Page 1 TIONS. Space is provided in Chapter 2 of this book to insert the Operator’s Manuals and Parts Catalogs for your machine. Replacement Operator’s Manuals are available on the internet at www.toro.com or by sending NOTE: A NOTE will give general information about the complete Model and Serial Number to: correct operation, maintenance, service, testing, or re- pair of the machine.
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Page 3 Table Of Contents Chapter 1 − Safety Chapter 6 − Electrical System Safety Instructions ......1 −...
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Page 5 Table Of Contents (Continued) Chapter 9 − P.T.O. System Chapter 11 − Electrical Diagrams Service and Repairs ......9 −...
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Page 7: Table Of Contents
Chapter 1 Safety Table of Contents SAFETY INSTRUCTIONS ..... . JACKING INSTRUCTIONS ..... Before Operating .
Page 8: Safety Instructions
A replacement Operator’s Manual is available on the Internet at www.Toro.com or B. Do not remove machine fuel tank cap while en- by sending the complete model and serial number to: gine is hot or running.
Page 9: Maintenance And Service
(or implement) to the the machine, use genuine Toro replacement parts and ground, stopping the engine and then using all of the hy- accessories. Replacement parts and accessories made...
Page 10: Jacking Instructions
Grounds- master. If any decal becomes illegible or damaged, in- stall a new decal. Part numbers are listed in your Parts Catalog. Order replacement decals from your Autho- rized Toro Distributor. Safety Page 1 − 4 Groundsmaster 3280−D/3320...
Page 11 Chapter 2 Product Records and Maintenance Table of Contents PRODUCT RECORDS ......Standard Torque for Dry, Zinc Plated and MAINTENANCE .
Page 12: Product Records
Equivalents and Conversions Product Records and Maintenance Page 2 − 2 Groundsmaster 3280−D/3320...
Page 13: Torque Specifications
For critical applications, as determined reduced by 25% for lubricated fasteners to achieve by Toro, either the recommended torque or a torque that the similar stress as a dry fastener. Torque values may is unique to the application is clearly identified and spe- also have to be reduced when the fastener is threaded cified in this Service Manual.
Page 14: Standard Torque For Dry, Zinc Plated And Steel Fasteners (Inch Series)
Standard Torque for Dry, Zinc Plated and Steel Fasteners (Inch Series) Grade 1, 5 & SAE Grade 1 Bolts, Screws, Studs & SAE Grade 5 Bolts, Screws, Studs & SAE Grade 8 Bolts, Screws, Studs & Thread Size 8 with Thin Sems with Regular Height Nuts Sems with Regular Height Nuts Sems with Regular Height Nuts...
Page 15: Standard Torque For Dry, Zinc Plated And
Standard Torque for Dry, Zinc Plated and Steel Fasteners (Metric Series) Class 8.8 Bolts, Screws and Studs with Class 10.9 Bolts, Screws and Studs with Thread Size Thread Size Regular Height Nuts Regular Height Nuts Regular Height Nuts Regular Height Nuts (Class 8 or Stronger Nuts) (Class 10 or Stronger Nuts) M5 X 0.8...
Page 16: Other Torque Specifications
Other Torque Specifications SAE Grade 8 Steel Set Screws Wheel Bolts and Lug Nuts Recommended Torque Thread Size Recommended Torque** Thread Size Thread Size Square Head Hex Socket 7/16 − 20 UNF 65 + 10 ft−lb 88 + 14 N−m Grade 5 1/4 −...
Page 17 Groundsmas- Distributor. If no parts list is available, be sure to provide ter 3320. your distributor with the Toro model and serial number. Most repairs and adjustments require tools which are commonly available in many service shops. The use of some specialized test equipment is explained in the en- gine service manual found at the end of this chapter.
Page 18: Specifications
Specifications Item Description Make / Designation Briggs & Stratton/Daihatsu, 4−stroke, Liquid Cooled, OHV, Gasoline Number of Cylinders Bore x Stroke mm (in.) 72 x 78 (2.834 x 3.07) Total Displacement cc (cu. in.) 952 (58.1) Compression Ratio 8.6:1 Firing Order 1 −...
Page 19: General Information
General Information Adding Oil to Engine When adding oil to the engine, maintain clearance be- tween the oil fill device and the oil fill opening in the valve cover (Fig. 1). This clearance is necessary to allow vent- ing when adding engine oil which will prevent oil from running into the breather tube and intake system.
Page 20: Adjustments
Adjustments Adjust Throttle Control Proper throttle operation is dependent upon proper ad- justment of throttle control. Make sure throttle control is operating properly. 1. Move remote throttle control lever to FAST position. 2. Check position of speed control lever on governor bracket.
Page 21: Adjust Engine Speed
Adjust Engine Speed 1. Allow engine to reach operating temperature before checking or adjusting engine speed. Make sure that throttle control is adjusted properly before adjusting en- gine speed (see Adjust Throttle Control in this section). 2. Park machine on a level surface, lower cutting deck (or implement) and engage parking brake.
Page 22: Service And Repairs
Service and Repairs Fuel System RIGHT FRONT Figure 6 1. Fuel tank 12. Hose clamp 23. Grommet 2. Seat plate 13. Fuel hose (tank venting) 24. Fuel gauge 3. Flange head screw (2 used) 14. Fuel hose (fuel pump to carburetor) 25.
Page 23 9. Disconnect fuel hoses from standpipe (item 22) and elbow fitting (item 20) on the top of the fuel tank. DANGER 10.Remove fuel tank using Figure 6 as a guide. Because gasoline is highly flammable, use cau- Fuel Tank Installation (Fig. 6) tion when storing or handling it.
Page 24: Air Cleaner
Air Cleaner RIGHT FRONT Figure 8 1. Air cleaner assembly 5. Hose clamp 9. Air inlet hose 2. Flat washer (2 used) 6. Cap screw (2 used) 10. Cap screw (2 used) 3. Lock nut 7. Lock washer (2 used) 11.
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Page 26: Radiator
Radiator RIGHT FRONT Figure 10 1. Radiator 13. Hose clamp 24. Hydraulic hose 2. Hydraulic hose 14. Vent tube 25. Coolant reservoir 3. Screw (8 used) 15. Clamp (2 used) 26. Hose 4. Radiator shield 16. Lower radiator hose 27. Reservoir cap 5.
Page 27 Removal (Fig. 10) 9. Remove four (4) cap screws, flat washers and lock nuts that secure fan shroud to radiator. Position fan 1. Park machine on a level surface, lower cutting deck shroud away from the radiator. (or implement), stop engine, engage parking brake and remove key from the ignition switch.
Page 28: Engine
Engine 50 to 60 ft−lb (68 to 81 N−m) 50 to 60 ft−lb (68 to 81 N−m) RIGHT FRONT Figure 11 1. Engine 11. Hex nut (4 used) 20. Engine mount bracket 2. Muffler bracket 12. Frame trim 21. Spacer (4 used) 3.
Page 29 5. Remove cap screws and flange nuts that secure bat- tery base to brackets. Remove battery base from ma- chine (Fig. 12). + − CAUTION Do not open radiator cap or drain coolant if the radiator or engine is hot. Pressurized, hot cool- ant can escape and cause burns.
Page 30 15.Disconnect wire harness connectors from the follow- ing engine components: NOTE: Label all electrical leads for reassembly pur- poses. A. Alternator connector and stud. B. High temperature shut down switch and temper- ature sender located on the water pump housing. C.
Page 31 12.Install air cleaner (see Air Cleaner Installation in this section). CAUTION IMPORTANT: Make sure that clutch pulley and P.T.O. pulley are aligned during P.T.O. shaft installa- One person should operate lift or hoist while the other person guides the engine into the ma- tion.
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Page 33 Service and repair parts for Kubota diesel engines are troubleshooting, testing and repair of the Kubota supplied through your local Toro Distributor. If a parts list 1105NA diesel engine used in the Groundsmaster is not available, be sure to provide your distributor with 3280−D.
Page 34: Specifications
Specifications Item Description Make / Designation Kubota, 4−stroke, Liquid Cooled, OHV Diesel Number of Cylinders Bore x Stroke mm (in.) 78 x 78.4 (3.07 x 3.09) Total Displacement cc (cu. in.) 1123 (68.53) Compression Ratio 22.0:1 Firing Order 1 (front) − 2 − 3 Dry Weight (approximate) kg (lb.) 93 (205) Fuel...
Page 35: Adjustments
Adjustments Adjust Throttle Control Proper throttle operation is dependent upon proper ad- justment of throttle control. Make sure throttle control is operating properly. 1. Move remote throttle control lever to FAST position. 2. Check position of speed control lever on fuel injec- tion pump.
Page 36: Service And Repairs
Service and Repairs Fuel System RIGHT FRONT Figure 2 1. Fuel tank 13. R−clamp 25. Control panel 2. Seat plate 14. Fuel hose (fuel pump to separator) 26. Thumb screw (4 used) 3. Flange head screw (2 used) 15. Hose clamp 27.
