GMC 1982 Light Duty Truck Service Manual page 285

9. DISASSEMBLE AND ASSEMBLE RACK
PISTON
DISASSEM BLE
1. D is a s s e m b le p a rts
1 A s s e m b le p a rts
as s h o w n .
2. C le a n a n d in s p e c t
all p a rts fo r
e x c e s s iv e w ear.
The black balls are sm aller than
the silver balls. The black and
silver balls m ust be installed
a lte rn a te ly in to the rack-piston
and re tu rn guide to m aintain
rack piston to w o rm gear preload
T E F L O N S E A L A N D O ' RING
If re p la c e d lu b ric a te ne w seal
a n d " O " rin g w ith p o w e r
s te e rin g flu id .
T urn w o rm u n til w o rm g ro o v e
is a lig n e d w ith th e lo w e r
b a ll re tu rn g u id e ho le .
B e fo re a s s e m b lin g ra c k
in h o u s in g , b a ll re ta in e r
J -2 1 5 5 2 m u s t be in s e rte d
in to ra c k to a llo w
re m o v a l o f w o rm .
ASSEM BLE
as s h o w n .
W O R M — S lid e all th
in to th e ra c k -p is to n
L u b ric a te b a lls w ith
p o w e r s te e rin g flu id
In s ta ll b a lls , th ro u g h
b a ll re tu rn g u id e ho le ,
w h ile ro ta tin g w o rm
c o u n te rc lo c k w is e .
G U ID E — A lte rn a te ly
in s ta ll re m a in d e r o f
b a lls a n d re ta in w ith
g re a s e at e a ch
e n d o f g u id e .
C L A M P
S C R E W -T ig h te n
to 5 N ew ton M etres
(4 Ft. Lbs.)
Fig. 3B3-60~O verhaul 8 0 0 /8 0 8 G ear, Chart E
POWER STEERING SYSTEM
10. REMOVE AND INSTALL PITMAN SHAFT
SEALS AND BEARING
REMOVE
1. C le a n e n d o f
h o u s in g th o ro u g h ly
to p re v e n t d ir t fro m
2. Install p a rts as s h o w n .
e n te rin g an d be
e x tre m e ly c a re fu l n o t
to s c o re th e h o u s in g
bo re.
R e m o v e r e ta in in g rin g
w ith s n a p rin g p lie rs
J-4245.
U sin g s c re w d rive r,
p ry s e a ls a n d w a s h e rs
fro m b o re .
P ITM A N S H A F T S E A L
(S IN G LE LIP )
P IT M A N S H A F T S E A L
(D O U B L E LIP)
R ETAIN IN G R IN G
S E A L B A C K UP W A S H E R
B earing
re m o v e r
J -6 2 7 8
R e m o v in g b e a rin g
Insta lle r
J -8 0 9 2
In sta lle r
J -2 2 4 0 7
W h e n to o l b o tto m s o n
h o u s in g b e a rin g is
| fu lly in s ta lle d .--------------
In s ta ll P itm a n s h a ft b e a rin g
3B3-29
INSTALL
1. C oat seal lip and w ashe r face
w ith an hydro us calciu m grease.
H O U S IN G A S S E M B L Y
In s p e c t fo r b u r r s _____
N E E D LE B E A R IN G
R e m o v e o n ly if it
n e e d s re p la c in g .
In s ta lle r
J -6 2 1 9
In s ta ll P itm a n s h a ft seals