Download Group 19 STEERING GEAR

8 — STEERING
GEAR
N O T E : Assemble p a r t s w i t h o u t l u b r i c a t i o n . L u b r i cation should be done a f t e r adjustments are completed. Needle bearings are grease-packed
from
factory.
TOOL
I f either o f the w o r m t h r u s t roller bearings are
damaged, replace b o t h bearings. Use new o i l seals.
I f gear shaft bearings have been removed, i n s t a l l
the gear shaft o u t e r b e a r i n g i n t o t h e h o u s i n g w i t h
Tool C-3786 ( F i g . 4 ) . D r i v e t h e outer (lower) beari n g t o w i t h i n 1/16 inch or end o f counterbore. D r i v e
t h e i n n e r (upper) bearing ( F i g . 5) flush w i t h t h e
bore face w i t h Tool C-3786.
( 1 ) I n s e r t the w o r m and t h e tube i n t o t h e h o u s i n g
w i t h bearings and cups.
( 2 ) I n s t a l l shims and lower h o u s i n g cover, m a k i n g
sure bearings are seated.
N O T E : When tightening the cover, turn the worm
tube to be sure no bind exists.
( 3 ) F i n a l t i g h t e n i n g of t h e cover screws should
cause end p l a y t o disappear w i t h torque o f % t o %
pound r e q u i r e d t o r o t a t e t h e tube, w h e n measured
w i t h a p u l l scale applied at t h e r i m of the steering
wheel. A d d or remove shims i n t h e event a b i n d or
excessive end play occurs. Shims are available i n
.003, .006 and .011 inch.
Fig. 5—Installing G e a r Shaft Housing Inner Bearing
end play i n t h e gear shaft is gone. Rotate t h e wheel
t o one end of i t s t r a v e l and apply a s p r i n g scale.
W i t h p u l l applied a t r i m o f t h e steering wheel,
tension should measure f r o m 1 t o 2 pounds. T h e
greatest tension should be f e l t as t h e wheel is r o t a t e d
past the center position ( h i g h p o i n t ) . A d j u s t t h e
t o r q u e load b y t u r n i n g t h e a d j u s t i n g screw i n or out
as r e q u i r e d .
( 8 ) I n s t a l l t h e lock n u t and t i g h t e n w h i l e h o l d i n g
t h e a d j u s t i n g screw.
( 9 ) F i l l the gear housing w i t h S A E 90 gear l u b r i cant and check f o r leaks.
( 4 ) I n s t a l l t h e gear shaft.
( 5 ) Before i n s t a l l i n g the cover, t u r n
screw a l l t h e w a y out.
adjusting
( 6 ) Place s t e e r i n g wheel on tube and r o t a t e
s t e e r i n g wheel i n one d i r e c t i o n t o t h e end o f i t s
t r a v e l . R o t a t e t h e wheel i n t h e o t h e r d i r e c t i o n t o t h e
end o f i t s t r a v e l , c o u n t i n g t h e t u r n s . Rotate t h e
wheel back / o f t h e f u l l n u m b e r o f t u r n s . T h i s is
the exact center of t r a v e l ( h i g h p o i n t ) .
l
2
( 7 ) T u r n t h e a d j u s t i n g screw (clockwise) u n t i l a l l
d. Installation
( 1 ) E n t e r t h e steering gear assembly i n t o t h e
engine c o m p a r t m e n t and t h r o u g h t h e opening i n t h e
floor panel. ~ I n s t a l l t h e h o u s i n g a t t a c h i n g bolts w i t h
t h e " D " bar between t h e f r a m e and the f o r w a r d
m o u n t i n g pad o f the housing (flat o f " D " against
frame, F i g . 6).
( 2 ) I n s t a l l t h e flat washers, spherical washers and
n u t s , b u t do n o t t i g h t e n . Concave side of spherical
STEERING
GEAR
HOUSING
FLAT
TOOL
WASHER
SPHERICAL
SPACER
i f
60 x 17
Fig. 4—iris^cfHrig G e a r Shaft He-using Outer
Bearing
Fig. #—Steering G e a r (Mounting on Frame)