Figure 5-5.Axle assembly, disassembly and reassembly (sheet 4 of 8)

TM 10-3930-634-34

5 - 8 . Differential Lockout Shift Control

out mechanism. Refer to TM 10-3930-634-12 for

bleeding procedure.

a. General. The front differential lockout mechan-

b. Removal.

ism is mounted on the forward portion of the axle

(1) Disconnect hose at fitting on side of lockout

housing just to the right of the differential assembly

control and cap line.

(reference point from the operator's seat). The rear dif-

(2) Remove six bolts and lockwashers and remove

ferential lockout mechanism is mounted on the rear of

lockout control.

the axle housing just to the left of the differential as-

(3) Remove gasket from housing flange.

sembly. Both lockout mechanisms are actuated hy-

c. Disassembly. Refer to figure 5-6 and disassemble

draulically by depressing the left pedal in the opera-

the differential lockout shift control in numerical se-

tor's compartment. The differential lockout actuator

quence.

mounted on the driver's compartment bulkhead, is

d. Cleaning and Inspection.

swing-pedal operated and has the general appearance

(1) Clean differential lockout shift control thor-

of a brake master cylinder (TM 10-3930-634-12). The

oughly, using solvent P-D-680, or equal.

differential lockout actuator is serviced by lifting the

(2) Inspect shaft for pitting and scoring.

rubber boot and filling the cylinder to within 3/4 inch of

(3) Inspect fork for breaks or excessive wear.

top of the cylinder with OE-1 0. In the event bleeding

(4) Inspect housing for cracks or breaks.

is necessary, bleeding valves are provided at each lock-