REMOVAL - TM-10-3930-607-150182

HYDRAULIC

To assure proper pump lubrication the pump is equipped

with a relief valve. This assembly is made of a ball and

spring and located in the end of the body.

B. REMOVAL

1. Remove the inspection plate at the left rear

wheel well. (Fig. 4)

Figure 2.

Figure 4.

2. Clean the pump exterior and work area around

the pump, removing all loose dirt which may enter the

hydraulic system when the hoses are disconnected, or

the timing gear cavity when the pump is removed.

3. Check general condition of hydraulic hoses and

pump mounting. Disconnect inlet and outlet hoses.

Remove inlet fitting and cap all openings to prevent dirt

from entering the system.

4. Unscrew mounting nuts and washers.

Then

work the pump away from timing gear case.

5. Either lift the pump out past the engine manifold

Figure 3.

or remove from the bottom of the truck. The access

of the high pressure and low pressure oils between the

hole may be utilized.

bearings and front cover is prevented by an O-ring and

back-up ring placed o0i each bearing hub and between

C. DISASSEMBLY

the bearings and cover. These pumps also utilize

springs to create an initial pressure loading of the

1. Disassemble in the sequence as indicated by

bearings.

the numbers on Figure 3.

B-146