Page 37 9. Disconnect fuel hoses from standpipe (item 22) and elbow fittings (item 20) on the top of the fuel tank. DANGER 10.Remove fuel tank using Figure 2 as a guide. Because diesel fuel is highly flammable, use Fuel Tank Installation (Fig. 2) caution when storing or handling it.
Page 38: Air Cleaner
Air Cleaner RIGHT FRONT Figure 4 1. Air cleaner assembly 4. Intake air hose 7. Cap screw (2 used) 2. Flat washer (2 used) 5. Hose clamp 8. Air cleaner mount 3. Lock nut (2 used) 6. Air hose Removal 1.
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Page 40: Radiator
Radiator RIGHT FRONT Figure 6 1. Radiator/oil cooler assembly 12. Hose clamp 23. Carriage screw (4 used) 2. Radiator cap 13. Fan shroud 24. Flange head screw 3. Hose clamp 14. Lower radiator hose 25. Hood latch 4. Flat washer 15.
Page 41 3. Drain coolant from radiator. 3. Carefully position radiator assembly to the radiator support. Secure radiator with six (6) flange head screws A. Slowly remove radiator cap from the radiator. and flange nuts. B. Place drain pan below the radiator drain plug lo- 4.
Page 42: Engine
Engine 50 to 60 ft−lb (68 to 81 N−m) − 50 to 60 ft−lb (68 to 81 N−m) RIGHT FRONT Figure 8 1. Diesel engine 15. Cap screw (2 used per coupling) 29. Air cleaner bracket 2. Engine mount bracket 16.
Page 43 Removal (Fig. 8) 1. Park machine on a level surface, lower cutting deck (or implement), stop engine and remove key from the ignition switch. Chock wheels to keep the machine from moving. 2. Open hood (see Traction Unit Operator’s Manual). 3.
Page 44 12.Disconnect hoses from engine: CAUTION A. Loosen clamps and disconnect upper and lower radiator hoses from the engine. One person should operate lift or hoist while the B. At injector pump, loosen hose clamps and dis- other person guides the engine out of the ma- connect supply and return fuel hoses from the pump chine.
Page 45 Installation (Fig. 11) 8. Install clevis pin and cotter pin to secure hood cable to muffler bracket. 1. Locate machine on a level surface with cutting deck (or implement) lowered and key removed from the igni- 9. Connect transmission drive shaft to engine pulley tion switch.
Page 46 18.Position battery base to brackets and secure with 21.Connect positive (+) and then negative (−) battery cap screws and flange nuts. cables to the battery. 19.Install battery to machine (see Battery Service in the 22.Bleed fuel system (see Traction Unit Operator’s Service and Repairs section of Chapter 6 −...
Page 47 Chapter 5 Hydraulic System Table of Contents SPECIFICATIONS ......SERVICE AND REPAIRS .
Page 48: Specifications
Specifications Item Description Hydrostatic Transmission Sauer Danfoss (Sundstrand), U--type, Axial Piston Design, Model Series 15 Pump Maximum Displacement (per revolution) .9 Cubic Inches (15 cc) Motor Displacement (per revolution) .9 Cubic Inches (15 cc) Charge Pump Gerotor Pump in Hydrostat Displacement (per revolution) .3 Cubic Inches (4.9 cc) Implement (Lift/Steering) Relief Pressure...
Page 49: General Information
General Information Hydraulic Hoses Hydraulic hoses are subject to extreme conditions such as pressure differentials during operation and exposure WARNING to weather, sun, chemicals, very warm storage condi- tions or mishandling during operation and maintenance. These conditions can cause damage or premature dete- Before disconnecting or performing any work rioration.
Page 50 SAE Straight Thread O- -Ring Port - - Non- -adjustable 1. Make sure both threads and sealing surfaces are free of burrs, nicks, scratches or any foreign material. 2. Always replace the o--ring seal when this type of fit- ting shows signs of leakage. O- -Ring 3.
Page 51: Towing Traction Unit
Towing Traction Unit IMPORTANT: If towing limits are exceeded, severe damage to the transmission may occur. If it becomes necessary to tow (or push) the machine, tow (or push) at a speed below 3 mph (4.8 kph), and for a very short distance. If machine needs to be moved a considerable distance, machine should be transported on a trailer.
Page 52: Hydraulic Schematics
Hydraulic Schematics Rev. A Hydraulic System Page 5 - - 6 Groundsmaster 3280--D/3320...
Page 53 Rev. A Groundsmaster 3280--D/3320 Page 5 - - 7 Hydraulic System...
Page 54: Hydraulic Flow Diagrams
Hydraulic Flow Diagrams Figure 8 Rev. A Hydraulic System Page 5 - - 8 Groundsmaster 3280--D/3320...
Page 55: Traction Circuit
Traction Circuit Forward Direction (Fig. 8) Reverse Direction The hydrostatic transmission input shaft is rotated by a The traction circuit operates essentially the same in re- drive shaft off the front of the engine crankshaft. Pushing verse as it does in the forward direction. However, the the top of the traction pedal rotates the variable dis- flow through the circuit is reversed.
Page 56 Figure 9 Rev. A Hydraulic System Page 5 - - 10 Groundsmaster 3280--D/3320...
Page 57: Lift Circuit
Lift Circuit The hydrostatic transmission charge pump supplies Lower Cutting Deck (Or Implement) (Fig. 10) charge oil for the closed loop traction circuit in addition When the cutting deck (or implement) is to be lowered, to supplying flow for the steering circuit and the cutting the control valve spool is moved forward causing the pi- deck (or implement) lift circuit.
Page 58: Steering Circuit
Steering Circuit The charge pump in the hydrostat supplies flow for the out the L port. Pressure retracts the steering cylinder for steering circuit and for the cutting deck (or implement) a left turn. The rotary meter ensures that the oil flow to lift circuit.
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Page 60: Special Tools
Special Tools Order these tools from your Toro Distributor. Hydraulic Pressure Test Kit Toro Part Number: TOR47009 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 provided for remote readings.
Page 61: Hydraulic Test Fitting Kit
Figure 14 O- -Ring Kit Toro Part Number: 16- -3799 The kit includes o--rings in a variety of sizes for face seal and port seal hydraulic connections. It is recommended that o--rings be replaced whenever a hydraulic connec- tion is loosened.
Page 62: Troubleshooting
Troubleshooting The cause of an improperly functioning hydraulic sys- Continued use of an improperly functioning hydraulic tem is best diagnosed with the use of proper testing system could lead to extensive internal component equipment and a thorough understanding of the com- damage.
Page 63 Problem Possible Cause Traction response is sluggish Charge pressure is low. Hydraulic oil is very cold. Hydrostat check valve is not seating or is damaged. Brakes are not released. Hydrostat is worn or damaged. No traction in either direction Brakes are not released. Oil level in reservoir (front axle) is low.
Page 64 Problem Possible Cause Cutting deck (or implement) raises, Lift cylinder leaks internally. but will not stay up Lift control valve leaks. Steering inoperative or sluggish Engine speed is too low. Reservoir (front axle) oil level is low. Steering components (e.g. tie rods, steering cylinder ends) worn or binding.
Page 65: Testing
Testing The most effective method for isolating problems in the 1. Thoroughly clean the machine before disconnecting hydraulic system is by using hydraulic test equipment or disassembling any hydraulic components. Always such as pressure gauges and flow meters in the circuits keep in mind the need for cleanliness when working on during various operational checks (See Special Tools hydraulic equipment.
Page 66: Charge Pressure Test
Charge Pressure Test (Using Pressure Gauge) A charge pressure test should be performed to identify 11. The pressure should drop no more than 15% from if a worn or damaged hydrostatic transmission is caus- initial test reading (Step 8 above). A pressure drop of ing a hydraulic system problem.
Page 67: Implement Relief Pressure Test
Implement Relief Pressure Test (Using Pressure Gauge) The implement relief pressure test should be done if a problem is suspected with the implement relief valve. NOTE: When conducting the Implement Relief Pres- sure Test, use a 5000 PSI (350 Bar) Pressure Gauge. 1.
Page 68: Lift Cylinder Internal Leakage Test
Lift Cylinder Internal Leakage Test LOOK FOR LEAKAGE HYDROSTATIC TRANSMISSION & CHARGE PUMP 700 -- 1000 LIFT TEST CYLINDERS PORT (FULLY EXTENDED) COOLER STEERING VALVE LIFT VALVE LIFT LEVER PULLED TO RAISE STEERING CYLINDER Working Pressure Low Pressure (Charge) Return or Suction Flow Figure 20 Rev.
Page 69 Procedure for Lift Cylinder Internal Leakage Test: 11. After testing is completed, remove the support from the cutting deck (or implement). Start engine and oper- The lift cylinder internal leakage test should be per- ate lift cylinders through several up and down cycles. formed if a cutting deck (or implement) raise and lower Stop the engine and check for any leakage.
Page 70: Steering Cylinder Internal Leakage Test
