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 Schematics
- Hydraulic Flow Diagrams
- Special Tools
- Troubleshooting
- Testing
- Traction System Operation Testing
- Charge Relief Valve Pressure Test (Using Pressure Gauge)
- Transmission Piston Pump Flow Test (Using Tester with Pressure Gauges and Flow Meter)
- Traction Relief Valve Pressure Test (Using Tester with Pressure Gauges and Flow Meter)
- Wheel Motor Efficiency Test (Using Tester with Pressure Gauges and Flow Meter)
- PTO Pressure Valve Test (Using Pressure Gauge)
- Implement Relief Pressure Test (Using Pressure Gauge)
- Gear Pump Flow Test (Using Tester with Pressure Gauges and Flow Meter)
- Lift Cylinder Internal Leakage Test
- Service and Repairs
- General Precautions for Removing and Installing Hydraulic System Components
- Flush Hydraulic System
- Charge Hydraulic System
- Hydraulic Tank
- Wheel Motors
- Wheel Motor Service
- Transmission
- Transmission Service
- Gear Pump
- Gear Pump Service
- Manual Lift Control Valve (SN Below 313000000)
- Manual Lift Control Valve Service (SN Below 313000000)
- Lift Control Manifold (SN Above 313000000)
- Lift Control Manifold Service (SN Above 313000000)
- Polar TracTM Hydraulic Control Valve
- Polar TracTM Hydraulic Control Valve Service
- Lift Cylinder
- Lift Cylinder Service
- Polar TracTM Lift Cylinder
- Polar TracTM Lift Cylinder Service
- Oil Cooler
- 5 - Electrical System
- Electrical Schematics and Diagrams
- Special Tools
- Troubleshooting
- Electrical System Quick Checks
- Component Testing
- Ignition Switch
- Indicator Lights
- Hour Meter
- PTO Switch
- Neutral Switches
- Seat Switch
- Parking Brake Switch (SN Below 310000000)
- Parking Brake Switch (SN Above 310000000)
- Standard Control Module
- Standard Control Module Logic Chart
- PTO Solenoid Valve Coil
- Lift Control Manifold Solenoid Valve Coils (SN Above 313000000)
- Fusible Link Harness
- Diode Assembly
- Glow Relay
- High Temperature Warning Switch
- High Temperature Shutdown Switch
- Dual Temperature Switch (Polar TracTM Machines)
- Deck Lift/Lower Switch (SN Above 313000000)
- Fuel Pump
- Fuel Stop Solenoid
- Glow Controller
- Service and Repairs
- 6 - Chassis
- 7 - Cutting Deck
- 8 - Foldout Diagrams
- Electrical Drawing Designations
- Hydraulic Schematics
- Hydraulic Schematic (SN Below 313000000)
- Hydraulic Schematic (SN Below 313000000) with Rear Attach Lift Kit
- Hydraulic Schematic (SN Below 313000000) with Polar Trac Installed)
- Hydraulic Schematic (SN Below 313000000) with Polar Trac and Rear Attach Lift Kit
- Hydraulic Schematic (SN From 313000001 to 314999999)
- Hydraulic Schematic (SN Above 315000000)
- Electrical Schematics
- Circuit Diagrams
- Wire Harness
Rev. A
Groundsmaster 7200/7210 Hydraulic SystemPage 4 - 1
Chapter 4
Hydraulic System
Table of Contents
SPECIFICATIONS 2............................
GENERAL INFORMATION 3.....................
Hydraulic Hoses 3............................
Hydraulic Hose and Tube Installation 4..........
Hydraulic Fitting Installation 5..................
Operator ’s Manual 7..........................
Pushing Traction Unit 7........................
Relieving Hydraulic System Pressure 7..........
Tr action Circuit (Closed Loop) Component
Failure 8...................................
HYDRAULIC SCHEMATICS 9....................
HYDRAULIC FLOW DIAGRAMS 10...............
Traction Circuits 10...........................
Lift Circuit (Raise) 12..........................
Lift Circuit (Lower) 14..........................
PTO Circuit 16................................
SPECIAL TOOLS 18............................
Hydraulic Pressure Test Kit 18..................
Hydraulic Tester (Pressure and Flow) 18.........
Hydraulic Test Fitting Kit 19....................
O- Ring Kit 19................................
High Pressure Hydraulic Oil Filter 19............
TROUBLESHOOTING 20........................
TESTING 24...................................
Tr action System Operation Testing 25...........
Charge Relief Valve Pressure Test 26...........
Transmission Piston Pump Flow Test 28.........
Traction Relief Valve Pressure Test 30...........
Wheel Motor Efficiency Test 32.................
PTO Pressure Valve Test 34....................
Implement Relief Pressure Test 36..............
Gear Pump Flow Test 38.......................
Lift Cylinder Internal Leakage Test 40............
SERVICE AND REPAIRS 43.....................
General Precautions for Removing and
Installing Hydraulic System Components 43....
Check Hydraulic Lines and Hoses 43............
Flush Hydraulic System 44.....................
Charge Hydraulic System 45...................
Hydraulic Tank 46.............................
Wheel Motors 48.............................
Wheel Motor Service 50.......................
Transmission 52..............................
Transmission Removal 53....................
Transmission Installation 54..................
Transmission Service 56.......................
Transmission Disassembly 57.................
Transmission Assembly 68...................
Gear Pump 78................................
Gear Pump Service 80........................
Manual Lift Control Valve (Serial Number Below
313000000) 84
..............................
Man
ual Lift Control Valve Service (Serial Number
Below 313000000) 86........................
Lift Control Manifold (Serial Number Above
313000000) 88..............................
Lift Control Manifold Service (Serial Number Above
313000000) 90..............................
Polar Trac
TM
Hydraulic Control Valve 92.........
Polar Trac
TM
Hydraulic Control Valve Service 94..
Lift Cylinder 96...............................
Lift Cylinder Service 98........................
Polar Trac
TM
Lift Cylinder 100..................
Polar Trac
TM
Lift Cylinder Service 102...........
Oil Cooler 104................................
PARKER TORQMOTOR
TM
SERVICE PROCEDURE
(TC, TB, TE, TJ, TF, TG, TH AND TL SERIES)
Hydraulic
System