Chevrolet 1988 Light Duty Truck Repair Manual page 106

3B2-4 MANUAL STEERING GEAR
REMOVE
1 Loosen lock nut Use punch
against edge of slot
2 Remove parts as shown
N O TICE: Use care that the ball nut does not run
dow n to either end ol the w orm Damage may be done
to the ends ol the ball gu id es if the ball nut is allow ed
to rotate u n til stopped at the end of the worm
W ORM BEARING
A D JU S TER LO C K N U T
h
BRASS
Remove bearing cup
fro m housing only
if necessary.
Remove Cup
INSTALL
i Install parts as shown
r -
Tool A
Install Cup
Figure 3— Model 525 — Chart B
DISASSEMBLE
1- Pry lo w e r b e a rin g re ta in e r
o u t w ith s c re w d riv e r.
. R e m o ve c u p u s in g
J 29369-1 p u lle r and
s lid e h a m m e r.
W O R M B E A R IN G
A D JU S T E R
LO W E R W O R M
B E A R IN G C U P
LO W E R W O R M
B E A R IN G
LO W E R B E A R IN G R E T A IN E R
5. DISASSEMBLE AND ASSEMBLE
WORMSHAFT AND BALL NUT
DISASSEMBLE
1 D isassem ble parts as
show n
2 Clean and inspect all
p a r ts fo r e x c e s s iv e
wear
_ w . \ B A L L g u i d e s
A *
\ B A L LS
/ B A L L G U ID E C L A M P
B A L L G U ID E
C L A M P SCREW S
5.5 N m (4 F T . LBS.)
A ssem ble w orm shaft
I--------------------------------------
| D im en sion A -M easure land
I betw een ball grooves
W O R M S H AFT
Fig A
ASSEMBLE
1. P re s s c u p in to a d ju s te r
u s in g T oo l A
2 In s ta ll p a rts as s h o w n .
ASSEMBLE
1 A s s e m b le p a r ts as
shown
2 Refer to Fig A for
nu m ber of balls used
B A L L N U T
W O R M S H A F T
Dim A
B alls
mm in per c irc u it
1 0 0 04 25
2 5 0 10 27
0 2 0 27
5 0
F-05903