Steering Cylinder Internal Leakage Test FROM HYDROSTAT TO RESERVOIR STEERING WHEEL STEERING TURNED FOR VALVE RIGHT TURN LOOK FOR LEAKAGE STEERING CYLINDER (FULLY EXTENDED) Figure 22 Hydraulic System Page 5 - - 24 Groundsmaster 3280--D/3320...
Page 71 Procedure for Steering Cylinder Internal Leakage 4. Turn the steering wheel for a right turn (clockwise) so Test: the steering cylinder rod is fully extended. The steering cylinder internal leakage test should be 5. Remove hydraulic hose from the fitting on the rod performed if a steering problem is identified.
Page 72: Charge Pump Flow Test
Charge Pump Flow Test (Using Tester With Pressure Gauges and Flow Meter) The charge pump flow test should be performed if a hy- IMPORTANT: The charge pump is a positive dis- draulic problem is identified that affects both the steering placement pump.
Page 73: Adjustments
Adjustments Traction Pedal Friction Wheel The traction pedal friction wheel is designed to reduce transmission oscillation caused by rapid back and forth foot movements against the traction pedal. This is most noticeable when operating over bumpy terrain. Occasionally inspect the friction wheel surface that con- tacts the traction pedal (Fig.
Page 74: Service And Repairs
Service and Repairs General Precautions for Removing and Installing Hydraulic System Components Before Repair or Replacement of Components After Repair or Replacement of Components 1. Before removing any parts from the hydraulic sys- 1. Check oil level in the hydraulic reservoir (front axle) tem, park machine on a level surface, engage parking and add correct oil if necessary (see Traction Unit Oper- brake, lower cutting deck (or implement) and stop en-...
Page 75: Flush Hydraulic System
Flush Hydraulic System IMPORTANT: Flush the hydraulic system any time 8. Make sure traction pedal is in neutral and the P.T.O. there is a severe component failure or the system is switch is off. Turn ignition key switch to start; engage contaminated (oil appears milky or black or con- starter for ten (10) seconds to prime hydraulic pump.
Page 76: Hydraulic System Start--Up
Hydraulic System Start- -up NOTE: When initially starting the hydraulic system with 7. Make sure traction pedal is in neutral and the P.T.O. new or rebuilt components such as pumps or lift cylin- switch is off. Turn ignition key switch to start; engage ders, it is important that this start--up procedure be used.
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Page 78: Transmission Drive Shaft
Transmission Drive Shaft RIGHT FRONT 80 to 100 in- -lb (9.0 to 11.3 N- -m) Loctite #242 Figure 26 1. Drive shaft 6. Cap screw 10. Cap screw 2. Conelock nut 7. Square head screw (2 used) 11. Transmission 3. Flat washer 8.
Page 79 2. Attach the drive shaft directly to the engine hub to al- 2. Insert coupling spacers (item 8) into rubber cou- low verification of drive shaft alignment. plings. Position drive shaft assembly to engine and pump hubs. 3. Loosen square head screws (item 7) that secure pump hub to transmission input shaft.
Page 80: Hydrostatic Transmission
Hydrostatic Transmission RIGHT FRONT Loctite #242 Figure 28 1. Cap screw 18. Pump lever 35. Adapter 2. Cap screw (3 used) 19. Cotter pin 36. Plug 3. Lock washer (4 used) 20. Flat washer 37. O- -ring 4. Flat washer 21.
Page 81 Removal (Fig. 28) 11. Remove and discard gasket (item 9). Clean gasket surfaces of transmission and front axle. 1. Park the machine on a level surface, engage parking brake, lower cutting deck (or implement) and stop en- 12.If necessary, remove hydraulic fittings from trans- gine.
Page 82 8. Slide traction rod (item 50) to pump lever and secure 11. Install hydraulic hoses to fittings on transmission in with flat washer (item 20) and cotter pin (item 19). positions noted during disassembly. 9. Check transmission drive shaft alignment and adjust 12.Check hydraulic fluid level in reservoir (front axle) if necessary (see Transmission Drive Shaft in this sec- and adjust as required (see Traction Unit Operator’s...
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Page 84: Hydrostatic Transmission Service
Hydrostatic Transmission Service Figure 29 1. Retaining ring 20. Piston (pump) (9 used per block) 39. Center section 2. Trunnion shaft 21. O-ring 40. Pipe plug (4 used) 3. Flat washer 22. Check valve 41. O- -ring 4. Roller bearing 23.
Page 85: Hydrostatic Transmission Neutral Arm Assembly
Hydrostatic Transmission Neutral Arm Assembly 28 to 36 in- -lb (3.3 to 4.1 N- -m) 71 to 89 in- -lb (8 to 10 N- -m) 71 to 89 in- -lb (8 to 10 N- -m) 15 to 17 ft- -lb (20 to 24 N- -m) Figure 30 1.
Page 86: Lift Cylinder
Lift Cylinder RIGHT FRONT Figure 32 1. Lift cylinder 8. Hose stem 15. Hydraulic tee fitting 2. Cap screw 9. Cotter pin 16. O- -ring 3. O- -ring 10. Cylinder pin 17. Test port 4. Hydraulic fitting 11. Hydraulic hose 18.
Page 87 Removal (Fig. 32) Installation (Fig. 32) 1. Park the machine on a level surface, engage the 1. Coat new o--rings lightly with clean hydraulic oil. parking brake, lower the cutting deck (or implement) and Install hydraulic fittings with new o--rings to the lift cylin- stop the engine.
Page 88: Steering Control Valve
Steering Control Valve 20 to 26 ft- -lb (27.1 to 35.3 N- -m) RIGHT FRONT Figure 33 1. Tower panel 13. Steering control valve 25. Friction disc 2. Phillips head screw (6 used) 14. Flange nut 26. Flat washer 3. Nut retainer (6 used) 15.
Page 89 Removal (Fig. 33) Installation (Fig. 33) 1. Park the machine on a level surface, engage the 1. Slide steering control valve onto steering column. parking brake, lower the cutting deck (or implement) and Secure steering control valve to steering column with stop the engine.
Page 90: Steering Control Valve Service
Steering Control Valve Service 20 to 24 ft- -lb (27 to 33 N- -m) Figure 35 1. Sleeve 9. Dust seal ring 16. Outer gearwheel 2. Cross pin 10. Housing 17. End cover 3. Ring 11. Cardan shaft 18. O- -ring (5 used) 4.
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Page 92: Steering Cylinder (2 Wheel Drive)
Steering Cylinder (2 Wheel Drive) 130 to 150 ft- -lb (176 to 203 N- -m) RIGHT FRONT 130 to 150 ft- -lb (176 to 203 N- -m) Figure 36 1. Steering cylinder 6. Cap screw 10. Steering pivot 2. O- -ring 7.
Page 93 Removal (Fig. 36) 2. Position steering cylinder to machine. Make sure to place spacer ring (item 13) and washer (item 9) in loca- 1. Park the machine on a level surface, engage the tions noted during removal (Fig. 37). parking brake, lower the cutting deck (or implement) and stop the engine.
Page 94: Steering Cylinder Service (2 Wheel Drive)
Steering Cylinder Service (2 Wheel Drive) Figure 38 1. Grease fitting 6. O- -ring 10. O- -ring 2. Piston rod 7. O- -ring 11. Lock nut 3. Wiper 8. Piston 12. Barrel 4. Gland 9. Seal 13. Grease fitting 5. Seal Disassembly (Fig.
Page 95 3. Inspect head, piston rod and piston for excessive pit- 4. Install piston onto the rod being careful not to dam- ting, scoring and wear. Replace any worn or damaged age o--ring. Install lock nut onto the rod and tighten. parts.
Page 96: Steering Cylinder (4 Wheel Drive)
Steering Cylinder (4 Wheel Drive) 70 to 90 ft- -lb (95 to 122 N- -m) 37 to 42 ft- -lb (50 to 57 N- -m) RIGHT FRONT Figure 39 1. Steering cylinder 8. Grease fitting 15. Cylinder support bracket 2. O- -ring 9.
Page 97 Removal (Fig. 39) Installation (Fig. 39) 1. Park the machine on a level surface, engage the 1. Coat new o--rings lightly with clean hydraulic oil. If re- parking brake, lower the cutting deck (or implement) and moved, install hydraulic fittings with new o--rings to the stop the engine.
Page 98: Steering Cylinder Service (4 Wheel Drive)
Steering Cylinder Service (4 Wheel Drive) Figure 40 1. Internal collar 5. Head 9. Uni- -ring 2. Dust seal 6. Rod seal 10. Piston 3. Backup washer 7. Shaft 11. Lock nut 4. O- -ring 8. O- -ring 12. Barrel Disassembly (Fig.
Page 99 Assembly (Fig. 40) 5. Remove shaft from vise. 1. Coat new dust seal, uni--ring, backup washer, rod IMPORTANT: Prevent damage when clamping the seal and all o--rings lightly with hydraulic oil. Install new barrel into a vise; clamp on the pivot end only. Do o--ring and uni--ring to the piston.
Page 100: Lift Control Valve
Lift Control Valve RIGHT FRONT Figure 41 1. Lift control valve 9. Hydraulic hose 16. Flange nut 2. O- -ring 10. Flat washer (2 used) 17. Spacer 3. Hydraulic adapter 11. Cap screw (2 used) 18. Cap screw 4. O- -ring 12.
Page 101 Removal (Figs. 41 and 42) 5. Connect hydraulic hoses to hydraulic fittings on lift control valve. 1. Park the machine on a level surface, engage the parking brake, lower the cutting deck (or implement) and 6. Install fuel tank to machine (see Fuel Tank Installa- stop the engine.
Page 102: Lift Control Valve Service
Lift Control Valve Service 18 to 20 ft- -lb 10 to 15 ft- -lb 18 to 20 ft- -lb (24 to 27 N- -m) (14 to 20 N- -m) (24 to 27 N- -m) Loctite #242 Loctite #242 35 to 40 ft- -lb (47 to 54 N- -m) 35 to 40 ft- -lb (47 to 54 N- -m)
