Group 29, Hydraulic Sump, Filters, and Pump
SM 765, Sep ’06 Main Hydraulic Removal and Installation • 29-3-3
3. Disconnect the pressure line from the pump. Cap the
hose and set aside.
4. Remove the pump mounting fasteners.The ground
strap will come off with the fasteners.
Main Hydraulic Pump Installation
IMP
RTANT
Keep all components clean during installa-
tion.
1. Be sure new or serviced pump is well lubricated
before installation.
2. Install pump onto motor. Install and tighten cap-
screws.
3. Slide suction hose and clamp into place and tighten.
4. Connect pump outlet hose and tighten. Use two
wrenches to tighten hose fittings to prevent twisting
of lines.
N
TEN
TE
Always clean or replace hydraulic sump suc-
tion screen fitting when installing new or
rebuilt pump. See Section 1, Main Hydraulic
Filters and Fluid Maintenance.
5. Refill sump as necessary using Clark Specification
MS-68 hydraulic fluid. See Section 1 for description
of sump tank fill levels.
6. Reinstall hose and cable support bracket.
7. Check operation of hydraulic system. See Section 1,
Main Hydraulic Filters and Fluid Maintenance.
8. Check fluid level of sump again. Add fluid as neces-
sary.
Routine Maintenance
• No maintenance is necessary other than periodic
checks for tightness of the mounting bolts and port
fittings plus visual examination for oil leaks. The
unit should be kept externally clean.
• The unit must be operated on clean hydraulic fluid.
Directions for filter service in this Group must be
adhered to. A fluid cleanliness level of IS04406 17/
14 or better is recommended to give maximum life.
Pressure Line
Hydraulic Motor
Hydraulic
Pump
Hydraulic Motor
Hydraulic
Pump
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