internal parts freely with clean hy- draulic fluid. 2. Install new seals into front flange (Fig. 63): A. Press new shaft seal into front f ...

  • Toro 3550-D - page 131

    Reelmaster 3550−D Hydraulic System Page 4 − 99 This page is intentionally blank. Hydraulic System ...

  • Toro 3550-D - page 132

    Reelmaster 3550−D Hydraulic System Page 4 − 100 Mow Control Manifold 1. Mow control manifold 2. Hydraulic tube 3. Hydraulic tube 4. Hydraulic tube 5. Hydraulic hose 6. Hydraulic tube 7. Hydraulic tube 8. Straight hydraulic fitting (3) 9. O−ring 10. O−ring 1 1. 90 o hydraulic fitting 12. O−ring 13. O−ring 14. Hydraulic tee fitting 15. O? ...

  • Toro 3550-D - page 133

    Reelmaster 3550−D Hydraulic System Page 4 − 101 Removal (Fig. 65) The ports on the mow control manifold are marked for easy identification of components. Example: PRV i s t h e proportional relief valve and P is the supply port (see Hy- draulic Schematic to identify the function of the hydraulic lines and cartridge valves at each port location) ...

  • Toro 3550-D - page 134

    Reelmaster 3550−D Hydraulic System Page 4 − 102 Mow Control Manifold Service 1. Mow control manifold 2. Coil nut 3. SAE #4 plug with O−ring (17) 4. SAE #6 plug with O−ring (4) 5. Orifice plug (0.020) (port OR2) 6. Orifice (0.050) (port OR1) 7. Zero leak #4 plug with O−ring 8. Spring pin (2) 9. Check valve (CV port) 10. Logic spool cartrid ...

  • Toro 3550-D - page 135

    Reelmaster 3550−D Hydraulic System Page 4 − 103 NOTE: The ports on the mow control manifold are marked for easy identification of components. Example: PRV is the proportional relief valve and T is the return port (see Hydraulic Schematic to identify the function of the hydraulic lines and cartridge valves at each port location). NOTE: The hydra ...

  • Toro 3550-D - page 136

    Reelmaster 3550−D Hydraulic System Page 4 − 104 1. Mow control manifold 2. Ball switch (normally open) 3. O−ring 4. Ball 5. Backlap spool 6. Retaining ring (lower) 7. Retaining ring (upper) 8. Back−up ring 9. O−ring 10. O−ring (2) 1 1. Back−up ring 12. Spool handle Figure 68 FRONT VIEW FROM BELOW FRONT VIEW FROM ABOVE 20 ft−lb (27 N ...

  • Toro 3550-D - page 137

    Reelmaster 3550−D Hydraulic System Page 4 − 105 Backlap Spool (Fig. 68) 1. T o remove backlap spool from manifold: A. Remove backlap switch from manifold before re - moving backlap spool. Remove ball from manifold port after switch is removed. Remove and discard O−ring from switch. B. Remove lower retaining ring from backlap spool. Raise back ...

  • Toro 3550-D - page 138

    Reelmaster 3550−D Hydraulic System Page 4 − 106 Lift Control Manifold 1. Mow control manifold 2. Flange head screw (2 used) 3. Hydraulic hose 4. Hydraulic hose 5. Hydraulic tube (to rear bulkhead) 6. Hydraulic tube (to rear bulkhead) 7. Hydraulic hose (RH lift cylinder) 8. Hydraulic hose (RH lift cylinder) 9. Hydraulic hose (center lift cylinde ...

  • Toro 3550-D - page 139

    Reelmaster 3550−D Hydraulic System Page 4 − 107 Removal (Fig. 69) Th e ports on the lift control manifold are marked for easy identification of components. Example: S1 is the sole- noid valve and P is the supply port (see Hydraulic Sche- matic to identify the function of the hydraulic lines and cartridge valves at each port location). Th e lift ...

  • Toro 3550-D - page 140

    Reelmaster 3550−D Hydraulic System Page 4 − 108 Lift Control Manifold Service 1. Lift control manifold 2. Dust cover 3. SAE #4 plug with O−ring (2) 4. Relief valve (RV1) 5. Solenoid valve (S1) 6. Solenoid valve (S2) 7. Solenoid valve (S3 and S4) 8. Solenoid coil (4) 9. Coil spacer (2) 10. Orifice (0.035) (port C7) 1 1. Orifice (0.055) (port C ...

  • Toro 3550-D - page 141

    Reelmaster 3550−D Hydraulic System Page 4 − 109 NOTE: Th e ports on the lift control manifold are marked for easy identification of components. Example: S1 is th e solenoid valve and P is the supply port (see Hydrau- lic Schematic to identify the function of the hydraulic lines and cartridge valves at each port location). CAUTION Before continu ...

  • Toro 3550-D - page 142

    Reelmaster 3550−D Hydraulic System Page 4 − 1 10 Control Manifold Cartridge V alve Service 1. Make sure the control manifold is clean before re- moving the cartridge valve from the control manifold. 2. If cartridge valve is solenoid operated, remove nut securing solenoid coil to the cartridge valve. Carefully slide coil off the valve. IMPORT AN ...

  • Toro 3550-D - page 143

    Reelmaster 3550−D Hydraulic System Page 4 − 1 1 1 This page is intentionally blank. Hydraulic System ...

  • Toro 3550-D - page 144

    Reelmaster 3550−D Hydraulic System Page 4 − 1 12 Steering Control V alve 1. Steering arm 2. Flange nut (4) 3. Flange head screw (4) 4. Steering valve bracket 5. Cap screw (2) 6. Pivot hub (2) 7. Steering valve cover 8. Washer head screw (5) 9. Tilt steering boss 10. Ball knob 1 1. Steering tilt lever 12. Steering control valve 13. Tilt bracket ...

  • Toro 3550-D - page 145

    Reelmaster 3550−D Hydraulic System Page 4 − 1 13 Removal (Fig. 71) 1. Park machine on a level surface. Lower cutting units, stop engine and engage parking brake. Remove key from the ignition switch. 2. Thoroughly clean hydraulic hose ends and fittings o n steering control valve to prevent hydraulic system con- tamination. W ARNING Before discon ...

  • Toro 3550-D - page 146

    Reelmaster 3550−D Hydraulic System Page 4 − 1 14 Steering Control V alve Service 1. Sleeve 2. Cross pin 3. Ring 4. Spool 5. Bearing assembly 6. Shaft seal 7. Ball stop 8. Ball 9. Dust seal ring 10. Housing 1 1. Cardan shaft 12. Spacer 13. O–ring 14. Distribution plate 15. Inner gearwheel 16. Outer gearwheel 17. End cover 18. O–ring (5 used) ...

  • Toro 3550-D - page 147

    Reelmaster 3550−D Hydraulic System Page 4 − 1 15 This page is intentionally blank. Hydraulic System ...

  • Toro 3550-D - page 148

    Reelmaster 3550−D Hydraulic System Page 4 − 1 16 Steering Cylinder Figure 75 FRONT RIGHT 1. Hydraulic hose 2. Hydraulic hose 3. O−ring (2) 4. Hydraulic fitting (2) 5. O−ring (2) 6. Steering cylinder 7. Ball joint 8. Retaining ring 9. Jam nut (4) 10. Frame 1 1. Rear fork 12. Rear casting 8 9 12 11 9 1 8 7 2 3 4 5 6 7 10 No. 2 General Purpose ...

  • Toro 3550-D - page 149

    Reelmaster 3550−D Hydraulic System Page 4 − 1 17 Removal (Fig. 75) 1. Park machine on a level surface. Lower cutting units, stop engine and engage parking brake. Remove key from the ignition switch. NOTE: Th e rear tire must be removed to allow suf ficient clearance to remove the steering cylinder from the ma- chine. W ARNING Before jacking up ...

