Section XII. FRAME AND SEAT

TM 10-3930-631-12

(4) Position the cylinder plunger rod half

(5, fig. 4-29). Cap hoses and fittings to prevent entrance

way out of the steering cylinder (5). Loosen lock nut (4)

of foreign material into hydraulic system.

securing drag link to cylinder.

(2) Remove cotter pin (2) and loosen

(5) Turn drag link in or out on cylinder rod.

adjusting plug (1) and lift drag link from pivot arm ball

Place wrench on flats on cylinder plunger rod to hold rod

stud.

while adjusting ball socket. Adjust drag link until it is

(3) Support cylinder and remove cotter pins

centered over pivot arm ball stud with the rear wheels in

(6) and washers (7). Tap or drive pin (8) from bracket

a straight ahead position and parallel with the frame.

(9) and cylinder.

(6) Connect drag link (3) to ball stud.

(4) Remove cylinder from truck. Loosen

Tighten adjusting plug to secure drag link on stud. Install

lock nut (4) and remove drag link from cylinder.

c. Installation.

cotter pin (2) in drag link to secure adjusting plug.

e. Adjusting Check.

(1) Install drag link (3, fig. 4-29) and lock

(1) Remove the blocks and lower rear of

nut (4) on the threaded end of cylinder rod. Do not

truck to rest on wheels.

tighten lock nut.

(2) Sit in operator's seat and turn master

(2) Install cylinder and drag link in truck with

switch on. Turn steering wheel to full left and full right

cylinder in line with hole in bracket (9). Secure cylinder

positions. Wheel spindles should contact stop screws in

to bracket with pin (8), washers (7) and cotter pins (6).

each direction and cylinder plunger rod should extend

(3) Refer to paragraph 4-40 above and

and retract an equal distance.

adjust drag link and cylinder rod extension to position

wheel correctly.

4-41. Steering Cylinder

(4) Remove caps from cylinder and hoses

a. Inspection. Lift and block truck as described

and connect hoses to cylinder fittings.

above. Remove floor and toe plates to gain access to

(5) Check steering operation as described

steering cylinder. Remove drip pan. Inspect steering

in paragraph 4-40.

cylinder and hoses for leaks and damage. Replace

(6) Check hydraulic connections for leaks.

cylinder if necessary.

(7) Install toe and floor plates and drip pan.

b. Removal, -

(1) Disconnect hoses from steering cylinder

Section XII. FRAME AND SEAT

c. An overhead guard to protect the operator is

4-42. General

mounted on the four corners of the frame.

a. The welded frame mounts the components of

4-43. Battery Compartment Covers

the truck. Truck components are enclosed with sheet

a. Removal. Inspect battery covers for dents,

metal covers. The battery compartment has a hinged

cover.

breaks and drainage. Replace if necessary.

b. A seat assembly is mounted just forward of the

(1) Tilt seat forward and remove four screws

battery compartment. The seat is hinged to operate the

and nuts securing battery cover (fig. 4-30) to truck and

parking brake linkage and when it is unoccupied it tilts up

remove cover.

and forward.

4-36