Grove Published 11-10-2014, Control # 524-00 2-15
RT880E SERVICE MANUAL HYDRAULIC SYSTEM
Pump No. 1 Removal
1. Remove the pump cover to gain access to the pump.
The pump is bolted to the engine’s torque converter.
2. Tag and disconnect the supply line from the pump. Cap
or plug the line and port.
3. Tag and disconnect the pump distribution lines from the
pump. Cap or plug the lines and ports.
NOTE: On some models the charge pump and two studs
must be removed for wrench access to piston
pump mounting bolts.
4. Remove the bolts and washers attaching the pump to
the drive pad on the torque converter. Remove the
pump.
5. Clean the gasket material from the drive pad on the
torque converter.
6. Cover the drive pad’s opening to prevent dirt from
entering.
Pump No. 1 Installation
1. Install new gasket material to the pump mounting flange
as follows.
a. Clean the drive pad and the pump with Loctite
cleaning solvent 7070 or similar non chlorinated
solvent.
b. Apply a light coating of Loctite primer N7649 to both
surfaces. Allow primer to dry for one to two minutes.
Primer must be dry. Mating of parts should occur
within five minutes.
c. Apply gasket material Loctite Master Gasket 518 to
one surface. Partial cure is obtained in four hours,
with full cure in 48 hours.
2. Install pump on torque converter drive pad with bolts and
washers. Make sure the splines mesh properly. Torque
bolts to 150 lb-ft (203 Nm).
3. Replace the charge pump and studs.
4. Connect the distribution and supply lines as tagged
during removal.
Pump No. 2 Removal
1. Tag and disconnect the supply line from the pump. Cap
or plug the line and port.
2. Tag and disconnect the pump distribution line(s) from
the pump. Cap or plug the line(s) and port.
3. Remove the bolts and washers attaching the No. 2 pump
to the drive pad on the torque converter. Remove the
pump.
4. Remove the gasket material from the drive pad on the
torque converter.
5. Cover the drive pad’s opening to prevent dirt from
entering.
Pump No. 2 Installation
1. Install new gasket material to the pump mounting flange
as follows.
a. Clean the drive pad and the pump with Loctite
cleaning solvent 7070 or similar non chlorinated
solvent.
b. Apply a light coating of Loctite primer N7649 to both
surfaces. Allow primer to dry for one to two minutes.
Primer must be dry. Mating of parts should occur
within five minutes.
c. Apply gasket material Loctite Master Gasket 518 to
one surface. Partial cure is obtained in four hours,
with full cure in 48 hours.
2. Install pump on torque converter drive pad with bolts and
washers. Make sure gear teeth mesh properly. Torque
bolts; refer to Fasteners and Torque Values, page 1-15
for proper torque value.
3. Connect the distribution and supply lines as tagged
during removal.
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
When removing the pump, 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
When removing the pump, keep the pump as level as
possible to avoid damaging the input spline.
To Next Page
Loading...