  • Toro 3550-D - page 150

    Reelmaster 3550−D Hydraulic System Page 4 − 1 18 Steering Cylinder Service 1. Barrel with clevis 2. Lock nut 3. Piston seal 4. Piston 5. O−ring 6. O−ring 7. Back−up ring 8. Head 9. Head seal 10. Dust seal 1 1. Internal collar 12. Rod Figure 76 40 ft−lb (54 N−m) 2 3 4 5 8 9 10 11 1 6 7 12 23 4 5 89 10 11 1 6 7 12 ...

  • Toro 3550-D - page 151

    Reelmaster 3550−D Hydraulic System Page 4 − 1 19 Disassembly (Fig. 76) 1. Remove oil from the steering cylinder into a drain pan by slowly pumping the cylinder rod. Plug both ports and clean the outside of the cylinder . IMPORT ANT : Prevent damage when clamping the steering cylinder into a vise; clamp on the clevis ONL Y . 2. Mount barrel end ...

  • Toro 3550-D - page 152

    Reelmaster 3550−D Hydraulic System Page 4 − 120 Front Lift Cylinders 1. #1 lift arm 2. #5 lift arm 3. #4 lift arm 4. Recessed bumper (3) 5. Flange head screws (3) 6. Cylinder pin (2) 7. Pivot pin (2) 8. Washer head screw (2) 9. Lift cylinder 10. Thrust washer 1 1. Lynch pin 12. Cylinder pin 13. Thrust washer (6) 14. Retaining ring (6) 15. Lift ...

  • Toro 3550-D - page 153

    Reelmaster 3550−D Hydraulic System Page 4 − 121 Removal (Fig. 77) 1. Park machine on a level surface. Lower cutting units, stop engine and engage parking brake. Remove key from the ignition switch. 2. Read the General Precautions for Removing and Installing Hydraulic System Components in this chapter . 3. T o prevent contamination of hydraulic ...

  • Toro 3550-D - page 154

    Reelmaster 3550−D Hydraulic System Page 4 − 122 Rear Lift Cylinders 1. #2 lift arm 2. #3 lift arm 3. Pin (2) 4. Washer head screw (4) 5. Rear lift cylinder (2) 6. Pin (2) 7. Cylinder pin (2) 8. Thrust washer (4) 9. Retaining ring (4) 10. Grease fitting (2) 1 1. RH torsion spring 12. LH torsion spring 13. O−ring (4) 14. Straight fitting (4) 15 ...

  • Toro 3550-D - page 155

    Reelmaster 3550 - D Hydraulic System Page 4 - 123 Removal (Fig. 78) 1. Park machine on a level sur face. Lower cutting unit s, stop engine and enga ge parking brake. Remove key from the ignition s witch. 2. Read the General Precautio ns for Removing and Installing Hydraulic System Components in this chapter . 3. T o prevent cont amination of hydrau ...

  • Toro 3550-D - page 156

    Reelmaster 3550−D Hydraulic System Page 4 − 124 Lift Cylinder Service 1. Barrel 2. Lock nut 3. Wear ring 4. Piston 5. Seal 6. O−ring 7. Head 8. O−ring 9. Back−up ring 10. Seal 1 1. Dust seal 12. Retaining ring 13. Rod (cutting units #1, #2 and #3) 14. Rod (cutting units #4 and #5) Figure 79 2 3 6 8 9 10 11 13 1 5 7 12 4 2 3 6 89 10 11 13 ...

  • Toro 3550-D - page 157

    Reelmaster 3550−D Hydraulic System Page 4 − 125 Disassembly (Fig. 79) 1. Remove oil from the lift cylinder into a drain pan by slowly pumping the cylinder rod. Plug both ports and clean the outside of the cylinder . IMPORT ANT : Prevent damage when clamping the cylinder in a vise; clamp on the clevis only . 2. Mount lift cylinder securely in a ...

  • Toro 3550-D - page 158

    Reelmaster 3550−D Hydraulic System Page 4 − 126 This page is intentionally blank. ...

  • Toro 3550-D - page 159

    Reelmaster 3550−D Page 5 − 1 Electrical System Chapter 5 Electrical System T able of Contents GENERAL INFORMA TION 2 ..................... Operator ’s Manual 2 .......................... T oro Electronic Controllers (TEC) 2 ............. CAN−bus Communications 2 ................... ELECTRICAL SCHEMA TIC 3 .................... SPECIAL TOOLS ...

  • Toro 3550-D - page 160

    Reelmaster 3550−D Page 5 − 2 Electrical System General Information Operator ’ s Manual The Operator ’s Manual provides information regarding the operation, general maintenance and maintenance intervals for your Reelmaster machine. Refer to the Op- erator ’s Manual for additional information when servic- ing the machine. T oro Electronic C ...

  • Toro 3550-D - page 161

    Reelmaster 3550−D Page 5 − 3 Electrical System Electrical Schematic The electrical schematic and wiring diagrams for the Re- elmaster 3550−D are located in Chapter 9 − Foldout Drawings in this manual. Electrical System ...

  • Toro 3550-D - page 162

    Reelmaster 3550−D Page 5 − 4 Electrical System Special T ools Order special tools from your T oro distributor . Some tools may also be available from a local supplier . Multimeter The multimeter can test electrical components and cir- cuits for current (amps), resistance (ohms) or voltage. Obtain this tool locally . NOTE: T oro recommends the u ...

  • Toro 3550-D - page 163

    Reelmaster 3550−D Page 5 − 5 Electrical System T erminal Protector Aerosol spray that should be used on battery terminals, ring terminals, and fork terminals to reduce corrosion problems. Apply battery terminal protector to the con- nection after the battery cable, ring terminal, or fork ter- minal has been secured. T oro Part Number: 107−039 ...

  • Toro 3550-D - page 164

    Reelmaster 3550−D Page 5 − 6 Electrical System T roubleshooting CAUTION Remove all jewelry , especially rings and watches, before doing any electrical trouble- shooting or testing. Disconnect the battery cables unless the test requires battery voltage. For ef fective troubleshooting and repairs, there must be a good understanding of the electri ...

  • Toro 3550-D - page 165

    Reelmaster 3550−D Page 5 − 7 Electrical System Retrieving Fault Codes All machine fault codes are retained in the TEC control- ler memory . The three (3) most recent fault codes that have occurred within the last forty (40) hours of opera- tion can be retrieved using the diagnostic light. T o re- trieve these fault codes from the controller mem ...

  • Toro 3550-D - page 166

    Reelmaster 3550−D Page 5 − 8 Electrical System Clearing Fault Codes After fault codes have been retrieved, clearing of those faults can be completed using the following switch se- quence: 1. Place machine switches in fault retrieval (see Re- trieving Fault Codes in this chapter). The diagnostic light should be displaying the fault codes. 2. Ope ...

  • Toro 3550-D - page 167

    Reelmaster 3550−D Page 5 − 9 Electrical System Diagnostic Display Reelmaster 3550−D machines are equipped with a T or o Electronic Controller (TEC) which controls machine electrical functions. The controller monitors various in- put switches (e.g. ignition switch, seat switch, neutral switch) and energizes outputs to actuate solenoids or rela ...

  • Toro 3550-D - page 168

    Reelmaster 3550−D Page 5 − 10 Electrical System 4. T urn the ignition switch to the ON position, but do not start machine. NOTE: The red text on the Diagnostic Display overlay decal refers to TEC inputs and the green text refers to TEC outputs. 5. Th e “inputs displayed ” LED, on lower right column of the Diagnostic Display , should be illu ...

  • Toro 3550-D - page 169

    Reelmaster 3550−D Page 5 − 1 1 Electrical System V erify Diagnostic Display Output Functions The Diagnostic Display also has the ability to detect which outputs (solenoids, relays and indicator lights) are energized by the TEC controller . This is a quick way to determine if a machine malfunction is electrical or hy- draulic. NOTE: An open outp ...