Page 103 9. Remove lockout seat (item 22) with o--ring (item 23) 6. Apply Loctite #242 (or equivalent) to threads of from control valve body. Remove detent plunger (item screws (item 7). 19). 7. Position gasket (item 3) and end cap (item 12) to con- 10.If control valve is equipped with counterbalance trol valve.
Page 104: Counterbalance Valve Manifold (If Equipped)
Counterbalance Valve Manifold (If Equipped) RIGHT FRONT Figure 45 1. Lift control valve 5. O- -Ring 9. Hydraulic hose 2. Hydraulic adapter 6. Counterbalance manifold 10. Flange nut (2 used) 3. Hydraulic tube 7. Cap screw (2 used) 11. Mounting bracket 4.
Page 105 Manifold Service (Fig. 46) 4. Connect hydraulic hoses to hydraulic fittings on manifold. 1. Make sure the manifold is thoroughly cleaned before removing either of the valves. 5. Install fuel tank to machine (see Fuel Tank Installa- tion in Chapter 3 -- Gasoline Engine or Chapter 4 -- Die- IMPORTANT: Use care when handling the hydraulic sel Engine).
Page 106: Oil Cooler (Groundsmaster 3280--D)
Oil Cooler (Groundsmaster 3280- -D) RIGHT FRONT Figure 47 1. Radiator 5. O- -ring 9. Radiator support 2. Lock washer 6. Hydraulic hose 10. Flange nut 3. Hex nut 7. Hydraulic hose 11. Radiator shield 4. Oil cooler 8. Flange head screw Removal (Fig.
Page 107 Chapter 6 Electrical System Table of Contents ELECTRICAL DIAGRAMS ..... Standard Control Module ....SPECIAL TOOLS .
Page 108: Special Tools
The multimeter can test electrical components and cir- cuits for current, resistance, or voltage. Obtain this tool locally. NOTE: Toro recommends the use of a DIGITAL Volt− Ohm−Amp multimeter when testing electrical circuits. The high impedance (internal resistance) of a digital me- ter in the voltage mode will make sure that excess cur- rent is not allowed through the meter.
Page 109 Battery Hydrometer Use the Battery Hydrometer when measuring specific gravity of battery electrolyte. Obtain this tool locally. Figure 4 Groundsmaster 3280−D/3320 Page 6 − 3 Electrical System...
Page 110: Troubleshooting
Troubleshooting For effective troubleshooting and repairs, you must have a good understanding of the electrical circuits and CAUTION components used on this machine (see Chapter 8 − Electrical Diagrams). Remove all jewelry, especially rings and If the machine has any interlock switches by−passed, watches, before doing any electrical trouble- shooting or testing.
Page 111 Starting Problems (continued) Problem Possible Causes Nothing happens when start attempt is made (either PTO switch is ON (pulled out) or is faulty. seat switch OR parking brake must be engaged for Traction pedal is not in neutral position. successful start). Interlock system has problem.
Page 112: General Run And Operating Problems
General Run and Operating Problems Problem Possible Causes Engine continues to run (but should not) when the Seat switch is faulty. traction pedal is depressed with no operator on the Seat switch wiring is loose, corroded or damaged. seat. Traction neutral switch is out of adjustment or faulty. Engine kills when the traction pedal is depressed or Operator is lifting off the seat (seat switch not the P.T.O.
Page 113 General Run and Operating Problems (continued) Problem Possible Causes Engine Continues to run (but should not) when the Seat switch is faulty. PTO switch is ON with no operator in the seat. Seat switch wiring is loose, corroded or damaged. Traction neutral switch is out of adjustment or faulty.
Page 114: Electrical System Quick Checks
Electrical System Quick Checks Battery Test (Open Circuit Test) Use a multimeter to measure the battery voltage. Voltage Measured Battery Charge Level 12.68 v (or higher) Fully charged (100%) Set the multimeter to the DC volts setting. The battery should be at a temperature of 60 to 100 F (16 to 38...
Page 115: Check Operation Of Interlock Switches
Check Operation of Interlock Switches Interlock switch operation is described in the Traction CAUTION Unit Operator’s Manual. The Groundsmaster 3280−D and Groundsmaster 3320 are equipped with a Standard Control Module which monitors interlock switch opera- tion. Information on this Module is described in the Trac- Do not disconnect interlock switches.
Page 116: Component Testing
Component Testing For accurate resistance and/or continuity checks, elec- NOTE: See the Kubota Workshop Manual: 05 Series trically disconnect the component being tested from the Engine (Groundsmaster 3280−D) or Briggs & Stratton/ circuit (e.g. unplug the ignition switch connector before Daihatsu Engine Repair Manual (Groundsmaster 3320) doing a continuity check).
Page 117: Indicator Lights
Indicator Lights Charge Indicator Light The charge indicator light should come on when the igni- tion switch is in the ON position with the engine not run- ning. Also, it should illuminate with an improperly operating charging circuit while the engine is running. Engine Oil Pressure Light The engine oil pressure light should come on when the ignition switch is in the ON position with the engine not...
Page 118: Hour Meter
Hour Meter 1. Connect the positive (+) terminal of a 12 VDC source to the positive (+) terminal of the hour meter. Hobbs 2. Connect the negative (−) terminal of the voltage QUARTZ source to the other terminal of the hour meter. 0 0 0 0 HOURS 3.
Page 119: Temperature Sender
Temperature Sender The temperature sender is attached to the water pump 4. Install sender to the engine housing. housing on the engine. There is a yellow wire attached A. Clean threads of housing and sender thoroughly. to the temperature sender. Apply thread sealant to the threads of the sender.
Page 120: High Temperature Shutdown Switch
High Temperature Shutdown Switch The high temperature shutdown switch is located on the 6. After testing is complete, install switch to the engine water pump housing. There is a blue/white wire at- housing. tached to the shutdown switch. A. Clean threads of housing and switch thoroughly. The Standard Control Module monitors the operation of Apply thread sealant to the threads of the switch.
Page 121: Oil Pressure Switch
Oil Pressure Switch The engine oil pressure switch is located on the engine near the oil filter (Figs.17 and 18). The oil pressure switch is a normally closed switch that opens with pres- sure. On the Groundsmaster 3280−D (diesel engine), the oil pressure switch should open at approximately 8 PSI (0.56 kg/cm On the Groundsmaster 3320 (gasoline engine), the oil...
Page 122: Standard Control Module
Standard Control Module The Groundsmaster 3280−D and Groundsmaster 3320 Control Module Outputs (Fig. 20) are equipped with a Standard Control Module to monitor The Start output LED should be illuminated when the and control electrical components required for safe op- ignition key switch is in the START position with the trac- eration.
Page 123: Traction Neutral Switch
Traction Neutral Switch The traction neutral switch is a normally open proximity switch that closes when the traction pedal is in the neu- tral position. A socket head screw threaded into the hy- drostat neutral return arm acts as the sensing plate for the switch.
Page 124: Seat Switch
Seat Switch The seat switch is normally open and closes when the operator is on the seat. If the traction system or P.T.O. switch is engaged when the operator raises out of the seat, the engine will stop. The seat switch (Fig. 23) and its electrical connector are located directly under the seat.
Page 125: Parking Brake Switch
Parking Brake Switch The switch used for the parking brake is a normally open switch. The switch closes when the parking brake is dis- engaged. The parking brake switch is located under the steering tower cover (Fig. 24). The Standard Control Module monitors the operation of the parking brake switch.
Page 126: P.t.o. Electric Clutch
P.T.O. Electric Clutch An electric clutch is used to engage the P.T.O. The elec- tric clutch is mounted on the engine crankshaft and en- gages when current is applied to the clutch. The clutch also incorporates a magnetic brake to stop clutch rota- tion when the clutch is de−energized.
Page 127: Fuses
Fuses The fuse block is located under the control panel (Fig. 26). Identification and Function The fuses are held in the fuse block. Use Figure 27 to identify each individual fuse and its correct amperage. Each fuse holder has the following function. Fuse 1 (15 Amp): Protects main power circuit to igni- tion switch terminal B Fuse 2 (10 Amp): Protects power circuit from igni-...
Page 128: Fuel Stop Solenoid (Groundsmaster 3280−D)
Fuel Stop Solenoid (Groundsmaster 3280−D) The fuel stop solenoid used on the Groundsmaster 3280−D (diesel engine) must be energized for the diesel engine to run. The solenoid is mounted to the injection pump on the engine (Fig. 30). In Place Testing NOTE: Prior to taking small resistance readings with a digital multimeter, short the test leads together.
