Section XII. STEERING (GROUP 14)

TM 10-3930-222-20

Section XII. STEERING (GROUP 14)

73. General

the plug slot alines with the cotter pin holes; then insert

The power steering system incorporated in this truck

the cotter pin to secure adjustment.

consists of a hydraulic cylinder mounted between the

main frame and the center arm in the steering axle, a

control valve incorporated in the steering gear, and an

75. Tie Rods

engine-driven hydraulic pump. The steering axle is

fastened to the main frame. The wheel spindles and

a. Removal. Refer to figure 82 and remove the tie

center arm are supported in the axle. The hydraulic oil

rods as follows:

is furnished from the main hydraulic tank.

(1) Remove the cotter pin (16) from tie rod

end.

74. Drag Link Assembly

(2) Remove the castellated nut (17) that

secures the rod end to the spindle on the

a. Removal and Disassembly. Refer to figure 82

steering axle.

and remove the drag link assembly as follows:

(3) Remove the tie rod end (18) from the

(1) Remove the cotter pin (6) that secures the

spindle.

end plug (1) at the steering gear end of

(4) Repeat procedures (1) through (3) above

the drag link (8).

on other end of the tie rod (21) and

(2) Using a drag link bit, unscrew and remove

remove the tie rod from the truck.

the end plug from the drag link.

(5) Repeat procedures (1) through (4) and

(3) Remove the spring bumper (2), spring (3)

remove remaining tie rod.

and section of the ball seat

(6) Loosen jamnut (20) and unscrew tie rod

(4) from the drag link end. (4) Remove the

end (18) from tie rod if necessary.

drag link from the steering pitman arm

ball.

b. Repair.

Repair tie rod by replacing parts as

(5) Remove the remaining section of the ball

needed.

seat (4) and seat (5) from the drag link.

(6) Remove the cotter pin (9) that secures the

c. Installation. Reverse procedures in a above.

end plug (14) at the steering center arm

end of the drag link.

d. Inspection.

(7) Remove a section of the ball seat (13)

and remove the drag link from the

(1) Inspect tie rods for straightness.

steering center arm ball.

(2) Inspect tie rod ends for secure and tight

(8) Remove the remaining section of ball seat

installation by jacking one wheel at a time

(13) spring bumper (12), spring (11) and

and shaking the wheel sideways.

seat (10) from the drag link.

(9) Remove the lubrication fittings (7 and 15)

e. Adjustment. Maintain the steering wheels in

if necessary.

alignment by adjusting the tie rods as follows:

(1) Insert a 1-inch round bar through the

b. Inspection.

holes in the upper and lower axle

(1) Inspect for broken springs (3) at each end

members and through the hole in the

of the drag link.

center arm to center the steering arm.

(2) Inspect for worn ball seats.

(2) The use of the 1-inch round bar will

prevent overadjustment. Overadjustment

would result in unequal right or left hand

c. Assembly and Installation. Reverse procedures

turning radii.

in a above.

(3) Loosen jamnuts on the left and right tie

rods and turn the tie rods until the wheels

d. Adjustment.

After installing the drag link,

are parallel with the truck.

tighten the end plugs (14). Back the end plug off until

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