  • Toro 3550-D - page 170

    Reelmaster 3550−D Page 5 − 12 Electrical System Output No. Output Name Input Conditions Required to Illuminate Output LED 1 ST ART Key Switch − ST ART T raction Pedal − NEUTRAL Seat Switch − OCCUPIED or Parking Brake − ENGAGED Reel Enable/Disable Switch − DISABLE Joystick − NEUTRAL 2 ETR Key Switch − RUN or ST ART T raction Pedal ...

  • Toro 3550-D - page 171

    Reelmaster 3550−D Page 5 − 13 Electrical System 6. T he automatic cutting unit Lower Sequence or Raise Sequence (programed into the TEC controller) ener- gizes and de−energizes outputs 5 thru 10 in a predeter- mined order . Operation of the program sequence can be checked using the diagnostic display by meeting the in- pu t conditions require ...

  • Toro 3550-D - page 172

    Reelmaster 3550−D Page 5 − 14 Electrical System Starting Problems Problem Possible Causes Nothing happens when start attempt is made. NOTE: If high engine coolant temperature (above 240 ° F (1 16 ° C)) causes the engine to stop, the engine can be restarted for ten (10) seconds to allow the machine to be moved. After ten seconds in this condit ...

  • Toro 3550-D - page 173

    Reelmaster 3550−D Page 5 − 15 Electrical System Starting Problems (continued) Problem Possible Causes The engine cranks, but does not start. The fuel tank is empty . Wiring in the engine crank circuit is loose, corroded or damaged (see electrical schematic in Chapter 9 − Foldout Drawings in this manual). The fuel filter is plugged. The engine ...

  • Toro 3550-D - page 174

    Reelmaster 3550−D Page 5 − 16 Electrical System General Run and T ransport Problems Problem Possible Causes Engine stops during operation (operator sitting on seat). Operator not in center of seat (seat switch is not depressed). Fuel tank is empty . Machine is being operated on a slope with a low fuel level. The parking brake was engaged or the ...

  • Toro 3550-D - page 175

    Reelmaster 3550−D Page 5 − 17 Electrical System Cutting Unit Operating Problems Problem Possible Causes Cutting units run (but should not) when raised. The mow control manifold proportional relief valve (PRV) solenoid coil or circuit wiring is faulty . A hydraulic problem exists (see Chapter 5 − Hydraulic System in this manual). The TEC Contr ...

  • Toro 3550-D - page 176

    Reelmaster 3550−D Page 5 − 18 Electrical System Electrical System Quick Checks Battery T est (Open Circuit T est) Use a multimeter to measure the voltage between the battery terminals. Set multimeter to the DC volts setting. The battery should b e at a temperature of 60 ° to 100 ° F (16 ° to 38 ° C). Th e ignition key should be off and all ...

  • Toro 3550-D - page 177

    Reelmaster 3550−D Page 5 − 19 Electrical System Check Operation of Interlock Switches CAUTION Do not disconnect safety switches. They are for th e operator ’s protection. Check the operation of the interlock switches daily for proper operation. Replace any malfunctioning switches before op- erating the machine. Interlock switch operation is d ...

  • Toro 3550-D - page 178

    Reelmaster 3550−D Page 5 − 20 Electrical System Component T esting For accurate resistance and/or continuity checks, elec- trically disconnect the component being tested from the circuit (e.g. unplug the ignition switch connector before checking continuity on the switch terminals). NOTE: For engine component testing information (starter solenoi ...

  • Toro 3550-D - page 179

    Reelmaster 3550−D Page 5 − 21 Electrical System Main Power Relay Th e main power relay is secured to the control panel as- sembly next to the operator seat (Fig. 15). This relay is attached t o the wire harness with a four (4) wire connec- to r (Fig. 1 6). The relay can be accessed by removing the control panel cover . The main power relay is u ...

  • Toro 3550-D - page 180

    Reelmaster 3550−D Page 5 − 22 Electrical System Fuses Th e fuse blocks are located under the control panel cov- er on the right side of the machine. Fuse Identification and Function Use the fuse decal (Fig.17) and fuse block (Fig. 18) to identify each individual fuse and its correct amperage. The fuses have the following function: Upper , rear ...

  • Toro 3550-D - page 181

    Reelmaster 3550−D Page 5 − 23 Electrical System Fusible Links The Reelmaster 3550−D uses four (4) fusible links for circuit protection. Three (3) of the fusible links are lo- cated in a single harness that connects the starter B+ terminal to the m ain wire harness (Fig. 19). The fusible links in this harness protect the glow plug, alternator ...

  • Toro 3550-D - page 182

    Reelmaster 3550−D Page 5 − 24 Electrical System T oro Electronic Controller (TEC) Th e Reelmaster 3550−D uses a T oro Electronic Control- ler (TEC) to monitor the condition of various switches (inputs) and directs power to a variety or outputs to con- trol certain machine functions. The controller is located under the control panel (Fig. 22). ...

  • Toro 3550-D - page 183

    Reelmaster 3550−D Page 5 − 25 Electrical System Figure 24 12V POWER (7.5A FUSES) 12V LOGIC IGNITION SWITCH INPUTS DIGIT AL INPUTS (OPEN/ ANALOG INPUTS POWER (2 AMP FUSE) COMM PORT CAN BUS CLOSED) OUTPUTS (PWR 2) GROUND (V ARIABLE) OUTPUTS (PWR 3) OUTPUTS (PWR 4) VOL TAGE OUT Electrical System ...

  • Toro 3550-D - page 184

    Reelmaster 3550−D Page 5 − 26 Electrical System Parking Brake Switch The parking brake switch is a normally closed proximity switch that is located on the control console (Fig. 25). The sensing plate that opens the switch is the parking brake lever . When the parking brake is applied, the parking brake lever is positioned near the target end of ...

  • Toro 3550-D - page 185

    Reelmaster 3550−D Page 5 − 27 Electrical System Neutral Switch The neutral switch is a normally open proximity switch that closes when the traction pedal is in the neutral posi- tion. The neutral switch is located under the floor plate (Fig. 26). The TEC controller monitors the position of the neutral switch (open or closed). Using inputs from ...

  • Toro 3550-D - page 186

    Reelmaster 3550−D Page 5 − 28 Electrical System Lower/Raise Joystick Switches The cutting unit raise and lower switches are located on th e joystick assembly that is attached to the control pan- el. The rear switch is used to lower the cutting units and th e front switch to raise them (Fig. 27 ). The switches are identical (Fig. 28). The TEC co ...

  • Toro 3550-D - page 187

    Reelmaster 3550−D Page 5 − 29 Electrical System Reel Enable/Disable Switch The enable/disable switch is located on the control panel (Fig. 29). This switch is pulled out to engage the cutting units and pushed in to disengage the cutting units. The TEC controller monitors the position of the enable/ disable switch (pulled out or pushed in). Usin ...

  • Toro 3550-D - page 188

    Reelmaster 3550−D Page 5 − 30 Electrical System Mow/T ransport Switch The switch used for the mow/transport slide is a nor- mally closed switch. The switch opens when the mow/ transport slid e is in the transport position. The switch is located under the floor plate (Fig 32). The TEC controller monitors the position of the mow/ transport switch ...

  • Toro 3550-D - page 189

    Reelmaster 3550−D Page 5 − 31 Electrical System Seat Switch The seat switch is normally open and closes when the operator seat is occupied. The seat switch is located dir- ectly under the seat. The TEC controller monitors the position of the seat switch (open or closed). Using inputs from the seat switch and other switches in the interlock syst ...

  • Toro 3550-D - page 190

    Reelmaster 3550−D Page 5 − 32 Electrical System Backlap Switch Th e backlap switch is a normally open ball switch that is in the normal, open state when the backlap lever is in the mow position. When the backlap lever is in the backlap position, the switch closes. The backlap switch is at- tached to the hydraulic mow control manifold located on ...