Page 129: Glow Controller (Groundsmaster 3280−D)
Glow Controller (Groundsmaster 3280−D) The glow controller used on the Groundsmaster 5. If any of the conditions in Step 3 are not met or power 3280−D (diesel engine) is located under the control to terminal 1 exists and any of the other conditions in panel.
Page 130 Glow Relay (Groundsmaster 3280−D) The glow relay used on the Groundsmaster 3280−D (diesel engine) is attached to the support bracket inside the right side frame near the fuel/water filter (Fig. 33). When energized, the glow relay allows electrical current to the engine glow plugs. Testing NOTE: Prior to taking small resistance readings with a digital multimeter, short the meter test leads together.
Page 131: Fuel Pump (Groundsmaster 3280−D)
Fuel Pump (Groundsmaster 3280−D) The fuel pump used on the Groundsmaster 3280−D (diesel engine) is attached to the support bracket inside the right side frame near the fuel/water filter (Fig. 35). IMPORTANT: When testing fuel pump, make sure that pump is not operated without fuel. DANGER Because diesel fuel is highly flammable, use cau- tion when handling it.
Page 132: Fuel Pump (Groundsmaster 3320)
Fuel Pump (Groundsmaster 3320) The fuel pump used on the Groundsmaster 3320 (gaso- line engine) is attached to the support bracket inside the right side frame near the fuel filter (Fig. 36). IMPORTANT: When testing fuel pump, make sure that pump is not operated without fuel. DANGER Because gasoline is highly flammable, use cau- tion when handling it.
Page 133: Fuel Pump Relay (Groundsmaster 3320)
Fuel Pump Relay (Groundsmaster 3320) The Groundsmaster 3320 uses a relay to energize the fuel pump. The fuel pump relay is attached to the sup- port bracket inside the right side frame near the fuel filter. Testing NOTE: Prior to taking small resistance readings with a digital multimeter, short the meter test leads together.
Page 134: Service And Repairs
(+) cable first. Coat battery posts and cable are explosive, keep open flames and electrical connectors with Battery Terminal Protector (Toro Part sparks away from the battery; do not smoke. No. 107−0392) or petroleum jelly to prevent corrosion.
Page 135: Battery Service
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. − CAUTION When working with batteries, use extreme cau- tion to avoid splashing or spilling electrolyte. Electrolyte can destroy clothing and burn skin or eyes.
Page 136 B. Temperature correct each cell reading. For each G. Take a voltage reading at 15 seconds, then re- F (5.5 C) above 80 F (26.7 C) add 0.004 to the move the load. specific gravity reading. For each 10 F (5.5 C) be- H.
Page 137 2. Determine the charging time and rate using the 3. Following the manufacturer’s instructions, con- manufacturer’s battery charger instructions or the nect the charger cables to the battery. Make sure a good following table. connection is made. 4. Charge the battery following the manufacturer’s Battery Battery Charge Level instructions.
Page 138: P.t.o. Electric Clutch
P.T.O. Electric Clutch Removal (Figs. 39 and 40) 1. Park machine on a level surface, lower cutting deck (or implement), stop engine, engage parking brake and Antiseize remove key from the ignition switch. Lubricant 2. Unplug clutch connector from machine wire harness. 3.
Page 139 Chapter 7 Chassis Table of Contents SPECIFICATIONS ......SERVICE AND REPAIRS ..... . Wheels .
Page 140: Specifications
Specifications Item Description Front Tire Pressure 20 PSI (1.38 bar) (23 x 9.50 − 12, 4 ply, tubeless) Rear Tire Pressure (2 Wheel Drive Machines) 20 PSI (1.38 bar) (16 x 6.50 − 8, 4 ply, tubeless) Rear Tire Pressure (4 Wheel Drive Machines) 20 PSI (1.38 bar) (18 x 6.50−8, 4 ply, tubeless) Front Wheel Lug Nut Torque...
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Page 142: Service And Repairs
Service and Repairs Wheels 75 to 80 ft−lb RIGHT (102 to 108 N−m) FRONT See text for torque Figure 1 1. Rear wheel hub 4. Front wheel lug nut (5 per wheel) 6. Front axle 2. Rear wheel assembly 5. Front wheel assembly 7.
Page 143 Removal (Fig. 1) Installation (Fig. 1) 1. Park machine on a level surface, lower cutting deck 1. Install wheel and secure with five (5) lug nuts. (or implement), stop engine, engage parking brake and 2. Tighten lug nuts evenly in a crossing pattern to the remove key from the ignition switch.
Page 144: Steering Tower Assembly
Steering Tower Assembly 20 to 26 ft−lb (27.1 to 35.3 N−m) Antiseize Lubricant RIGHT FRONT Figure 2 1. Tower panel 13. Steering control valve 25. Friction disc 2. Phillips head screw (6 used) 14. Flange nut 26. Flat washer 3. Nut retainer (6 used) 15.
Page 145 Removal (Fig. 2) Installation (Fig. 2) 1. Park the machine on a level surface, engage the 1. If removed, secure pivot plate (item 27) to steering parking brake, lower the cutting deck (or implement) and column with two (2) cap screws (item 15) and flange nuts stop the engine.
Page 146: Rear Frame And Axle Assembly
Rear Frame and Axle Assembly RIGHT FRONT Figure 3 1. Rear frame & axle assembly (2WD) 5. Lock nut (2 used) 9. Bidirectional clutch 2. Cap screw (2 used) 6. Flange head screw (4 used) 10. Lock washer (6 used) 3.
Page 147 Removal (Fig. 3) Installation (Fig. 3) 1. Park machine on a level surface, lower cutting deck 1. Carefully position rear frame and axle assembly to (or implement), stop engine, engage parking brake and machine frame. remove key from the ignition switch. NOTE: The flange head screws (item 6) used to secure 2.
Page 148: Rear Axle (2 Wheel Drive)
Rear Axle (2 Wheel Drive) 130 to 150 ft−lb (176 to 203 N−m) 75 to 80 ft−lb (102 to 108 N−m) RIGHT FRONT 130 to 150 ft−lb (176 to 203 N−m) Figure 4 1. Rear axle 11. Jam nut 21. Cap screw 2.
Page 149 Removal (Fig. 4) Installation (Fig. 4) 1. Park machine on a level surface, lower cutting deck 1. Thoroughly clean the rear axle pivot pin. Inspect the (or implement), stop engine, engage parking brake and pin for wear or damage and replace if necessary. remove key from the ignition switch.
Page 150: Rear Axle Service (2 Wheel Drive)
Rear Axle Service (2 Wheel Drive) FRONT RIGHT Figure 5 1. Rear axle 10. Thrust washer 18. Tie rod 2. Flange head screw 11. RH spindle 19. Retaining ring 3. Spindle cap 12. Flat washer 20. Thrust washer 4. Retaining ring 13.
Page 151 Axle Pivot Bushings (Fig. 5) 6. Apply grease to the inside and outside of the new bushings. Use an arbor press to install the bushings into The rear axle must be held in place snugly by the axle the top and bottom of the steering pivot. Bushings must pivot pin.
Page 152 Rear Axle Spindle Bushings (Fig. 5) 7. Install two thrust washers (items 10 and 5) onto the spindle shaft and slide the shaft up through the axle The rear wheel spindles must fit snugly in the rear axle. tube. Hold the wheel and spindle shaft assembly in Excessive movement of the spindle in the axle indicates place and install the flat washer(s) (items 7 and 6), thrust that the spindle bushings (item 8) are probably worn and...
Page 153: Rear Wheel Bearings (2 Wheel Drive)
Rear Wheel Bearings (2 Wheel Drive) NOTE: For repair information regarding the rear axle 4. Slide the wheel hub assembly onto the spindle shaft on 4 wheel drive machines, refer to Chapter 8 − Drive and secure it in place with the tab washer and jam nut. Axles.
Page 154: Operator Seat
Operator Seat Figure 8 1. Seat 6. Flange nut (2 used) 11. Socket head screw (4 used) 2. Washer head screw (2 used) 7. Seat Base 12. Flat washer (4 used) 3. Seat adjuster with latch 8. Flange head screw (2 used) 13.
Page 155 Removal (Fig. 8) Installation (Fig. 8) 1. Park machine on a level surface, lower cutting deck 1. Install seat components using Figure 8 as a guide. (or implement), stop engine, engage parking brake and 2. Position seat and seat base to machine. remove key from the ignition switch.
Page 156: Mechanical Seat Suspension
Mechanical Seat Suspension 35 36 Figure 9 1. Upper housing 17. Lower shock bushing (2 used) 33. Extension spring 2. Weight adjust knob 18. Stop bumper 34. Bumper 3. Lower housing 19. Height adjust rod 35. Spacer washer (2 used) 4.
Page 157 Removal (Fig. 9) 1. Park machine on a level surface, lower cutting deck (or implement), stop engine, engage parking brake and remove key from the ignition switch. 2. Remove seat and seat suspension from machine (see Operator Seat in this section). 3.
Page 158: Pneumatic Seat Suspension
Pneumatic Seat Suspension 168 to 264 in−lb (19.0 to 29.8 N−m) 40 to 50 in−lb (4.5 to 5.7 N−m) 108 in−lb (12.2 N−m) 40 to 50 in−lb 84 to 132 in−lb (4.5 to 5.7 N−m) (9.5 to 14.9 N−m) Figure 11 1.
