Rear Drag link

TM 10-3930-242-34

c. Check to see that the scribe mark on the

b e changed to accomplish this adjustment. Turn

p i t m a n arm lines up with scribe mark on the

s t e e r i n g wheel slightly to obtain correct posi-

s t e e r i n g sector shaft. Disassemble and reposi-

tion of pitman arm, As a final check, after such

t i o n if required.

a n adjustment, verify that all four wheels are

d. Place vehicle in 2-wheel steering mode.

a i m e d straight ahead using the string method

e. Disconnect valve link arm at end opposite

described above. Readjust drag links if re-

f r o m valve.

quired.

f. P a s s s n u g - f i t t i n g , r o u n d r o d o r t u b e

k. Operate the steering through full left and

t h r o u g h aligning hole in intermediate steering

r i g h t positions and in all three steering modes

arm, and, if necessary, adjust the 3-position cy-

to check for proper functioning and no binding.

linder until the aligning hole in the inter-

l. Carefully check the arm on the inboard end

mediate steering arm lines up with aligning

of the front cross shaft for looseness. Any loose-

h o l e in pitman arm.

n e s s in this arm that allows relative motion be-

g. Disconnect front and rear drag links. Ad-

tween it and the cross shaft must be eliminated,

just front and rear wheels to aim straight ahead

as it will cause eventual loss of control.

a n d to have zero toe-in. Toe-in is adjusted by

5-22. Rear Drag link

c h a n g i n g tie rod setting. Wheel position is ad-

a. Removal. Remove the rear drag link (TM

j u s t e d by using long pry bar wedged between

10-3930-242-12).

a x l e hub and wheel rim. Considerable force is

b . Disassembly. Refer to figure 5-21 and dis-

required as hydraulic fluid must be forced

a s s e m b l e the rear drag link.

through the power-steering system. Alignment

is verified by passing a string completely

c. Cleaning and Inspection.

a r o u n d the outside of the vehicle at the axle

(1) Clean the rear drag link components

c e n t e r l i n e . Proper alignment exists when string

t h o r o u g h l y , using solvent P-D-680, or equal.

t o u c h e s each tire sidewall in two places.

( 2 ) Inspect the drag link for worn bearing,

h. R e m o v e t h e a l i g n m e n t r o d f r o m i n t e r -

worn stud, broken spring, damage, or cracks.

m e d i a t e steering arm and reconnect the valve

R e p l a c e all defective parts.

l i n k arm. Adjust the valve link arm by turning

d. Reassemble. Refer to figure 521 and reas-

the threaded section until ball stud at valve end

semble the rear drag link as follows:

of arm is directly opposite lower pivot center in

(1) Apply a light coat of grease on the non-

i n t e r m e d i a t e steer arm and also opposite end of

chromed portion of the shaft (30).

rear cross shaft tube.

( 2 ) Coat the sleeves (25), and spring (26)

i. Adjust front and rear drag links to drop

w i t h grease and install the shaft (30).

into axle steering arms. The rear drag link con-

( 3 ) Install spacer (25) and nut (23) on the

t a i n s a spring which must not be extended or

s h a f t , then tighten the nut until one thread is

compressed during reconnection.

exposed on the back side of the nut.

j. Start engine, and w i t h o u t m o v i n g s t e e r i n g

( 4 ) Assemble nut (27), adapter (28), and

w h e e l , operate the steering mode selector into

wiper (29). Install on shaft (30).

t h e crab and cramp or 4-wheel steering posi-

(5) Install shaft assembly into tube (22) and

tions. With the front wheels aimed straight

t i g h t e n the adapter until there is no free play

ahead, there should be no movement of the rear

b e t w e e n shaft assembly and the tube, Excessive

w h e e l s as the steering mode selector is shifted

t i g h t e n i n g of the adapter can also cause free

through the various modes. If movement does

play.

o c c u r , the links in the system have been dam-

( 6 ) After the assembly has been adjusted,

a g e d . The steering system can be adjusted to

tighten locknut (27) against the tube (22).

compensate for parts which have sustained

m i n o r deformations. Satisfactory operation can

NOTE

be accomplished by adjusting the valve link arm

R e f e r to paragraph 1-7b for steering adjustment

a n d the rear drag link to eliminate the move-

specifications.

ment of the rear wheels. Only if absolutely

e. Installation. Install the rear drag link (TM

necessary should the position of the pitman arm

10-3930-242-12).

5-39