Table of Contents
Advertisement
•
STEERING
1 9 - 3 5
Fig. 35 Adjustment Cap Installation
(12) Lubricate t h e p i t m a n shaft adjustment screw
cover gasket w i t h petroleum j e l l y and place i t on the
cover. Ensure t h a t the rubber seal i n the gasket is
properly "seated" i n the cover groove.
(13) Position t h e cover over the p i t m a n shaft and
t h r e a d the cover onto t h e adjustment screw u n t i l i t
contacts the p i t m a n shaft.
(14) I n s t a l l the p i t m a n shaft w i t h the long, center
sector tooth meshing w i t h t h e rack piston center
groove.
(15) Ensure t h a t t h e adjustment screw cover gasket
is correctly i n place before attaching the cover t o the
steering gear housing. I n s t a l l the cover lockwashers
and bolts. T i g h t e n the bolts w i t h 6 1 N-m (45 ft-lbs)
torque.
(16) Thread the adjustment screw locknut half-way
on t h e adjustment screw. I f necessary, insert a n
A l l e n wrench i n t o the adjustment screw head t o pre-
v e n t i t from t u r n i n g w h i l e t h r e a d i n g the n u t on i t .
(17)
I n s t a l l t h e e n d p l u g i n t h e rack piston.
T i g h t e n the p l u g w i t h 68 N n n (50 ft-lbs) torque.
(18) Lubricate t h e steering gear housing end-plug
O - r i n g seal w i t h power steering f l u i d and position i t
on the end p l u g .
(19) I n s t a l l and "seat" the end p l u g i n the steering
gear housing. I f necessary, tap the end p l u g l i g h t l y
w i t h a plastic m a l l e t to "seat" i t properly.
(20) I n s t a l l t h e end-plug r e t a i n i n g r i n g w i t h t h e
r i n g end gap n o t a l i g n e d w i t h the hole inside t h e
steering gear housing. Tap l i g h t l y on the p l u g t o en-
sure t h a t the r i n g is "seated" properly.
(21) Adjust the wormshaft bearing "preload" torque
J8919-58
Fig. 36 Adjustment Cap Index Mark
and t h e p i t m a n shaft overcenter drag torque accord-
i n g t o t h e procedures listed w i t h i n P o w e r S t e e r i n g
G e a r — A d j u s t m e n t s O n B e n c h .
POWER STEERING
GEAR-ADJUSTMENTS
ON
BENCH
A f t e r assembly, the steering gear requires t w o ad-
j u s t m e n t s :
• w o r m s h a f t bearing "preload" torque, and
• p i t m a n shaft overcenter drag torque.
CAUTION: Adjust the steering gear in the following
order only. Always adjust the wormshaft bearing
"preload" torque first, and then adjust the pitman
shaft overcenter drag torque last. Failure to do so
could result in damage to the gear or improper
steering response.
WORMSHAFT BEARING PRELOAD TORQUE-ADJUSTMENT
(1) T i g h t e n the wormshaft bearing adjustment cap
w i t h a spanner wrench u n t i l i t is "seated" i n t h e
steering gear housing. Approximately 27 N»m (20 ft-
lbs) torque is required t o "seat" the cap i n the hous-
i n g .
(2) Score a n index m a r k on the steering gear hous-
i n g adjacent t o one of the spanner wrench t i g h t e n i n g
holes i n t h e adjustment cap (Fig. 36).
(3) Measure counterclockwise 4.7 to 6.3 m m (3/16
to 1/4 i n ) f r o m the index m a r k and score a n adjust-
m e n t reference m a r k on the housing (Fig. 37).
(4) Rotate the adjustment cap counterclockwise u n -
t i l t h e spanner wrench t i g h t e n i n g hole i n t h e cap
(adjacent t o the index m a r k ) is aligned w i t h the ad-
j u s t m e n t reference m a r k on the housing.
Advertisement
Table of Contents