  • Toro 3550-D - page 191

    Reelmaster 3550−D Page 5 − 33 Electrical System Engine T emperature Sender The engine temperature sender is located above the al - ternator , in the thermostat housing (Fig. 35). The resist- ance of the temperature sender reduces as the engine coolant temperature increases. The TEC controller uses input from the temperature sender to control th ...

  • Toro 3550-D - page 192

    Reelmaster 3550−D Page 5 − 34 Electrical System 6. Replace temperature sender if specifications are not met. 7. Install temperature sender to the thermostat hous- ing. A. Clean threads of water flange and temperature sender thoroughly . Apply thread sealant to the threads of the sender . B. Screw sender into the water flange until it is finger ...

  • Toro 3550-D - page 193

    Reelmaster 3550−D Page 5 − 35 Electrical System Start Relay The start relay is secured to the control panel assembly next to the operator seat (Fig. 37). This relay is attached to the wire harness with a five (5) wire connector (Fig. 38). The relay can be accessed by removing the control panel cover . The start relay is used to provide current ...

  • Toro 3550-D - page 194

    Reelmaster 3550−D Page 5 − 36 Electrical System NOTE: Prior to taking small resistance readings with a digital multimeter , sho rt th e meter test leads to- gether . The meter will display a small resistance val- ue (usually 0.5 ohms or less). This resistance is due to the internal resistance of the meter and test leads. Subtract this value fro ...

  • Toro 3550-D - page 195

    Reelmaster 3550−D Page 5 − 37 Electrical System Fuel Stop Solenoid The fuel stop solenoid must be energized for the diesel engine to run. The solenoid is mounted to the injection pump on the engine (Fig. 39). The fuel stop solenoid includes two coils for operation: the pull coil and the hold coil. The TEC controller ener- gizes and monitors the ...

  • Toro 3550-D - page 196

    Reelmaster 3550−D Page 5 − 38 Electrical System Fuel Pump The fuel pump is attached to the left side of the engine near the fuel/water separator (Fig. 41). The TEC controller energizes and monitors the opera- tion of the fuel pump when specific input conditions are met. The fuel pump is energized when the ignition switch is set to RUN or ST ART ...

  • Toro 3550-D - page 197

    Reelmaster 3550−D Page 5 − 39 Electrical System Glow Relay The glow relay is secured to the control panel assembly next to the operator seat (Fig. 42). This relay is attached to the wire harness with a four (4) wire connector (Fig. 43). The relay can be accessed by removing the control panel cover . The glow relay is used to provide current to ...

  • Toro 3550-D - page 198

    Reelmaster 3550−D Page 5 − 40 Electrical System NOTE: Prior to taking small resistance readings with a digital multimeter , sho rt th e meter test leads to- gether . The meter will display a small resistance val- ue (usually 0.5 ohms or less). This resistance is due to the internal resistance of the meter and test leads. Subtract this value fro ...

  • Toro 3550-D - page 199

    Reelmaster 3550−D Page 5 − 41 Electrical System Hydraulic Solenoid V alve Coils The Reelmaster 3550−D hydraulic control manifolds use several hydraulic solenoid valve coils for system control. The lift manifold includes four (4) solenoid valves (S1, S2, S3, and S4). The mow manifold includes a single solenoid valve (PRV). The TEC controller e ...

  • Toro 3550-D - page 200

    Reelmaster 3550−D Page 5 − 42 Electrical System C. Solenoid coil resistance should be measured with solenoid at approximately 68 ° F (20 ° C). Resist- ance may be slightly dif ferent than listed at dif ferent temperatures. T ypically , a failed solenoid coil will ei- ther be shorted (very low or no resistance) or open (infinite resistance). U ...

  • Toro 3550-D - page 201

    Reelmaster 3550−D Page 5 − 43 Electrical System Indicator Lights 1. Diagnostic light 2. Glow plug indicator 3. High temp warning 4. Engine oil pressure 5. Charge indicator Figure 46 5 2 3 4 1 Diagnostic Light When the ignition switch is moved to the RUN position and the machine electrical system is functioning pro- perly , the diagnostic light ...

  • Toro 3550-D - page 202

    Reelmaster 3550 - D Page 5 - 44 Electric al System CAN - bus T ermination Resistors System communication be tween electrical comp onents on Reelmaster 3550- D machine s is accomplished on a CAN - bus communication system. T wo (2) specially de- signed, twisted cables form the bus for the ne twork used on the machine. These wi res provide the data p ...

  • Toro 3550-D - page 203

    Reelmaster 3550−D Page 5 − 45 Electrical System Oil Pressure Switch The engine oil pressure switch is located on the engine below the alternator (Fig. 50). The oil pressure switch is a normally closed switch that opens with pressure. The oil pressure switch should open at approximately 8 PSI (0.56 kg/cm 2 ) . If low engine oil pressure allows t ...

  • Toro 3550-D - page 204

    Reelmaster 3550−D Page 5 − 46 Electrical System Worklight Switch The worklight switch is located on the control panel (Fig. 51). This rocker switch allows the worklights (headlights) to be turned on and off. T esting 1. Park machine on level surface, lower cutting units, stop engine, apply parking brake and remove key from ignition switch. 2. R ...

  • Toro 3550-D - page 205

    Reelmaster 3550−D Page 5 − 47 Electrical System Service and Repairs NOTE: For engine component repair information, see th e Kubota W orkshop Manual: 05 Series Diesel Engine. Battery Storage If the machine will be stored for more than 30 days: 1. Remove the battery and charge it fully (see Battery Service in this section). 2. Either store batter ...

  • Toro 3550-D - page 206

    Reelmaster 3550−D Page 5 − 48 Electrical System Battery Service The battery is the heart of the electrical system. With regular and proper service, battery life can be extended. Additionally , battery and electrical component failure can be prevented (see Battery Storage and Battery Care in this chapter). CAUTION Use extreme caution to avoid sp ...

  • Toro 3550-D - page 207

    Reelmaster 3550−D Page 5 − 49 Electrical System Battery T esting 1. Conduct a hydrometer test of the battery electrolyte. IMPORT ANT : Make sure the area around the cells is clean before opening the battery caps. A. Measure the specific gravity of each cell with a hydrometer . Draw electrolyte in and out of the hydrometer barrel prior to taking ...

  • Toro 3550-D - page 208

    Reelmaster 3550−D Page 5 − 50 Electrical System Battery Charging T o minimize possible damage to the battery and allow the battery to be fully charged, the slow charging meth- od is presented here. This charging method can be ac- complished with a constant current battery charger which is available in most locations. CAUTION Follow the battery ...

  • Toro 3550-D - page 209

    Reelmaster 3550−D Page 5 − 51 Electrical System Cartridge V alve Coil Replacement Th e solenoid valve coil on the hydraulic control manifold (Fig. 54) can be replaced without opening the hydraulic system. Removal 1. Park machine on a level surface, lower cutting decks, engage parking brake, stop engine and remove key from the ignition switch. 2 ...

  • Toro 3550-D - page 210

    Reelmaster 3550−D Page 5 − 52 Electrical System Worklight Bulb Replacement The worklights are adjustable left and right, and up and down as necessary . The worklights use a replaceable halogen bulb. CAUTION The worklights use a halogen bulb that becomes extremely hot when in operation. Handling a hot bulb can cause severe burns and personal inj ...

  • Toro 3550-D - page 211

    Reelmaster 3550−D Page 6 − 1 Chassis Chapter 6 Chassis T able of Contents SPECIFICA TIONS 2 ............................ SPECIAL T OOLS 2 ............................. ADJUSTMENTS 3 .............................. Adjust Brakes 3 ............................... SERVICE AND REP AIRS 4 ...................... Operator Seat 4 ....................... ...