Page 159 Removal (Fig. 11) 1. Park machine on a level surface, lower cutting deck (or implement), stop engine, engage parking brake and remove key from the ignition switch. 2. Remove seat and seat suspension from machine (see Operator Seat Removal in this section). 3.
Page 160: Lift Arms
Lift Arms RIGHT FRONT Figure 13 1. Carrier bracket 9. Hair pin 16. Roll pin 2. Cap screw 10. Clevis pin 17. Roll pin 3. Flat washer 11. Cap screw 18. Pivot pin 4. Hair pin 12. Lock nut 19. Cotter pin 5.
Page 161 Removal (Fig. 13) 1. Park machine on a level surface, lower cutting deck (or implement), stop engine, engage parking brake and remove key from the ignition switch. 2. Remove cutting deck (or implement) from lift arm (see Cutting Unit Operator’s Manual). 3.
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Page 163 Chapter 8 Drive Axles Table of Contents SPECIFICATIONS ......Rear Axle (4 Wheel Drive) .
Page 164: Specifications
Specifications Item Description Front Axle (Hydraulic Reservoir) Oil See Traction Unit Operator’s Manual Front Axle (Hydraulic Reservoir) Capacity 6 Qts. U.S. (5.7 L) (see Traction Unit Operator’s Manual for checking procedure) 4WD Rear Axle Lubricant GL−5 API, SAE 80W−90 gear lube 4WD Rear Axle Lubricant Capacity 3.1 quarts (2.9 liters) (see Traction Unit Operator’s Manual for checking procedure)
Page 165: General Information
General Information Front Axle The Groundsmaster 3280−D and 3320 use a Dana Axle, model GT-20. The differential and axle form the fi- nal drive of the power train (Fig. 1). The differential has a heavy duty case with automotive type, cut gears that rotate on tapered roller bearings. Single-row, pre-set, tapered roller bearings are used on the outside ends of the axle shafts.
Page 166: Special Tools
Special Tools Order special tools from your Toro Distributor. Differential Gear Holder (TOR4027) Remove gear cover from right hand side of differential and bolt this tool in place to lock spur gear in position when removing nut that secures pinion coupler.
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Page 168: Service And Repairs
Service and Repairs Brake Service Figure 5 1. Lock nut 7. Return spring 13. Brake cable link 2. Brake drum 8. Dust shield 14. Brake lever 3. Brake shoe set 9. Brake cable 15. Brake spider 4. Pivot nut 10. Clevis pin 16.
Page 169 2. Position brake return springs (Items 7 and 11) to brake shoes. CAUTION 3. Position brake lever to brake shoes. Secure brake le- ver to shoes with retainers (item 12). Be careful when removing adjuster and brake re- turn springs. The springs are under tension and 4.
Page 170: Front Axle Shafts And Bearings
Front Axle Shafts and Bearings 16 to 20 ft−lb (22 to 27 N−m) Figure 6 1. Lock nut 11. Bearing 20. Brake cable link 2. Brake drum 12. Bearing retainer 21. Brake lever 3. Axle shaft 13. Inner axle oil seal 22.
Page 171 5. Remove the lock nut (item 1) that retains the brake drum. Slide the brake drum from machine (Fig. 7). NOTE: If the brake drum is severely worn, it may be necessary to loosen the brake shoes before removing the brake drum. Loosen the brake shoes by turning the star wheel adjuster (item 7) inside the brake drum as- sembly.
Page 172 8. Remove and discard the inner axle shaft seal (Fig. 10). Figure 10 9. Center punch and drill a 1/4 inch (6 mm) hole (approximate) into the outside of the bearing retainer to a depth of about 3/4 the thickness of the retainer (Fig. 11).
Page 173 11. Remove the bearing from axle shaft. 12.Remove and discard the outer seal plate. 13.Inspect all components for wear and damage (Fig. 13). Replace the axle shaft if the seal has grooved the axle surface more that 1/64 inch (0.40 mm). Figure 13 Assembly (Fig.
Page 174 Be careful not to damage the oil seal and bearing (Fig. 17). NOTE: Liquid Gasket Kit (Toro P/N 92-8775) includes Loctiter Ultra Gray Silicone (gasket eliminator) and ap- plication instructions.
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Page 176: Front Axle
Front Axle 75 to 80 ft−lb (102 to 108 N−m) RIGHT FRONT Figure 19 1. Cap screw 10. Front axle assembly 19. Axle shim (as needed) 2. Cap screw (3 used) 11. Jam nut 20. Hydraulic fitting 3. Lock washer (4 used) 12.
Page 177 6. Remove lift arms from machine (See Lift Arm Re- 3. Connect the brake cables to the brake actuating lev- moval in the Service and Repairs section of Chapter 7 ers on each brake (Fig. 20). Secure brake cables to axle −...
Page 178: Front Axle Service
Front Axle Service 70 to 90 ft−lb 25 to 40 in−lb (95 to 122 N−m) (3.0 to 4.5 N−m) RIGHT FRONT 30 to 45 ft−lb (41 to 61 N−m) 18 to 23 ft−lb (24 to 31 N−m) 45 to 65 ft−lb (61 to 88 N−m) Figure 21 1.
Page 179 Disassembly (Fig. 21) 1. Remove the right and left-hand axle assemblies. (See Front Axle Shafts and Bearings Disassembly in this section). 2. Remove the eight (8) housing cap screws, hex nuts and lock washers that secure axle housings. Separate the front and rear axle housings (Fig. 22). Clean all gas- ket material from the housing mating surfaces.
Page 180 5. Remove the ring gear cap screws. Using a hard wooden block and a hammer, drive the ring gear from the differential case. Be prepared to protect the ring gear when removing it from the differential case; this will avoid damage of the ring gear teeth (Fig. 25). NOTE: It is recommended that whenever the ring gear cap screws are removed, they are to be replaced with new screws.
Page 181 8. While supporting the differential in a vise, drive the pinion mate shaft from the differential with a long drift punch (Fig. 28). Figure 28 9. To remove the side gears and pinion mate gears, ro- tate the side gears. This will allow the pinion mate gears to turn to the opening of the case (Fig.
Page 182 11. Install differential gear holder to carrier to retain spur gear (see Special Tools). Remove nut, washer, flange coupler and seal from the pinion shaft (Fig. 31). Figure 31 1. Nut 5. Shim 2. Washer 6. Outer bearing cone 3. Flange coupler 7.
Page 183 15.Clamp the inner pinion bearing with a universal bear- ing remover (Fig. 34). Position the unit in a press and carefully push the drive pinion out of the bearing. IMPORTANT: DO NOT allow the pinion to drop on the floor during removal as damage will result. Figure 34 16.To remove the outer pinion bearing cup, position the housing in a press.
Page 184 Assembly (Fig. 21) 1. Inspect the differential parts for damage before as- sembling. A. If any bearings are damaged they must be re- placed with new ones. Replace all removed bear- ings. B. Check the ring, pinion and spur gear for abnormal wear or damage;...
Page 185 IMPORTANT: Correct engagement between ring gear and pinion gear is critical to axle performance and durability. NOTE: A complete Upper Housing Assembly for Differ- ential repairs is available. Using this assembly elimi- nates the need for shimming to establish the correct contact pattern between the ring and pinion gears.
Page 186 5. Install the correct bearing shims and a new inner bearing cup using a press plate of proper diameter. Push the bearing into the housing until it bottoms out against the shims (Fig. 40). NOTE: Pinion bearing shims are available in 0.003 in. (0.08 mm), 0.005 in.
Page 187 8. Install the outer bearing spacer with the chamfer to- wards the pinion splines and position the new outer bearing cone on the pinion shaft (Fig. 43). Figure 43 9. With a hollow press sleeve of proper diameter, press on the outer bearing cone race until the drive pinion seats in the carrier and a slight drag is felt when the gear is rotated by hand (Fig.
Page 188 14.Make sure that all gasket material has been removed from the mating surfaces of the spur gear cover and the carrier before assembly. Apply Permatex No. 2 or silicone sealant to mating sur- face of spur gear cover and carrier. Install the spur gear cover (Fig.
Page 189 17.Assemble the lock pin. Drive the pin to the approxi- mate center location of the pinion mate shaft. Peen the metal of the case to lock the pin in place (Fig. 49). Figure 49 18.Position the ring gear onto the differential case and thread new cap screws into the ring gear.
Page 190 20.Assemble new differential bearing cups onto differ- ential bearing cones. Seat differential assembly with drive gear on proper side of carrier into carrier bearing cradles. NOTE: This application requires that the ring gear teeth face toward the spur gear cover. 21.The bearing cradles are designed to apply a slight preload to the bearings.
Page 191: Ring To Pinion Gear Engagement (Front Axle)
Ring to Pinion Gear Engagement (Front Axle) Final position of front axle pinion is verified by using the PROFILE gear contact pattern method as described in the follow- TOP LAND ing procedure. GEAR TOOTH DEFINITIONS (Fig. 55): Toe - the portion of the tooth surface at the end to- LENGTHWISE wards the center.
