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
- Kubota 05 E2B Series Workshop Manual (S/N below 280000000)
- Kubota 05-E3B Series Workshop Manual (S/N 280000001 and up)
- Kubota 05-E4B Series Workshop Manual
- 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
- Parker Torqmotor Service Procedure
- 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
Groundsmaster 7200/7210 Hydraulic SystemPage 4 - 103
Disassembly (Fig. 112)
1. Remove oil from lift cylinder into a drain pan by slowly
pumping the cylinder rod. Plug both ports and clean the
outside of the c ylinder.
IMPORTANT: Prevent damage when clamping the
lift cylinder into a vise; clamp on the clevis end of
the barrel ONLY.
2. Mount lift cylinder securely in a vise by clamping on
the clevis end of the barrel. Use of a vise with soft jaws
is recommended.
3. Using a spanner wrench, rotate head clockwise until
the edge of the retaining ring appears in the barrel open-
ing. Insert a screwdriver under the beveled edge of the
retaining ring to start the retaining ring through the open-
ing.Rotatetheheadcounter-clockwisetoremovere-
taining r ing from barrel and head.
4. Remove plugs from ports. Extract shaft, head and
piston by carefully twisting and pulling on the shaft.
IMPORTANT: Do not clamp vise jaws against the
rod surface. Clamp on the clevis ONLY.
5. Mount rod securely in a vise by clamping on the cle-
vis of the rod. Remove lock nut and piston from the rod.
Carefully slide head off the shaft.
6. Taking care to not scratch or damage the piston, re-
move cap seal and O- ring from the piston. If necessary,
remove wear ring from piston.
7. Taking care to not scratch or damage the head, re-
move O - ring, back- up ring, wiper and seal from the
head.
Inspection
CAUTION
Use eye protection such as goggles when using
compressed air.
1. Wash all lift cylinder components in solvent. Dry
parts with compressed air.
2. Inspect internal surface of barrel for deep scratches,
out- of- roundness and bending. Replace if worn or
damaged.
3. Inspect head, shaft and piston for excessive pitting,
scoring and wear. Replace any worn or damaged parts.
Assembly (Fig. 112)
1. Make sure all lift cylinder parts are clean before as-
sembly.
2. Coat new O- rings, back- up ring and other seals with
clean h ydraulic oil.
A. Carefully install cap seal and O- ring to the piston.
Install wear ring o n piston if removed.
B. Carefully install back- up ring, O- ring, seal and
wiper to the head.
IMPORTANT: Do not clamp vise jaws against the
rod surface. Clamp on the clevis ONLY.
3. Mount rod securely in a vise by clamping on the cle -
vis of the rod.
A. Coat rod with clean hydraulic oil.
B. Slideheadontotherod.
C. Install piston onto the rod and secure with lock
nut. Torque lock nut from 250 to 300 ft- lb (339 to
406 N- m).
D. Remove shaft assembly from the vise.
IMPORTANT: Prevent damage when clamping the
hydraulic cylinder into a vise; clamp on the clevis
end o f the barrel ONLY.
4. Mount barrel securely in a vise by clamping on the
clevis end of the barrel.
IMPORTANT: When installing the head into the bar-
rel, pay careful attention to the retaining ring slot in
the barrel to insure that the piston and head s eals do
not lodge in the slot.
5. Coat all internal parts with a light coat of clean hy-
draulic oil. Slide piston, shaft and head a ssembly into
the barrel being careful not to damage the seals.
6. Secure head in barrel by installing retaining ring.
Align retaining ring hole in the head with the access slot
in the barrel. Insert the retaining ring hook into the hole
androtateheadclockwiseuntiltheretainingringiscom-
pletely pulled into the barrel and the ring ends are cov-
ered.
Hydraulic
System