  • Toro 3550-D - page 212

    Reelmaster 3550−D Page 6 − 2 Chassis Specifications Item Description T ire pressure 12 PSI (96 kPa) Wheel lug nut torque 70 to 90 ft−lb (95 to 122 N−m) Special T ools Order special tools from your T oro Distributor . Wheel Hub Puller Part Number: TOR4097 The wheel hub puller allows safe removal of the wheel hub from the shaft of wheel motor ...

  • Toro 3550-D - page 213

    Reelmaster 3550−D Page 6 − 3 Chassis Adjustments Adjust Brakes CAUTION Before and after adjusting the brakes, always check the brakes in a wide open area that is flat and free of other persons and obstructions. 1. Check brake adjustment as follows: A. Park machine on a level surface, lower cutting units, stop engine and remove key from the igni ...

  • Toro 3550-D - page 214

    Reelmaster 3550−D Page 6 − 4 Chassis Service and Repairs Operator Seat 1. Bottom cushion 2. Back cushion 3. Seat belt 4. Flat washer 5. Flat washer 6. Cap screw 7. Bottom cover 8. Armrest kit 9. Back cover 10. Seat switch 1 1. Adjusting track − RH 12. T rack − LH 13. Support strap 14. Flange nut 15. Knob kit 16. Weight indicator 17. Weight ...

  • Toro 3550-D - page 215

    Reelmaster 3550−D Page 6 − 5 Chassis This page is intentionally blank. Chassis ...

  • Toro 3550-D - page 216

    Reelmaster 3550−D Page 6 − 6 Chassis Front Wheels and Brakes Figure 5 FRONT RIGHT Antiseize Lubricant 70 to 90 ft−lb (95 to 122 N−m) 250 to 275 ft−lb (339 to 372 N−m) 1. Hydraulic wheel motor (LH shown) 2. Brake drum 3. Socket head screw (4 per motor) 4. Brake bracket 5. Lock nut (4 per motor) 6. Wheel hub 7. Lock nut 8. Front wheel ass ...

  • Toro 3550-D - page 217

    Reelmaster 3550−D Page 6 − 7 Chassis Removal (Fig. 5) 1. Park machine on a level surface, lower cutting units, stop engine, engage parking brake and remove key from the ignition switch. W ARNING Before jacking up the machine, review and follow Jacking Instructions in Chapter 1 − Safety . 2. Jack up front wheel and use jack stands or blocking ...

  • Toro 3550-D - page 218

    Reelmaster 3550−D Page 6 − 8 Chassis 9. Lower wheel to ground. T orque wheel lug nuts from 70 to 90 ft−lb (95 to 122 N−m) in a crossing pattern. 10. T orque lock nut from 250 to 350 ft−lb (339 to 474 N−m) . Release parking brake. 1 1. Check brake adjustment and and adjust if necessary (see Adjust Brakes in the Adjustments section). 1. R ...

  • Toro 3550-D - page 219

    Reelmaster 3550−D Page 6 − 9 Chassis This page is intentionally blank. Chassis ...

  • Toro 3550-D - page 220

    Reelmaster 3550−D Page 6 − 10 Chassis Rear Fork and Wheel 1. Cap screw 2. Thrust washer 3. Lock washer 4. Flange bushing (2) 5. Rear casting 6. Rear fork 7. Socket head screw (4) 8. Plug 9. Ball joint (2) 10. Retaining ring (2) 1 1. Grease fitting 12. Hydraulic steering cylinder 13. Wheel motor 14. Lock nut (4) 15. Key 16. Drive stud (4) 17. Hu ...

  • Toro 3550-D - page 221

    Reelmaster 3550−D Page 6 − 1 1 Chassis Removal (Fig. 7) 1. Park machine on a level surface, lower cutting units, stop engine, engage parking brake, and remove key from the ignition switch. 2. Remove hood from the machine. W ARNING Before jacking up the machine, review and follow Jacking Instructions in Chapter 1 − Safety . 3. Raise and safely ...

  • Toro 3550-D - page 222

    Reelmaster 3550−D Page 6 − 12 Chassis Brake Lever Linkages 1. Pop rivet (4) 2. Control panel cover 3. Cover bracket (2) 4. Magnetic catch (2) 5. Hex washer head screw (4) 6. Strike bracket (2) 7. Lever assembly 8. Lock nut 9. Parking brake spacer 10. Cap screw 1 1. Flat washer 12. Cotter pin 13. Clevis pin 14. Parking brake link 15. Clevis pin ...

  • Toro 3550-D - page 223

    Reelmaster 3550−D Page 6 − 13 Chassis 1. Park machine on a level surface, lower cutting units, stop engine, engage parking brake, and remove key from the ignition switch. 2. Remove control panel cover from the machine. IMPORT ANT : When removing the adjustable clevis, adjustment rod, or the brake lever , make sure to mark both parts. Marking bo ...

  • Toro 3550-D - page 224

    Reelmaster 3550−D Page 6 − 14 Chassis Steering Column 1. Steering arm 2. Flange nut 3. Flange head screw (2) 4. Steering valve bracket 5. Cap screw (2) 6. Pivot hub (2) 7. Steering cover 8. Cap screw (5) 9. Ball knob 10. Steering tilt lever 1 1. Steering control valve 12. Tilt bracket 13. Cap screw 14. Flat washer 15. Flange nut 16. Steering wh ...

  • Toro 3550-D - page 225

    Reelmaster 3550−D Page 6 − 15 Chassis Disassembly 1. Park machine on a level surface, lower cutting units, stop engine, engage parking brake, and remove key from the ignition switch. 2. Remove philips head screws and steering wheel cap from the steering wheel. 3. Remove steering wheel nut from the steering control valve. Pull steering wheel fro ...

  • Toro 3550-D - page 226

    Reelmaster 3550−D Page 6 − 16 Chassis Front Lift Arms 1. Pivot yoke (3) 2. Thrust washer (2 per yoke) 3. Flange bushing (2 per lift arm) 4. L ynch pin (3) 5. Retaining ring (2 per pin) 6. Thrust washer (2 per pin) 7. Pin (3) 8. Flange head screw (3) 9. Recessed bumper (3) 10. Flange bushing (2 per lift arm) 1 1. Lift arm #5 12. Lift arm pin (3) ...

  • Toro 3550-D - page 227

    Reelmaster 3550−D Page 6 − 17 Chassis Removal (Fig. 1 1) 1. Park machine on a level surface, lower cutting units, stop engine, engage parking brake, and remove key from the ignition switch. 2. Remove cutting units (see Chapter 7 − Cutting Units in this manual). 3. Remove lynch pin and thrust washer securing pivot yoke to lift arm and remove p ...

  • Toro 3550-D - page 228

    Reelmaster 3550−D Page 6 − 18 Chassis Rear Lift Arms 1. Pivot yoke (2) 2. Thrust washer (2 per pivot yoke) 3. Flange bushing (2 per lift arm) 4. Lynch pin (2) 5. Flange bushing (2 per lift arm) 6. #3 lift arm 7. #2 lift arm 8. Retaining ring (2 per pin) 9. Thrust washer (2 per pin) 10. Pin (2) 1 1. Counterbalance spring (RH) 12. Counterbalance ...

  • Toro 3550-D - page 229

    Reelmaster 3550−D Page 6 − 19 Chassis Removal (Fig. 12) 1. Park machine on a level surface, lower cutting units, stop engine, engage parking brake, and remove key from the ignition switch. 2. Remove cutting units (see Chapter 7 − Cutting Units in this manual). 3. Remove lynch pin and thrust washer securing pivot yoke to lift arm and remove pi ...

  • Toro 3550-D - page 230

    Reelmaster 3550−D Page 6 − 20 Chassis This page is intentionally blank. ...

