Engine-Driven Hydraulic Pump

TM 10-3930-634-12

Figure 4-39. Main hydraulic pump, removal and installation.

4-68. Engine-Driven Hydraulic Pump

(2) Inspect pump for cracks and leaks. Replace a

defective pump.

a. General. The engine-driven hydraulic pump sup-

d. Installation. Refer to figure 4-40 and install the

plies hydraulic pressure to the brakes, side shift

engine-driven hydraulic pump by reversing the remov-

cylinder and oscillator cylinder. For access to the

al procedure.

engine-driven hydraulic pump, remove the forward

NOTE

panel under the right rear fender.

When pump failure occcurs and metal

b. Removal. Refer to figure 4-40 and remove the

particles contaminate the hydraulic oil,

engine-driven pump and cap all hydraulic lines. The

the complete hydraulic system oil and

pump is mounted on the engine flywheel housing above

filters must be changed, as indicated by

the torque converter.

the contamination indicator (figure

c. Cleaning and Inspection.

4-41).

(1) Clean pump with an approved cleaning solvent

and dry thoroughly.