GMC 1989 Light Duty Truck, Repair Manual, Page: 106 / 998

3B2-4 MANUAL STEERING GEAR
R E M O V E
IN S TA LL
1 L o o s e n lo c k nut U s e p u n c h 1 Install parts as s h o w n
a g a in s t ed g e of slot
2 R e m o v e parts as s h o w n
N O T IC E :
U s e car e that the ball nut d o e s not run
d o w n to either end of the w o r m D a m a g e m ay be d o n e
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 BEARIN G
A DJU STER LOCKNUT
R e m o v e bearing cup
fr o m h o u sin g o nly
if necessary.
Tool A
R e m o v e C u p
Install C u p
D IS A S S E M B L E A S S E M B L E
1. Pry low er bearing retainer 1. Press cup into adjuster
out w ith screwdriver. using Tool A.
2. Install parts as shown.
2. Remove cup using
J 29369-1 pu ller and
slide hammer.
W O R M B E A R IN G
A D J U S T E R
LO W ER W O R M
B E A R IN G C U P
LO W ER W O R M
B E A R IN G
LO W ER B E A R IN G R E T A IN E R
5. D IS A S S E M B L E A N D A SS EM 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 L E A S S E M B L E
1 D i s a s s e m b l e parts as 1 A s s e m b l e p a r t s a s
s h o w n s h o w n
2 C l e a n a n d in s p e c t all 2 R ef e r to Fig A for
p a r t s f o r e x c e s s i v e n u m b e r of ba lls us ed
we ar
BALL NUT
W O R M S H A F T
- - 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
D im A
B a l ls
per c i r c u i t
mm
in
1 0
0 04
25
2 5 0 10
27
5 0
0 2 0 27
F-05903
Figure 3 — M odel 525 — C hart B