Page 192 Example 3: Backlash incorrect. Thinner pinion position shim required. Adjust backlash to match (Fig. 59). DRIVE SIDE COAST SIDE Heel Heel GEAR PATTERN MOVEMENT SUMMARY: A. Decreasing backlash moves the ring gear closer to the pinion. Drive pattern (convex side of gear) moves lower and toward the toe.
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Page 194: Rear Axle Drive Shaft (4 Wheel Drive)
Rear Axle Drive Shaft (4 Wheel Drive) ALIGN YOKES RIGHT FRONT Figure 60 1. Bidirectional clutch 5. Grease fitting 8. Lock washer (6 per flange) 2. Yoke flange 6. Cross and bearing kit 9. Socket head screw (6 per flange) 3.
Page 195: Rear Axle Drive Shaft Cross And Bearing Service (4 Wheel Drive)
Rear Axle Drive Shaft Cross and Bearing Service (4 Wheel Drive) 1. Remove rear axle drive shaft from vehicle (see Rear Axle Drive Shaft (4 Wheel Drive) Removal in this sec- tion). 2. Remove snap rings that secure bearings in yokes. IMPORTANT: Yokes must be supported when re- moving and installing bearings to prevent damage.
Page 196: Rear Axle (4 Wheel Drive)
Rear Axle (4 Wheel Drive) 34 to 42 ft−lb (46 to 57 N−m) Loctite #242 90 to 120 ft−lb (122 to 163 N−m) 70 to 90 ft−lb (95 to 122 N−m) Antiseize RIGHT Lubricant FRONT 70 to 90 ft−lb (95 to 122 N−m) Figure 62 1.
Page 197 Removal (Fig. 62) Installation (Fig. 62) 1. Park machine on a level surface, lower cutting deck 1. Position rear axle support to axle. Install thrust wash- (or implement), stop engine, engage parking brake and ers (items 32 and 33) between axle boss and axle sup- remove key from the ignition switch.
Page 198: Bevel Gear Case And Axle Case (4 Wheel Drive Axle)
Bevel Gear Case and Axle Case (4 Wheel Drive Axle) The following procedures assume the 4WD rear axle as- 35 to 41 ft−lb sembly has been removed from the machine. (47 to 56 N−m) Removal 1. Remove the mounting screws, nuts and lock wash- ers.
Page 199 5. Remove the knuckle pin mounting screws and the knuckle pin. Remove and discard o−ring (Fig. 66). 17 to 20 ft−lb (23 to 27 N−m) 6. While holding the bevel gear case, lightly tap the up- per end of the bevel gear shaft out of the upper bearing Threadlocking and upper bevel gear.
Page 200 Installation 1. Coat new shaft seals with grease and install in axle case and bevel gear case as shown (Fig. 68). Figure 68 1. Axle case 3. Shaft seal 2. Bevel gear case 2. Install the lower bevel gear and bevel gear shaft in the axle case cover.
Page 201 5. Determine necessary quantity of support shims. 57 to 67 ft−lb A. Lubricate the axle case support bushing with a (77 to 91 N−m) thin coat of grease and slide axle case support onto knuckle pin. B. Position support shims that were removed during VERTICAL disassembly between axle case support and axle ENDPLAY...
Page 202: Differential Shafts (4 Wheel Drive Axle)
9. Remove the bevel gear case/axle case assembly NOTE: Axle bearing shims are available in 0.008 in. from the axle support. Coat a new O-ring with grease (0.20 mm), 0.012 in. (0.30 mm) and 0.020 in. (0.50 mm) and temporarily install the axle cover assembly. Position thickness.
Page 203: Axle Shafts (4 Wheel Drive Axle)
Axle Shafts (4 Wheel Drive Axle) The following procedures assume the 4WD rear axle as- 17 to 20 ft−lb sembly has been removed from the machine. (23 to 27 N−m) Removal 1. Remove the axle cover mounting screws. Remove the axle cover from the axle case as an assembly (Fig.
Page 204: Input Shaft/Pinion Gear (4 Wheel Drive Axle)
Input Shaft/Pinion Gear (4 Wheel Drive Axle) The following procedures assume the 4WD rear axle as- sembly has been removed from the machine. Removal (Fig. 78) 1. Remove input shaft/pinion gear assembly from the axle support. Remove the shims and bearing case O- ring.
Page 205 9. Use a depth gauge to measure the distance from the end face of the input shaft/pinion gear to the mating sur- face of the bearing case. Subtract the “Design Cone Center Distance” from this distance to determine initial shim thickness (Fig. NO TAG). Design Cone Center Distance...
Page 206: Differential Gear Assembly (4 Wheel Drive Axle)
Differential Gear Assembly (4 Wheel Drive Axle) The following procedures assume the 4WD rear axle as- 35 to 41 ft−lb sembly has been removed from the machine. (47 to 56 N−m) Removal 1. Remove bevel gear case/axle case assemblies (see Bevel Gear Case/Axle Case Assembly in this section of this manual).
Page 207 Inspection 1. Measure the differential side gear O.D. and the dif- ferential case I.D. to determine the side gear to case clearance (Fig. 85). Replace components as necessary. SIDE GEAR TO CASE CLEARANCE: 0.002 to 0.012 in. (0.05 to 0.30 mm) SIDE GEAR O.D.
Page 208 Installation 1. If the ring gear was removed from the differential case, use medium strength Loctite thread locker and tighten the mounting screws from 22 to 25 ft-lb (30 to 34 N−m). 2. Apply molybdenum disulfide lubricant (Three Bond 1901 or equivalent) to the splines and bearing surfaces of the differential pinion gears, pinion washers and side gears.
Page 209: Pinion Gear To Ring Gear Engagement (4 Wheel Drive Axle)
Pinion Gear to Ring Gear Engagement (4 Wheel Drive Axle) The final position of the pinion gear is verified by using PROFILE the gear contact pattern method as described in the fol- TOP LAND lowing procedure. GEAR TOOTH DEFINITIONS (Fig. 89): Toe −...
Page 210 Gear Pattern Movement Summary Heel Contact Base Contact Every gear has a characteristic pattern. The illustrations show typical patterns only and explain how patterns shift as gear location is changed. 1. If contact is toward the heel or base of the gear (Fig. 92): A.
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Page 212: Bidirectional Clutch (4 Wheel Drive)
Bidirectional Clutch (4 Wheel Drive) RIGHT FRONT Anti−seize Lubricant Loctite #242 Figure 94 1. Clutch locator adapter 5. Spacer 9. Lock washer (6 used) 2. Cap screw (2 used) 6. Flat washer 10. Socket head screw (6 used) 3. Cap screw (2 used) 7.
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Page 214: Bidirectional Clutch Service (4 Wheel Drive)
Bidirectional Clutch Service (4 Wheel Drive) Hylomar Jointing Compound DRIVE SHAFT REAR AXLE 14 ft−lb (19 N−m) Figure 95 1. End plate 7. Phillips head screw w/o−ring 13. Oil seal 2. Socket head screw (6 used) 8. Hub 14. Bearing Housing 3.
Page 215 Chapter 9 P.T.O. System Table of Contents SERVICE AND REPAIRS ..... . P.T.O. Drive Belt ......P.T.O.
Page 216: Service And Repairs
Service and Repairs P.T.O. Drive Belt FRONT RIGHT Figure 1 1. Electric clutch 6. P.T.O. shaft pulley 11. Mounting bracket 2. P.T.O. drive belt 7. P.T.O. tension shaft 12. Spacer 3. Cap screw 8. P.T.O. shaft 13. Compression spring 4. Lock washer 9.
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Page 218: P.t.o. Drive Shaft
P.T.O. Drive Shaft RIGHT FRONT Figure 2 1. P.T.O. shaft 6. U−joint kit (cross and bearings) 11. Roll pin 2. End yoke 7. Flat washer (2 used) 12. Cap screw (2 used per end yoke) 3. Lock nut (2 used per end yoke) 8.
Page 219 Removal (Fig. 5) 3. Secure end yokes of P.T.O. drive shaft. 1. Park machine on a level surface, lower cutting deck A. Install cotter pin (item 14) in end yoke (item 2) and (or implement), stop engine, engage parking brake and P.T.O.
Page 220: P.t.o. Drive Shaft Cross And Bearing Service
P.T.O. Drive Shaft Cross and Bearing Service 1. Remove P.T.O. drive shaft from vehicle (see P.T.O. Drive Shaft Removal in this section). 2. Remove snap rings that secure bearings in yokes. IMPORTANT: Yokes must be supported when re- moving and installing bearings to prevent damage. 3.
Page 221 This page is intentionally blank. Groundsmaster 3280−D/3320 Page 9 − 7 P.T.O. System...
Page 222: P.t.o. Shaft
P.T.O. Shaft LOCTITE #242 ANTISEIZE LUBRICANT RIGHT FRONT ANTISEIZE LUBRICANT Figure 5 1. Cap screw 8. Cap screw (2 used) 15. Lock nut (2 used) 2. P.T.O. drive belt 9. Flange bearing 16. P.T.O. shaft 3. Woodruff key 10. Grease fitting 17.
Page 223 5. Remove cap screw and washer that secure pulley to 4. Secure P.T.O. bearing bracket to frame with four (4) P.T.O. shaft. Using a puller, remove pulley from P.T.O. cap screws and lock washers (Fig. 6). shaft. Locate and retrieve woodruff key. 5.
Page 224: Align P.t.o. Pulley To Electric Clutch Pulley
Align P.T.O. Pulley to Electric Clutch Pulley Check Pulley Alignment Adjust Pulley Alignment 1. Park machine on a level surface, lower cutting deck 1. With the P.T.O. belt installed, adjust the belt tension (or implement), stop engine, engage parking brake and screw until the compression spring begins to compress.
Page 225 Chapter 10 Cutting Units Table of Contents GENERAL INFORMATION ..... SERVICE AND REPAIRS ..... . TROUBLESHOOTING .
Page 226: General Information
General Information Several cutting units are available for the Grounds- master 3280−D and 3320. Refer to the Cutting Unit Op- erator’s Manual for specifications and optional accessories for the cutting unit used on your Grounds- master. Page 10 − 2 Cutting Units Groundsmaster 3280−D/3320...
