Service Manual
Table Of Contents
- Title Page
- Revision History
- Reader Comments
- Preface
- Table of Contents
- 1 - Safety
- 2 - Product Records and Maintenance
- 3 - Kubota Diesel Engine
- 4 - Hydraulic System
- Specifications
- General Information
- Hydraulic Schematic
- Hydraulic Flow Diagrams
- Special Tools
- Troubleshooting
- Testing
- Traction Circuit Relief Valve (R3) and (R4) Pressure Test
- Traction Circuit Charge Pressure Test
- Gear Pump (P3) Flow Test
- Front Wheel Motor Efficiency Test
- Piston (Traction) Pump Flow Test
- Relief Valve (PRV1) and (PRV2) Pressure Test
- Gear Pump (P1) and (P2) Flow Test
- Deck Motor Efficiency Test
- Lift Relief Valve (PRV) Pressure Test
- Gear Pump (P4) Flow Test
- Lift Cylinder Internal Leakage Test
- Steering Relief Valve (R10) Pressure Test
- Steering Cylinder Internal Leakage Test
- Service and Repairs
- General Precautions for Removing and Installing Hydraulic System Components
- Check Hydraulic Lines and Hoses
- Flush Hydraulic System
- Filtering Closed--Loop Traction Circuit
- Hydraulic System Start--up
- Hydraulic Reservoir
- Hydraulic Pump Drive Shaft
- Hydraulic Pump Assembly
- Piston (Traction) Pump Service
- Gear Pump Service
- Front Wheel Motors
- Rear Wheel Motors
- Wheel Motor Service
- CrossTrax AWD Manifold
- CrossTrax AWD Manifold Service
- Deck Control Manifold
- Deck Control Manifold Service
- Cutting Deck Motor
- Cutting Deck Motor Service
- Lift Control Manifold
- Lift Control Manifold Service
- Lift Cylinder
- Lift Cylinder Service
- Steering Control Valve
- Steering Control Valve Service
- Steering Cylinder
- Steering Cylinder Service
- Oil Cooler
- 5 - Electrical System
- General Information
- Special Tools
- Troubleshooting
- Electrical System Quick Checks
- Adjustments
- Component Testing
- Ignition Switch
- Indicator Lights
- Hour Meter
- Temperature Gauge
- PTO Switch
- Headlight Switch
- Seat Switch
- Joystick Raise and Lower Switches
- Traction Neutral Switch
- Parking Brake Switch
- Mow/Transport Switch
- Start Relay
- Main Power and Glow Relays
- Toro Electronic Controller (TEC)
- Fuses
- Diode Assembly
- Fusible Link Harness
- Hydraulic Solenoid Valve Coil
- Temperature Sender
- High Temperature Shutdown Switch
- Oil Pressure Switch
- Fuel Stop Solenoid
- Fuel Pump
- Service and Repairs
- 6 - Chassis
- 7 - Cutting Decks
- 8 - Foldout Drawings
- Hydraulic Schematic
- Electrical Schematic Sheet 1 of 2 (Serial numbers below 315000000)
- Electrical Schematic Sheet 2 of 2 (Serial numbers below 315000000)
- Eclectrical Schematic (Serial numbers 315000001 to 403430000)
- Eclectrical Schematic (Serial numbers above 403430001)
- Main Wire Harness Drawing (Serial numbers below 315000000)
- Main Wire Harness Diagram (Serial numbers below 315000000)
- Main Wiring Harness Drawing (Serial numbers 315000001 to 403430000)
- Main Wiring Harness Diagram (Serial numbers 315000001 to 403430000)
- Main Wiring Harness Drawing (Serial numbers 403430001 to 405699999)
- Main Wiring Harness Diagram (Serial numbers 403430001 to 405699999)
- Main Wiring Harness Drawing (Serial numbers above 405700000)
- Main Wiring Harness Diagram (Serial numbers above 405700000)
- Seat Wire Harness Drawing
- Seat Wire Harness Diagram
- Engine Wire Harness Drawing
- Engine Wire Harness Diagram
Groundsmaster 4300--DHydraulic System Page 4 -- 2
Specifications
Item Description
Piston (Traction) Pump Sauer--Danfoss, LPV Closed Circuit Axial Piston Design
Maximum Pump Displacement (per revolution) 2.14 in
3
(35 cc)
Gear Pump Casappa 4 section, positive displacement gear type pump
Section P1/P2 Displacement (per revolution) 1.03 in
3
(16.84 cc)
Section P3 Displacement (per revolution) 0.37 in
3
(6.1 cc)
Section P4 Displacement (per revolution) 0.24 in
3
(3.9 cc)
Charge Circuit Relief (R5) Pressure 200 PSI (14 bar)
Traction Circuit Relief P ressure
Forward (R3) 3625 PSI (250 bar)
Reverse (R4) 3625 PSI (250 bar)
Front Wheel Motors Parker orbital rotor motor, TG Series
Displacement (per revolution) 24.7 in
3
(405 cc)
Rear Wheel Motors Parker orbital rotor motor, TL Series
Displacement (per revolution) 18.9 in
3
(310 cc)
Mow Circuit Relief Pressure
Rear Mow Circuit (PRV1) 2500 PSI (175 bar)
Front Mow Circuit (PRV2) 3500 PSI (241 bar)
Cutting Deck Motor Casappa gear motor
Displacement (per revolution) 1.05 in
3
(17.16 cc)
Cross Over Relief Valve Pressure 1813 PSI (125 bar)
Steering Valve Sauer--Danfoss Steering Unit, Type OSPMS
Displacement (per revolution) 6.1 in
3
(100 cc)
Steering Circuit Relief (R10) Pressure 1000 PSI (70 bar)
Lift Circuit Relief (PRV) Pressure 2000 PSI (138 bar)
Hydraulic Filter (Charge and Steering Circuits) Spin--on Cartridge Type with 50 PSI (3.4 bar) Relief in Adapter
Hydraulic Filter (Mow and Lift Circuits) Spin--on Cartridge Type with 50 PSI (3.4 bar) Relief in Adapter
(filter adapter includes filter change indicator)
Hydraulic Oil See Operator’s Manual
Hydraulic Reservoir Capacity 14 U.S. Gallons (53 Liters)