  • Toro 3550-D - page 231

    Reelmaster 3550−D Cutting Units Page 7 − 1 Chapter 7 Cutting Units T able of Contents SPECIFICA TIONS 2 ............................ GENERAL INFORMA TION 3 ..................... Cutting Unit Operator ’s Manual 3 ............... Cutting Unit Removal and Installation 3 .......... SPECIAL TOOLS 5 ............................. F ACTORS THA T CAN ...

  • Toro 3550-D - page 232

    Reelmaster 3550−D Cutting Units Page 7 − 2 Specifications Figure 1 Frame Construction: Precision machined die cast alu- minum cross member with two (2) bolt−on cast alumin- um side plates. Reel Construction: Reels are 18 inches (45.7 cm) in length and 5 inch (12.7 cm) in diameter . High strength, low alloy steel blades are thru hardened and i ...

  • Toro 3550-D - page 233

    Reelmaster 3550−D Cutting Units Page 7 − 3 General Information Cutting Unit Operator ’ s Manual The Cutting Unit Operator ’s Manual provides informa- tion regarding the operation, general maintenance and maintenance intervals for the cutting units on your Reel- master machine. Additionally , if optional kits have been installed on the cutti ...

  • Toro 3550-D - page 234

    Reelmaster 3550−D Cutting Units Page 7 − 4 Cutting Unit Installation IMPORT ANT : When installing cutting unit to ma- chine, make sure that turf compensator spring is mounted on the same side of the cutting unit as the hydraulic reel drive motor . Also, make sure that cut- ting unit is installed on machine with motor and weight properly orienta ...

  • Toro 3550-D - page 235

    Reelmaster 3550−D Cutting Units Page 7 − 5 Special T ools Special tools are available from your T oro Distributor . Some tools may have been supplied with your machine or are available as TORO parts. Gauge Bar Assembly T oro Part Number: 108−6715 Use gauge bar to verify height−of−cut adjustment. Figure 7 Used for Height−of− Cut adjust ...

  • Toro 3550-D - page 236

    Reelmaster 3550−D Cutting Units Page 7 − 6 Bedknife Screw T ool T oro Part Number: T OR510880 This screwdriver−type bit is made to fit T oro bedknife at- taching screws. Use this bit with a torque wrench to se- cure the bedknife to the bedbar . IMPORT ANT : T o prevent damage to the bedbar , DO NOT use an air or manual impact wrench with this ...

  • Toro 3550-D - page 237

    Reelmaster 3550−D Cutting Units Page 7 − 7 Spline Insert T ool T oro Part Number: TOR41 12 (8 tooth) Use the spline insert tool for rotating the cutting reel when hydraulic motor is removed. Also, use this tool for installation of threaded inserts into the cutting reel shaft. Figure 13 Roller Rebuild Kit T oro Part Number: 1 15−0803 This tool ...

  • Toro 3550-D - page 238

    Reelmaster 3550−D Cutting Units Page 7 − 8 T urf Evaluator T ool T oro Model Number: 04399 Many turf discrepancies are subtle and require closer examination. In these instances, the T urf Evaluator grass viewing tool is helpful. It can assist turf managers and service technicians in determining causes for poor reel mower performance and in comp ...

  • Toro 3550-D - page 239

    Reelmaster 3550−D Cutting Units Page 7 − 9 Factors That Can Affect Cutting Performance There are a number of factors that can contribute to un- satisfactory quality of cut, some of which may be turf conditions. T urf conditions such as excessive thatch, “sponginess” or attempting to cut off too much grass height may not always be overcome b ...

  • Toro 3550-D - page 240

    Reelmaster 3550−D Cutting Units Page 7 − 10 Factor Possible Problem/Correction Reel and bedknife sharpness A reel and/or bedknife that has rounded cutting edges or “rifling” (grooved or wavy appearance) cannot be corrected by tightening the bedknife to reel contact. Grind cutting reel to remove taper and/or rifling. Grind bedknife to sharpe ...

  • Toro 3550-D - page 241

    Reelmaster 3550−D Cutting Units Page 7 − 1 1 Factor Possible Problem/Correction Roller condition and roller type Make sure that front and rear rollers rotate freely . Repair roller bearings as necessary . See Roller Service in the Service and Repairs section of this chapter . Refer to Cutting Unit Operator ’s Manual for roller options. Rear l ...

  • Toro 3550-D - page 242

    Reelmaster 3550−D Cutting Units Page 7 − 12 This page is intentionally blank. ...

  • Toro 3550-D - page 243

    Reelmaster 3550−D Cutting Units Page 7 − 13 Set Up and Adjustments Characteristics CAUTION Never install or work on the cutting units or lift arms with the engine running. Always stop en- gine and remove key first. The dual knob bedknife−to−reel adjustment system in- corporated in this cutting unit simplifies the adjustment procedure needed ...

  • Toro 3550-D - page 244

    Reelmaster 3550−D Cutting Units Page 7 − 14 Leveling Rear Roller The precision machined components of the cutting unit frame keep the rear roller and cutting reel in alignment (parallel). If the side plates are disassembled or as the cutting reel wears, a limited amount of side plate adjust- ment is possible to make sure that the cutting unit i ...

  • Toro 3550-D - page 245

    Reelmaster 3550−D Cutting Units Page 7 − 15 Service and Repairs Cutting Unit Reel Motor 1. Park the machine on a level surface, engage parking brake, lower cutting units and stop engine. Remove key from the ignition switch. 2. Read the General Precautions for Removing and Installing Hydraulic System Components in this chapter . 3. Label all hyd ...

  • Toro 3550-D - page 246

    Reelmaster 3550−D Cutting Units Page 7 − 16 5. Remove caps or plugs from fittings and hoses. IMPORT ANT : When installing the hydraulic hoses, make sure that hydraulic hoses are straight (not twisted) before tightening the hoses to the motor fittings. 6. Lubricate and install new O−rings on motor fittings. Correctly connect hydraulic hoses to ...

  • Toro 3550-D - page 247

    Reelmaster 3550−D Cutting Units Page 7 − 17 Backlapping DANGER TO A VOID PERSONAL INJUR Y OR DEA TH: D Never place hands or feet in the reel area while the engine is running. Stay away from the cutting reels when backlapping. D When backlapping, run engine at idle speed only . D While backlapping, the reels may stall and then restart. D Do not ...

  • Toro 3550-D - page 248

    Reelmaster 3550−D Cutting Units Page 7 − 18 Bedbar Assembly 1. Side plate 2. Rubber bushing (2) 3. Flange bushing (2) 4. Plastic washer (4) 5. Metal washer (2) 6. Bedbar pivot bolt (2) 7. Lock nut (2) 8. Screw (8) 9. Bedknife 10. Bedbar 1 1. Frame 12. Bedbar adjuster shaft (2) 13. W ave washer (2) 14. Flange bushing (4) 15. W asher (2) 16. Lock ...

  • Toro 3550-D - page 249

    Reelmaster 3550−D Cutting Units Page 7 − 19 Bedbar Removal (Fig. 23) 1. Position machine on a clean and level surface, lower cutting units, stop engine, engage parking brake and re- move key from the ignition switch. 2. Remove the cutting unit from the machine. Use the cutting unit kickstand to support the cutting unit (see Special T ools). 3. ...

  • Toro 3550-D - page 250

    Reelmaster 3550−D Cutting Units Page 7 − 20 Bedbar Adjuster Service Figure 25 1. Bedbar assembly 2. Bedbar adjuster shaft 3. W ave washer 4. Flange bushing (2) 5. Flat washer 6. Lock nut 7. Bedbar adjuster screw 8. W asher 9. Compression spring 10. Lock nut 1 1. Cap screw 12. Detent 13. Frame FRONT RIGHT 14 to 16 ft−lb (19 to 21 N−m) Antise ...

  • Toro 3550-D - page 251

    Reelmaster 3550−D Cutting Units Page 7 − 21 Removal (Fig. 25) 1. Remove lock nut, compression spring and washer from bedbar adjuster screw . 2. Remove bedbar (see Bedbar Removal in this chapter . NOTE: Bedbar adjuster shaft has left−hand internal threads. 3. Unscrew bedbar adjuster screw from the bedbar ad- juster shaft. 4. Remove lock nut an ...

