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--D Hydraulic SystemPage 4 -- 1
Chapter 4
Hydraulic System
Table of Contents
SPECIFICATIONS 2.............................
GENERAL INFORMATION 3.....................
Operator’s Manual 3..........................
Check Hydraulic Fluid 3.......................
Towing Machine 3.............................
Hydraulic Hoses 4............................
Hydraulic Hose and Tube Installation 5..........
Hydraulic Fitting Installation 6...................
Relieving Hydraulic System Pressure 8..........
Traction Circuit Component Failure 8............
HYDRAULIC SCHEMATIC 9.....................
HYDRAULIC FLOW DIAGRAMS 10...............
Traction Circuit 10.............................
Mow Circuit 12...............................
Mow Circuit Cutting Deck Blade Braking 14.......
Lift Circuit: Raise Cutting Decks 16..............
Lift Circuit: Lower Cutting Decks 18..............
Steering Circuit 20............................
SPECIAL TOOLS 22............................
TROUBLESHOOTING 26........................
General Hydraulic System Problems 26..........
Traction Circuit Problems 27....................
Mow Circuit Problems 28.......................
Lift Circuit Problems 29........................
Steering Circuit Problems 30...................
TESTING 32...................................
Traction Circuit Relief Valve (R3) and (R4)
Pressure Test 34............................
Traction Circuit Charge Pressure Test 36.........
Gear Pump (P3) Flow Test 38..................
Front Wheel Motor Efficiency Test 40............
Piston (Traction) Pump Flow Test 42.............
Relief Valve (PRV1) and (PRV2) Pressure Test 44.
Gear Pump (P1) and (P2) Flow Test 46..........
Deck Motor Efficiency Test 48..................
Lift Relief Valve (PRV) Pressure Test 50..........
Gear Pump (P4) Flow Test 52..................
Lift Cylinder Internal Leakage Test 54............
Steering Relief Valve (R10) Pressure Test 56.....
Steering Cylinder Internal Leakage Test 58.......
SERVICE AND REPAIRS 60.....................
General Precautions for Removing and Installing
Hydraulic System Components 60.............
Check Hydraulic Lines and Hoses 61............
Flush Hydraulic System 61.....................
Filtering Closed--Loop Traction Circuit 62.........
Hydraulic System Start--up 63..................
Hydraulic Reservoir 64........................
Hydraulic Pump Drive Shaft 66.................
Hydraulic Pump Assembly 68...................
Piston (Traction) Pump Service 72..............
Gear Pump Service 74
.........................
Front
Wheel Motors 76........................
Rear Wheel Motors 80.........................
Wheel Motor Service 84.......................
CrossTrax
TM
AWD Manifold 86..................
CrossTrax
TM
AWD Manifold Service 88...........
Deck Control Manifold 90......................
Deck Control Manifold Service 92...............
Cutting Deck Motor 94.........................
Cutting Deck Motor Service 96..................
Lift Control Manifold 100.......................
Lift Control Manifold Service 102................
Lift Cylinder 104..............................
Lift Cylinder Service 106.......................
Steering Control Valve 108.....................
Steering Control Valve Service 110..............
Steering Cylinder 112..........................
Steering Cylinder Service 114..................
Oil Cooler 116................................
DANFOSS LPV CLOSED CIRCUIT AXIAL
PISTON PUMPS REPAIR MANUAL
DANFOSS LPV CLOSED CIRCUIT AXIAL
PISTON PUMPS SERVICE INSTRUCTIONS
PARKER TORQMOTOR
TM
SERVICE PROCEDURE
(TC, TB, TE, TJ, TF, TG, TH AND TL SERIES)
DANFOSS STEERING UNIT TYPE OSPM
SERVICE MANUAL
Hydraulic
System