HYDRAULIC SYSTEM RT765E-2 SERVICE MANUAL
2-18
Published 9-04-2014, Control # 422-08
5. Remove the four nuts and washers attaching the pump
and pump disconnect assembly to the drive pad on the
torque converter. Remove the pump and pump
disconnect assembly from the studs.
6. Separate the pump and the pump disconnect assembly.
Clean the gasket material from the drive pad on the
torque converter and the pump and the pump
disconnect assembly.
7. Examine the four studs that the pump and pump
disconnect assembly mount on. Remove any damaged
stud.
8. Cover the drive pad’s opening to prevent dirt from
entering.
No. 1 Pump and Pump Disconnect Assembly
Installation (Optional)
1. Clean the drive pad and the pump disconnect assembly
with Loctite cleaning solvent 7070 or similar non
chlorinated solvent.
2. As needed, prepare to install stud(s) to replace any
removed previously. Apply Loctite 271 or equivalent per
Grove specification to the threads of each stud that
screw into the drive pad. Install stud(s).
3. Apply anti-seize compound to the internal and external
splines of the splined coupler.
4. Apply a light coating of Loctite primer N7649 to drive pad
mounting surface, to both pump disconnect assembly
mounting surfaces, and pump mounting surface. Allow
primer to dry for one to two minutes. Primer must be dry.
Mating of parts should occur within five minutes.
5. Apply gasket material Loctite Master Gasket 518 to drive
pad mounting surface, to both pump disconnect
assembly mounting surfaces, and pump mounting
surface.
6. Route pump disconnect assembly and its gasket on the
studs. Make sure the splined coupler’s splines mesh
properly with the splined shaft in the drive pad. Press the
pump disconnect assembly and its gasket into place so
they seat properly on the drive pad.
7. Route pump and its gasket on the studs. Make sure the
pump’s splined drive shaft meshes with the pump
disconnect assembly’s splined coupler. Press the pump
and its gasket into place so they seat properly on the
pump disconnect assembly.
8. Secure pump drive assembly and pump to torque
converter drive pad with nuts and washers. Torque nuts;
refer to Fasteners and Torque Values, page 1-16 for
proper torque value.
9. Connect the distribution and supply lines to the pump as
tagged during removal. For the two distribution lines,
install new o-rings with the flange halves and capscrews.
No. 2 Pump Removal
1. Gain access to the pump. It is bolted to the right side of
the engine.
2. Tag and disconnect the supply line from the pump. Cap
or plug the line and port.
3. Tag and disconnect the pump distribution line from the
pump. Cap or plug the line and port.
4. Remove the capscrews, nuts and washers attaching the
No. 2 pump to the drive pad on the engine. Remove the
pump.
5. Clean the gasket material from the engine drive pad and
the pump.
6. Cover the drive pad’s opening to prevent dirt from
entering.
No. 2 Pump Installation
1. Clean the drive pad and the pump with Loctite cleaning
solvent 7070 or similar non chlorinated solvent.
2. Apply a light coating of Loctite primer N7649 to drive pad
and pump mounting surface. Allow primer to dry for one
to two minutes. Primer must be dry. Mating of parts
should occur within five minutes.
3. Apply gasket material Loctite Master Gasket 518 to drive
pad and pump mounting surface.
CAUTION
Keep the pump as level as possible to avoid damaging
the input spline.
CAUTION
Absolute cleanliness is essential when working on the
hydraulic pumps. Always work in a clean area. The
presence of dirt and foreign materials in the system can
result in serious damage or inadequate operation.
CAUTION
Keep the pump as level as possible to avoid damaging
the input spline.
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