  • Toro 3550-D - page 252

    Reelmaster 3550−D Cutting Units Page 7 − 22 Bedknife Replacement and Grinding Bedknife Removal 1. Remove bedbar from cutting unit (see Bedbar Re- moval in this chapter . NOTE: 18” cutting units use 6 screws to secure bed- knife to bedbar . 22” cutting units use 8 screws to secure bedknife to bedbar . 2. Remove screws from bedbar using a soc ...

  • Toro 3550-D - page 253

    Reelmaster 3550−D Cutting Units Page 7 − 23 Bedknife Grinding Since there can be variations in the mounting surface of the bedbar , a new bedknife will not be perfectly flat after it is installed to the bedbar . Because of this, it is neces- sary to grind a new bedknife after installing it to the bed- bar . Follow the bedknife grinding specific ...

  • Toro 3550-D - page 254

    Reelmaster 3550−D Cutting Units Page 7 − 24 Reel Assembly 1. Cutting reel 2. Frame 3. Bedbar assembly 4. RH side plate 5. LH side plate 6. O−ring (2) 7. Weight 8. Flange nut (4)* 9. Wire Spring 10. Cap screw (4)* 1 1. Threaded insert (4) 12. Flange head screw (4) 13. O−Ring (2) 14. Relief valve (2) 15. Plug 16. Grease fitting (reel motor si ...

  • Toro 3550-D - page 255

    Reelmaster 3550−D Cutting Units Page 7 − 25 1. Frame 2. LH side plate 3. RH side plate 4. Shoulder bolt (4) 5. Carrier frame 6. Flange head screw (2) 7. Flange bushing (2) 8. Rear grass shield 9. Spacer (2) 10. Shim (as required)* 1 1. Flange nut (2) 12. Flange nut (4) 13. Special screw 14. Flat washer 15. Cap screw 16. Shim (as required) Figur ...

  • Toro 3550-D - page 256

    Reelmaster 3550−D Cutting Units Page 7 − 26 7. Remove cap screw and flat washer that secure rear grass shield to LH side plate. 8. Remove flange head screw and flange nut that se- cures frame spacer and carrier frame to LH side plate. NOTE: Th e reel bearings and grease seals are press fit on the cutting reel shaft and should remain on the reel ...

  • Toro 3550-D - page 257

    Reelmaster 3550−D Cutting Units Page 7 − 27 NOTE: Th e parallel position of the rear roller to the cut- ting reel is controlled by the precision machined frame and side plates of the cutting unit. If necessary , the cut- ting unit side plates can be loosened and a slight adjust- ment can be made to parallel the rear roller with the cutting reel ...

  • Toro 3550-D - page 258

    Reelmaster 3550−D Cutting Units Page 7 − 28 Reel Assembly Service 1. Cutting reel 2. Threaded insert (RH thread) 3. Plastic plug 4. Retaining ring 5. Special washer 6. Flocked seal 7. Sealed bearing 8. Threaded insert (LH thread) 9. Groove indicating LH threads 10. Reel spider 1 1. Retaining ring groove 12. Bearing shoulder Figure 35 85 to 95 f ...

  • Toro 3550-D - page 259

    Reelmaster 3550−D Cutting Units Page 7 − 29 Assembly of Cutting Reel (Fig. 35) 1. If flocked seals and/or bearings were removed from reel shaft, discard removed components and replace. 2. Make sure that the retaining ring is fully seated into the groove on the cutting reel shaft. 3. Install special washer with recessed slots toward bearing. Dri ...

  • Toro 3550-D - page 260

    Reelmaster 3550 - D Cutting Units Page 7 - 30 Prepari ng Reel for Grinding Presently , the Reelmaster 3550 - D machines use scal- loped radial r eels (Fig. 3 8). The rad ial reel design has blades that are placed in line with the center of the reel shaft. The rear of the blade ha s a scalloped relief. Before grin ding a cutting reel, ma ke sure tha ...

  • Toro 3550-D - page 261

    Reelmaster 3550−D Cutting Units Page 7 − 31 Front Roller Removal (Fig. 40) 1. Position machine on a clean and level surface, lower cutting units, stop engine, engage parking brake and re- move key from the ignition switch. 2. Remove the cutting unit from the machine and place on a level working surface. Use cutting unit kickstand (see Special T ...

  • Toro 3550-D - page 262

    Reelmaster 3550−D Cutting Units Page 7 − 32 Rear Roller Removal (Fig. 41) 1. Position machine on a clean and level surface, lower cutting units, stop engine, engage parking brake and re- move key from the ignition switch. 2. Remove the cutting unit from the machine and place on a level working surface. Place support blocks under bedbar to raise ...

  • Toro 3550-D - page 263

    Reelmaster 3550−D Cutting Units Page 7 − 33 Roller Service Disassembly (Fig. 42) 1. Remove bearing lock nut from each end of roller shaft. 2. Loosely secure roller assembly in bench vise and lightly tap one end of roller shaft until outer seals and bearing are removed from opposite end of roller tube. Remove second set of outer seals and bearin ...

  • Toro 3550-D - page 264

    Reelmaster 3550−D Cutting Units Page 7 − 34 3. From the roller tube end with only the inner seal installed, carefully install the roller shaft into the roller tube. Make sure that seals are not damaged as shaft is installed. 4. Install new bearing and outer seals into second end of roller tube: A. Position a second new bearing to roller shaft a ...

  • Toro 3550-D - page 265

    Reelmaster 3550−D Cutting Units Page 7 − 35 This page is intentionally blank. DP A Cutting Units ...

  • Toro 3550-D - page 266

    Reelmaster 3550 - D Cutting Units Page 7 - 36 Rear Roller Brush (Optional) 1. Roller brush 2. Bearing housing (non - driven) 3. Bearing housing (driven) 4. Bearing (2) 5. Seal (3) 6. Excluder seal (2) 7. J - bolt (2) 8. Roller brush shaft 9. Lock nut (2) 10. O - ring 1 1. Carriage bolt (2) 12. Spacer 13. Hardened washer (as require d) 14. Driven pu ...

  • Toro 3550-D - page 267

    Reelmaster 3550−D Cutting Units Page 7 − 37 NOTE: Drive components for the rear roller brush are located on the opposite side of the cutting unit from the cutting reel hydraulic motor . Figure 48 shows compo- nents used when the brush drive is on the left side of the cutting unit. NOTE: The Installation Instructions for the rear roller brush ki ...

  • Toro 3550-D - page 268

    Reelmaster 3550−D Cutting Units Page 7 − 38 E. Apply antiseize lubricant to splines of roller brush shaft before sliding hardened washer(s) and driven pulley onto shaft. T orque flange nut that secures driv- en pulley to roller brush shaft from 27 to 33 ft−lb (36 to 45 N−m) . F . Position excluder seals on brush shaft so that seals just tou ...

  • Toro 3550-D - page 269

    Reelmaster 3550−D Groomer Page 8 − 1 Chapter 8 Groomer (Optional) T able of Contents GROOMING PERFORMANCE 2 .................. TROUBLESHOOTING 3 ......................... Groomer Reel Mechanical Problems 3 ........... SERVICE AND REP AIRS 4 ...................... Groomer Drive Belt Replacement 4 ............. Groomer Plate Assembly 6 .......... ...

  • Toro 3550-D - page 270

    Reelmaster 3550−D Groomer Page 8 − 2 Grooming Performance There are a number of factors that can affect the per- formance of grooming. These factors vary for different golf courses and from fairway to fairway . It is important to inspect the turf frequently and vary the grooming practice with turf needs. IMPORT ANT : Improper or overaggressive ...

