GMC 1982 Light Duty Truck Service Manual page 286

3B3-30 POWER STEERING SYSTEM
11. REMOVE AND INSTALL CHECK VALVE
R E M O V E
1. R e m o v e p a rts as s h o w n .
W ith s m a ll s c re w d riv e r, p ry
c h e c k va lve fro m h o u s in g .
C a re s h o u ld be ta k e n n o t to
d a m a g e th re a d s w h e n p ry in g
o n e d g e o f h o u s in g .
R e m o v e c h e c k v alve
12. ADJUST THRUST BEARING PRELOAD
U sing sp a n n e r w ren ch
J -7 6 2 4 , tig h te n a d ju ste r
plug until th ru st
b e a rin g is firm ly
b o tto m e d , 27 N e w to n
M e tres (20 Ft. Lbs.)
M a rk h o u s in g an d
fa c e o f a d ju s te r
p lu g .
Tu rn a d ju s te r
c o u n te r c lo c k w is e u n til
m a rk o n fa c e o f a d ju s te r
lin e s u p w ith s e c o n d
m a r k o n h o u s in g .------------
IN STALL
1. In s ta ll p a rts as s h o w n .
U s in g a p ie c e o f
3 /8 tu b in g , 4 in c h e s
lo n g , c a r e fu lly
d riv e th e c h e c k
va lv e in to th e
h o u s in g .
In s ta ll c h e c k v a lve .
"7 '
M e a s u re b a c k
c o u n te r c lo c k w is e
13 m m (1 / ") a n d p la c e a
2
s e c o n d m a rk o n h o u s in g .
U s in g p u n c h in n o tc h
tig h te n lo c k n u t s e c u re ly .
H o ld a d ju s te r p lu g to
m a in ta in a lig n m e n t o f
th e m a rks .
Fig. 3B3-61 -O v e rh a u l 8 0 0 /8 0 8 G ear, C hart F
13. PITMAN SHAFT "OVER-CENTER'
SECTOR ADJUSTMENT
W h e n g e a r is o n c e n te r
fla t o n s tu b s h a ft is
n o rm a lly o n s a m e s id e as,
an d p a ra lle l w ith , s id e cove r.
i
T h e b lo c k to o th o n th e P itm a n
s h a ft is in lin e w ith th e
o v e r-c e n te r p re lo a d a d ju s te r.
T '
B a c k o ff p re lo a d a d ju s te r
u n til it s to p s , th e n tu rn
to tu rn s tu b s h a ft
(re a d in g # 1 ).
T u rn a d ju s te r in un til
to rq u e to tu rn stub sh a ft
is 0.6 to 1.2 N e w to n M etres
(6 to 10 in. Lbs.)
m o re th a n re a d in g # 1 .
T o rq u e a d ju s te r lock
nu t to 27 N e w to n M etres
(20 Ft. Lbs.) -----------------
P re v e n t a d ju s te r s c re w
fro m tu r n in g w h ile
to rq u e in g lo c k n u t.