Main Hydraulic Pump - TM-10-3930-634-120075

TM 10-3930-634-12

Figure 4-38. Rear steering pump, removal and installation.

4-67. Main Hydraulic Pump

(1) Clean the main hydraulic pump with an ap-

a. General. The main hydraulic pump is a dual

proved cleaning solvent and dry thoroughly.

pump. The larger portion of the pump supplies hy-

(2) Inspect the pump for cracks, breaks, loose hard-

draulic pressure to the lift cylinders and to the exten-

ware and leaks. Replace a defective pump.

sion cylinders. The front or smaller portion of the pump

d. Installation. Refer to figure 4-39 and install the

supplies pressure for front wheel steering. For access to

main hydraulic pump by reversing removal procedure.

the main hydraulic pump, remove the forward panel

NOTE

under the right rear fender.

When pump failure occurs and metal

b. Removal. Refer to figure 4-39 and remove main

particles contaminate the hydraulic oil,

hydraulic pump and cap all lines. Pump is located on

the complete hydraulic system oil and

the front of the torque converter directly above the out-

fitters must be changed, as indicated by

put shaft.

the contamination indicator (figure

4-41).

c. Cleaning and Inspection.