  • Toro 3550-D - page 271

    Reelmaster 3550−D Groomer Page 8 − 3 T roubleshooting Groomer Reel Mechanical Problems Problem Possible Causes Correction No rotation of the groomer reel. The groomer drive belt needs to be adjusted. Seized groomer reel or idler bear- ing(s) in groomer side plate(s). Broken or damaged idler spring. The groomer drive belt is worn, bro- ken or da ...

  • Toro 3550-D - page 272

    Reelmaster 3550−D Groomer Page 8 − 4 Service and Repairs CAUTION Never work on the groomer with the engine running. Always stop the engine, remove the key from the ignition switch and wait for all machine movement to stop before working on the groomer . NOTE: The Groomer Operator ’s Manual provides in- formation regarding the installation, se ...

  • Toro 3550-D - page 273

    Reelmaster 3550−D Groomer Page 8 − 5 This page is intentionally left blank. Groomer ...

  • Toro 3550-D - page 274

    Reelmaster 3550−D Groomer Page 8 − 6 Groomer Plate Assembly Figure 3 1. Groomer reel 2. Pulley spacer 3. Washer (as required) 4. Square key 5. Driven pulley 6. Flange nut 7. Socket head screw (4) 8. Idler plate 9. Idler pulley assembly 10. Lock nut 1 1. Flange head screw 12. Drive pulley 13. Retaining ring 14. Extension spring 15. Pivot hub (dr ...

  • Toro 3550-D - page 275

    Reelmaster 3550−D Groomer Page 8 − 7 Removal (Fig. 3) 1. Park machine on a clean and level surface, lower cutting units completely to the ground, stop engine, en- gage parking brake and remove key from the ignition switch. NOTE: If cutting unit is equipped with powered rear roller brush, removal of roller brush components will be necessary to s ...

  • Toro 3550-D - page 276

    Reelmaster 3550−D Groomer Page 8 − 8 2. Install groomer plate assembly to groomer non− drive side of cutting unit: A. Apply a thin layer of grease to inner lip of seal and carefully position non−drive side groomer plate onto groomer shaft and slide to cutting unit. B. Apply antisieze lubricant to the outside diameter of the pivot hub and po ...

  • Toro 3550-D - page 277

    Reelmaster 3550−D Groomer Page 8 − 9 K. Check pulley alignment by laying a straight edge along the outer face of the drive pulley (Fig. 5). Drive and driven pulleys should be in line within 0.030” (0.70 mm) . If necessary , align pulleys by removing driven pulley and installing or removing washer(s) between pulley and pulley spacer . L. After ...

  • Toro 3550-D - page 278

    Reelmaster 3550−D Groomer Page 8 − 10 Groomer Reel 1. Groomer reel 2. Pulley spacer 3. Washer (as required) 4. Square key 5. Driven pulley 6. Flange nut 7. Socket head screw (4) 8. Idler plate 9. Idler pulley assembly 10. Lock nut 1 1. Flange head screw 12. Drive pulley 13. Retaining ring 14. Extension spring 15. Pivot hub (drive) 16. O−ring ...

  • Toro 3550-D - page 279

    Reelmaster 3550−D Groomer Page 8 − 1 1 Removal (Fig. 7) 1. Park machine on a clean and level surface, lower cutting units completely to the ground, stop engine, en- gage parking brake and remove key from the ignition switch. If desired, remove cutting unit from machine (see T raction Unit Operator ’s Manual). NOTE: If cutting unit is equipped ...

  • Toro 3550-D - page 280

    Reelmaster 3550−D Groomer Page 8 − 12 Groomer Reel Service Inspect groomer reel blades frequently for damage and wear . Straighten bent blades. Either replace worn blades or reverse the blades to put the sharpest blade edge forward (Fig. 9). Blades that are rounded to the midpoint of the blade tip must be reversed or replaced for best groomer p ...

  • Toro 3550-D - page 281

    Reelmaster 3550−D Groomer Page 8 − 13 5. If groomer reel is equipped with broomer kit: A. Slide a brush into each groove around the full length of the groomer reel (Fig. 1 1). Make sure brushes are seated in groomer blade slots (Fig. 12) B. Loosely wrap the straps around the groomer reel shaft and brushes as shown (Fig. 1 1). Straps should be p ...

  • Toro 3550-D - page 282

    Reelmaster 3550−D Groomer Page 8 − 14 Height Adjuster Assembly Figure 13 1. Groomer plate (LH drive shown) 2. Shoulder bolt 3. Ball joint rod 4. Jam nut 5. Compression spring 6. Flange head screw 7. Lower ramp 8. External snap ring 9. Upper ramp 10. Bushing 1 1. Flat washer 12. Groomer adjuster 13. Detent spring 14. W asher head screw 17 to 21 ...

  • Toro 3550-D - page 283

    Reelmaster 3550 - D Foldout Drawings Page 9 - 1 Chapter 9 Foldout Drawings T able of Contents ELECTRICAL DRA WING DESIGNA TIONS 2 ....... HYDRAULIC SCHEMA TIC 3 ... .................. ELECTRICAL SCHEMA TIC 4 .................... WIRE HARNESS DIAGRAM 5 .................... WIRE HARNESS DRA WING 6 . .................. Foldout Drawings ...

  • Toro 3550-D - page 284

    Reelmaster 3550 - D Foldout Drawings Page 9 - 2 Electrical Drawing Designations The following a bbreviations are us ed for wire harness colors on the electrical schematics and wire h arness drawings in this chapter . ABBREVIA TION COLOR BK BLACK BR or BN BROWN BU BLUE GN GREEN GY GRA Y OR ORANGE PK PINK Ro rR D R E D TT A N VIO VIOL ET Wo rW H W H ...

  • Toro 3550-D - page 285

    Page 8 − 3 Hydraulic Schematic Reelmaster 3550−D .73 .33 .58 500 PSI 3000 PSI 100−150 PSI 12.0 12.0 24.7 1.44 6.1 1000 PSI STEERING CYLINDER ENGINE IDLE 3200 / 1400 PUMP RPM = 0.96 x ENGINE RPM BACKLAP SWITCH (SW) REEL #4 LC FC PR V MV T M1 C1 P C4 G G1 M2 T C5 RV 1 S2 S4 S3 S1 P L 4.0 GPM 7.0 GPM BREA THER G2 G1 C2 MOW CONTROL MANIFOLD LIFT ...

  • Toro 3550-D - page 286

    Page 8 − 4 Electrical Schematic Reelmaster 3550−D All relays and solenoids are shown as de−energized. All ground wires are black. ...

  • Toro 3550-D - page 287

    Page 8 − 5 Harness Diagram Reelmaster 3550−D BLACK BLACK BLACK BLACK RED BLACK BLACK BLACK BLACK BLACK BROWN BROWN BLACK BLACK PINK GRA Y BLACK/WHITE RED/WHITE BLACK/WHITE RED/WHITE BLACK/WHITE RED/WHITE BLACK BROWN GREEN YELLOW BLACK BLUE BLACK ORANGE BLUE ORANGE GRA Y VIOLET GREEN GRA Y TA N WHITE BLUE BLACK/WHITE RED/WHITE GREEN YELLOW YELLO ...

  • Toro 3550-D - page 288

    Page 8 − 6 Harness Drawing Reelmaster 3550−D ...

Manufacturer Toro Category Lawn Mower

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- Toro technical drawings
- 3550-D manuals
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- or energy labels Toro 3550-D
All of them are important, but the most important information from the point of view of use of the device are in the user manual Toro 3550-D.

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A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Toro 3550-D by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Toro 3550-D.

A complete Toro manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

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2. Contents - index of all tips concerning the Toro 3550-D, that we can find in the current document
3. Tips how to use the basic functions of the device Toro 3550-D - which should help us in our first steps of using Toro 3550-D
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Toro 3550-D
5. FAQ - Frequently Asked Questions
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