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 - 89
Lift Control Manifold Removal (Fig. 103)
WARNING
Before disconnecting or performing any work on
the hydraulic system, all pressure in the system
must be relieved. See Relieving Hydraulic System
Pressure in the General Information section.
1. Park machine on a level surface, lower cutting deck
(or implement), stop engine, engage parking brake and
remove key from the ignition switch.
WARNING
Make sure that cutting deck is fully lowered and
supported before loosening hydraulic lines, car-
tridge valves or plugs from lift manifold. If deck is
raised as manifold components are loosened,
deck may drop unexpectedly.
2. Thoroughly clean hydraulic hose ends and fittings on
lift control manifold to prevent hydraulic system contam-
ination.
3. Label all hydraulic and electrical connections for as-
sembly purposes.
4. Disconnect hydraulic hoses connected to the hy-
draulic fittings on the lift control manifold. Allow hoses to
drain into a suitable container. Install clean caps or plugs
on disconnected hoses and fittings to prevent contami-
nation.
5. Disconnect wire harness connectors from solenoid
coils on manifold.
6. Support manifold to prevent it from falling.
7. Remove two (2) cap screws (item 17) and lock wash-
ers (item 18) that secure manifold to machine. Remove
manifold from machine.
8. If hydraulic fittings are to be r emoved from lift control
manifold, mark fitting orientation to allow correct assem-
bly. Remove hydraulic fittings from manifold as needed.
Discard O- rings from removed fittings.
Lift Control Manifold Installation (Fig. 103)
1. If hydraulic fittings were removed from lift control
manifold, lubricate new O- rings with clean hydraulic oil,
position O- rings to fittings and install fittings into man-
ifold ports (see Hydraulic Fitting Installation in the Gen-
eral Information section of this chapter).
2. Position lift control manifold to machine and secure
manifold with two (2) cap screws and lock washers.
3. Remove caps and plugs from hydraulic hoses and
fittings.
4. Lubricate and install new O- rings on control man-
ifold fittings. Using labels placed during manifold remov-
al, correctly connect hydraulic hoses to lift control
manifold (see Hydraulic Hose and Tube Installation in
the General Information section of this chapter).
5. Connect wire harness connectors to solenoid coils
on manifold.
6. Check oil level in hydraulic reservoir and add correct
oil if necessary.
7. Follow Hydraulic System Start- up procedures (see
Hydraulic System Start- up in this section).
Hydraulic
System