Figure 4-28. Controls and instruments, removal and installation.

TM 10-3930-634-12

c. Installation. Refer to figure 4-28 and install the

(2) Inspect the hydraulic control lever for cracks,

hydraulic control levers.

breaks, and loose hardware. Replace a defective control

lever.

TAG AND DISCONNECT ELECTRICAL LEADS AND REMOVE MOUNTING

NOTE:

HARDWARE AS NECESSARY.

TA031867

Figure 4-28. Controls and instruments, removal and installation.

differential lockout control and remove it as follows:

4-50. Differential Lockout Control

(1) Remove spring at top of lockout pedal and dis-

a. General. The differential lockout control is located

connect line at bottom of lockout control valve.

on the firewall of the driver's compartment. When the

(2) Remove four screws and lockwashers attaching

lockout pedal is pressed, brake fluid VV-B680B is

pedal assembly to the cockpit floor. Remove pedal as-

forced to the lockout mechanism mounted on each

sembly.

differential. This action insures that each pair of driv-

c. Inspection and Service.

ing wheels turn together.

(1) Inspect the rubber boot and hoses for cuts and

b. Removal. Refer to figure 4-29 for location of