Page 227: Troubleshooting
Troubleshooting There are a number of factors that can contribute to un- Remember that the “effective” or actual height−of−cut satisfactory quality of cut, some of which may be turf depends on cutting unit weight, tire pressures, hydraulic conditions. Turf conditions such as excessive thatch, counterbalance settings and turf conditions.
Page 228: Adjustments
Adjustments CAUTION Never install or work on the cutting deck or lift arms with the engine running. Always stop en- gine and remove ignition key first. See the Cutting Unit Operator’s Manual for adjustment procedures for the cutting unit on the Groundsmaster 3280−D and 3320.
Page 229 This page is intentionally blank. Groundsmaster 3280−D/3320 Page 10 − 5 Cutting Units...
Page 230: Service And Repairs
Service and Repairs CAUTION WARNING Do not start the engine and engage the P.T.O. Never install or work on the cutting deck or lift switch when the P.T.O. drive shaft is discon- arms with the engine running. Always stop en- nected from the cutting deck (or implement).
Page 231 Removal (Fig. 1) Installation (Fig. 1) 1. Park machine on a level surface with cutting deck 1. Install removed idler components using Figure 1 as lowered. Stop engine, engage parking brake and re- a guide. Secure idler arm assembly to cutting deck with move key from the ignition switch.
Page 232: Blade Spindle
Blade Spindle RIGHT FRONT 85 to 110 ft−lb (115 to 149 N−m) Figure 2 Drive pulley Flange nut (8 per spindle) Anti−scalp cup Drive belt Cutting blade Cutting deck Flange head screw (8 per spindle) Blade bolt 10. Idler pulley Drive spindle assembly Page 10 −...
Page 233 Removal (Fig. 2) Installation (Fig. 2) 1. Park machine on a level surface with cutting deck 1. Position spindle on cutting deck noting orientation of raised. Stop engine, engage parking brake and remove grease fitting (Fig. 3). Secure spindle assembly to deck key from the ignition switch.
Page 234: Blade Spindle Service
Blade Spindle Service Disassembly (Fig. 4) 1. Loosen and remove lock nut from top of spindle shaft. NOTE: Early production spindle assemblies included a 130 to 150 ft−lb v−ring seal (item 4) which has been found to be unnec- (176 to 203 N−m) essary.
Page 235 3. Using an arbor press, push the bearing cups into the top and bottom of the spindle housing. The top bearing PRESS cup must contact the outer spacer previously installed, and the bottom bearing cup must contact the snap ring. Make sure that the assembly is correct by supporting the first bearing cup and pressing the second against it (Fig 4.
Page 236: Gearbox
Gearbox 175 in−lb RIGHT (19.8 N−m) FRONT Figure 9 Drive pulley Carriage screw (3 used) 14. Flange nut Drive belt Deck gearbox mounting plate 15. Gearbox assembly Spindle assembly 10. Woodruff key 16. P.T.O. drive shaft end yoke Set screw (2 used) 11.
Page 237 4. Disconnect P.T.O. drive shaft from gearbox (see 9. Connect P.T.O. drive shaft to gearbox (see P.T.O. P.T.O. Drive Shaft Removal in Service and Repairs sec- Drive Shaft Installation in Service and Repairs section tion of Chapter 9 − P.T.O. System). of Chapter 9 −...
Page 238: Castor Forks And Wheels
Castor Forks and Wheels Figure 12 Castor arm (RH shown) Castor tire 17. Grease fitting Cap screw (5 used per arm) 10. Wheel rim half 18. Spacer Cap screw 11. Plate 19. Retaining ring Inner bearing spacer 12. Flange nut (4 used) 20.
Page 239 Disassembly (Fig. 12) 2. If bearings were removed from wheel hub: 1. Disassemble castor forks and wheels as required A. Press first bearing into hub until it contacts shoul- using Figure 12 as a guide. der of hub. Assembly (Fig. 12) B.
Page 240: Cutting Deck Rollers And Skids
Cutting Deck Rollers and Skids RIGHT FRONT Figure 13 Cutting deck Roller spacer 11. Cap screw Carriage screw Roller 12. Roller Flange nut Flange nut 13. Roller shaft LH skid Lock nut 14. Flange head screw Cap screw 10. Roller (2 used) 15.
Page 241 Chapter 11 Electrical Diagrams Table of Contents ELECTRICAL SCHEMATICS Groundsmaster 3280−D ..... Groundsmaster 3320 ......GROUNDSMASTER 3280−D CIRCUIT DIAGRAMS Glow Plug Circuit .
Page 242 This page is intentionally blank. Electrical Diagrams Page 11 − 2 Groundsmaster 3280−D/3320...
Page 243: Electrical Schematics
Groundsmaster 3280−D Electrical Schematic All relays and solenoids are shown as de−energized. All ground wires are black. Page 11 − 3...
Page 244: Groundsmaster 3320
SEAT SWITCH Groundsmaster 3320 Electrical Schematic All relays and solenoids are shown as de−energized. All ground wires are black. Page 11 − 4...
Page 245: Glow Plug Circuit
(IN RUN POSITION) (ENERGIZED) Groundsmaster 3280−D Glow Plug Circuit Power Current Control Current Indicator/Gauge Current Page 11 − 5...
Page 246: Crank Circuit
(PARKING BRAKE ON) (IN START POSITION) (SEAT OCCUPIED) (IN NEUTRAL) (PTO OFF) (ENERGIZED) Groundsmaster 3280−D Crank Circuit Power Current Control Current Indicator/Gauge Current Page 11 − 6...
Page 247: Run (Transport) Circuit
(PARKING BRAKE OFF) (SEAT OCCUPIED) (IN RUN POSITION) (NOT IN NEUTRAL) (PTO OFF) (NOT ENERGIZED) Groundsmaster 3280−D Run (Transport) Circuit Power Current Control Current Indicator/Gauge Current Page 11 − 7...
Page 248: Run (Mow) Circuit
(PARKING BRAKE OFF) (SEAT OCCUPIED) (IN RUN POSITION) (NOT IN NEUTRAL) (PTO ON) (NOT ENERGIZED) Groundsmaster 3280−D Run (Mow) Circuit Power Current Control Current Indicator/Gauge Current Page 11 − 8...
Page 249: Crank Circuit
(IN NEUTRAL) (IN START POSITION) (PARKING BRAKE ON) (SEAT OCCUPIED) (PTO OFF) (ENERGIZED) Groundsmaster 3320 Crank Circuit Power Current Control Current Indicator/Gauge Current Page 11 − 9...
Page 250: Run (Transport) Circuit
(NOT IN NEUTRAL) (IN RUN POSITION) (PARKING BRAKE OFF) (SEAT OCCUPIED) (PTO OFF) (ENERGIZED) Groundsmaster 3320 Run (Transport) Circuit Power Current Control Current Indicator/Gauge Current Page 11 − 10...
Page 251: Run (Mow) Circuit
(NOT IN NEUTRAL) (IN RUN POSITION) (PARKING BRAKE OFF) (SEAT OCCUPIED) (PTO ON) (ENERGIZED) Groundsmaster 3320 Run (Mow) Circuit Power Current Control Current Indicator/Gauge Current Page 11 − 11...
Page 252 Groundsmaster 3280−D Main Wire Harness Drawing (Serial Numbers below 260000000) Page 11 − 12 Rev. A...
Page 253 GREEN GRAY BLUE/WHITE BLACK BLUE YELLOW BLACK BLACK BLACK BLACK BLACK FUSIBLE LINK BLACK WHITE RED/BLACK RED/BLACK PINK WHITE/BLACK BLACK RED/BLACK BLACK PINK PINK PINK PINK WHITE ORANGE PINK YELLOW PINK VIOLET ORANGE PINK BLACK/WHITE ORANGE Groundsmaster 3280−D Main Wire Harness Diagram (Serial Numbers below 260000000) Page 11 −...
Page 254 SN 280000001 SN 260000001 AND UP TO 270999999 Groundsmaster 3280−D Main Wire Harness Drawing (Serial Numbers above 260000000) Page 11 − 14 Rev. A...
Page 255 GREEN GRAY BLUE/WHITE BLACK BLUE YELLOW BLACK BLACK BLACK BLACK BLACK FUSIBLE LINK BLACK WHITE RED/BLACK RED/BLACK PINK WHITE/BLACK BLACK RED/BLACK BLACK PINK BLACK PINK PINK PINK PINK WHITE ORANGE PINK YELLOW PINK VIOLET ORANGE PINK BLACK/WHITE ORANGE Groundsmaster 3280−D Main Wire Harness Diagram (Serial Numbers above 260000000) Page 11 −...
Page 256: Main Wire Harness Drawing (Serial Numbers Below 260000000)
Groundsmaster 3320 Main Wire Harness Drawing (Serial Numbers below 260000000) Page 11 − 16 Rev. A...
Page 257 GRAY BLUE/WHITE BLACK BLUE YELLOW BLACK BLACK BLACK BLACK BLACK BLACK WHITE/BLACK BLACK PINK PINK BROWN RED/BLACK PINK PINK PINK WHITE YELLOW PINK PINK ORANGE YELLOW BLACK RED/BLACK RED/BLACK BLUE BROWN BLUE ORANGE GREEN WHITE Groundsmaster 3320 Main Wire Harness Diagram (Serial Numbers below 260000000) Page 11 −...
Page 258: Main Wire Harness Drawing (Serial Numbers Above 260000000)
Groundsmaster 3320 Main Wire Harness Drawing (Serial Numbers above 260000000) Page 11 − 18 Rev. A...
Page 259: Main Wire Harness Diagram (Serial Numbers Above 260000000)
GRAY BLUE/WHITE BLACK BLUE YELLOW BLACK BLACK BLACK BLACK BLACK BLACK BLACK WHITE/BLACK BLACK PINK PINK BROWN RED/BLACK PINK PINK PINK WHITE BLACK YELLOW PINK PINK PINK ORANGE YELLOW BLACK RED/BLACK RED/BLACK BLUE BROWN BLUE ORANGE GREEN WHITE Groundsmaster 3320 Main Wire Harness Diagram (Serial Numbers above 260000000) Page 11 −...

This manual is also suitable for:

Groundsmaster 3320

Toro Groundsmaster 3280-D Service Manual

Chapter 1 Safety

Chapter 2 Product Records and Maintenance

Chapter 3 Gasoline Engine

Chapter 4 Diesel Engine

Chapter 5 Hydraulic System

Chapter 6 Electrical System

Chapter 7 Chassis

Chapter 8 Drive Axles

Chapter 9 P.t.o. System

Chapter 10 Cutting Units

Chapter 11 Electrical Diagrams

Quick Links

Chapters

Troubleshooting

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Summary of Contents for Toro Groundsmaster 3280-D