GMC 1989 Light Duty Truck Repair Manual page 106

3B2-4 MANUAL STEERING GEAR
R E M O V E
1 L o o s e n lo c k nut U s e p u n c h
a g a in st ed g e of slot
2 R e m o v e parts as s h o w n
U s e car e that the ball nut d o e s not run
N O T IC E :
d o w n to either end of the w o r m
to the e n d s of the ball g u i d e s if the ball nut is a llo w e d
to rotate until s to p p e d at the e n d of the worm
W ORM BEARING
A DJUSTER LOCKNUT
R e m o v e bearing cup
fr o m h o u sin g o nly
if necessary.
R e m o v e C u p
IN S TA LL
1 Install parts as s h o w n
D a m a g e may be d o n e
Tool A
Install C u p
Figure 3 — M odel 525 — C hart B
D IS A S S E M B LE
1. Pry low er bearing retainer
out w ith screwdriver.
2. Remove cup using
J 29369-1 puller and
slide hammer.
W O R M B E A R IN G
A D J U ST E R
LOW ER W ORM
B E A R IN G C U P
LO W ER W O RM
B E A R IN G
LO W ER B E A R IN G R ET A IN ER
5. D ISA S SEM B LE A N D A SSEM B LE
W O R M S H A F T A N D BALL N U T
D IS A S S E M B LE
1 D i s a s s e m b l e parts as
sh o w n
2 C l e a n an d in s p e c t all
p a r t s f o r e x c e s s i v e
we ar
- - I \ B A L L G U I D E S
\ B A L L S
*
/
BALL G U ID E C L A M P
B A L L G U ID E
C L A M P S C R E W S
5.5 N-m (4 FT. LBS.)
A s s e m b l e w o r m s h a ft
D i m e n s i o n A - M e a s u r e land
b e t w e e n ball g r o o v e s
A S SE M B LE
1. Press cup into adjuster
using Tool A.
2. Install parts as shown.
A S SE M B LE
1 A s s e m b l e p a r t s a s
s h o w n
2 R ef er to Fig A for
n u m b e r of balls used
BALL NUT
W O R M SH A F T
D im A
B a l ls
in
mm per c i r c u i t
0 04 25
1 0
2 5 0 10 27
0 2 0 27
5 0
F-05903