Table of Contents
Advertisement
2 - 38
FRONT SUSPENSION
•
Fig. 43 Differential Case "End Play" Measurement
e x i s t s b e t w e e n t h e d i f f e r e n t i a l b e a r i n g s a n d t h e
d i f f e r e n t i a l case). T h e a c t u a l t o t a l s h i m t h i c k -
ness w i l l b e d e t e r m i n e d
d u r i n g t h e r i n g
g e a r
" b a c k l a s h " a d j u s t m e n t ( a f t e r i n s t a l l a t i o n o f t h e
d r i v e p i n i o n g e a r s h a f t ) .
(18) Remove the d i a l indicator tool and the p i l o t
stud f r o m the differential housing.
(19) Remove the differential bearing caps.
(20) Position Spreader Tool W-129-A on the differ-
e n t i a l housing w i t h the tool dowel pins "seated" i n
the locating holes ( F i g . 42). I n s t a l l t h e holddown
clamps
a n d t i g h t e n t h e tool t u r n b u c k l e
"finger-
t i g h t " .
(21) I n s t a l l a pilot stud a t the left side of the dif-
ferential housing. A t t a c h D i a l Indicator Tool C-3339
to the differential housing (via the p i l o t stud) w i t h
the indicator plunger s l i g h t l y "loaded" against t h e
opposite side of the differential housing (Fig. 42).
"Zero" the d i a l indicator pointer.
CAUTION: Do not exceed the specified separation
distance when separating the differential housing. If
the housing is over-separated, it could be distorted
or damaged, which would necessitate replacement.
(22) T i g h t e n the spreader tool t u r n b u c k l e (Fig. 42)
and separate the differential housing only enough t o
remove t h e differential case from the housing. Sepa-
r a t e t h e d i f f e r e n t i a l h o u s i n g a m a x i m u m
d i s -
t a n c e o f 0.38 m m (0.015 i n ) w i t h t h e s p r e a d e r
t o o l . Measure the separation distance w i t h the d i a l
indicator (Fig. 42) as the housing is being separated.
(23) Remove t h e d i a l indicator tool a n d the p i l o t
stud (Fig. 42) w h e n t h e differential h o u s i n g has been
separated sufficiently t o remove the differential case
from the housing.
(24) Remove t h e differential case f r o m the differen-
t i a l housing.
(25) Remove t h e holddown clamps a n d the spreader
tool from the differential housing (Fig. 42).
(26) I n s t a l l a replacement
seal i n t h e right-side
axle shaft tube w i t h Tool DD-1243-B.
DRIVE PINION GEAR DEPTH
INFORMATION
D r i v e p i n i o n gear shafts and r i n g gears are sup-
plied as "matched sets" only. T h e i d e n t i f y i n g n u m -
bers for both the drive p i n i o n gear a n d t h e r i n g gear
are etched i n t o t h e face o f each gear (Fig. 44). I n ad-
dition, either a plus (" + ") number, a m i n u s
("-")
number or a zero ("0") is also etched i n t o the face o f
the drive p i n i o n gear. T h i s n u m b e r indicates t h e
amount ( i n thousandths o f a n inch) t h a t t h e drive
pinion gear depth o f mesh varies f r o m t h e standard
depth " s e t t i n g " o f 2.625 inches (66.68 m m ) for Model
44 axles. The standard depth of mesh provides t h e
best teeth contact between t h e d r i v e p i n i o n gear
teeth and the r i n g gear teeth. The d e p t h variance of
a drive p i n i o n gear can be either greater ( + ), zero (0)
or less t h a n (-) the standard depth.
DRIVE PINION
Fig. 44 Drive Pinion Gear ID Numbers
The standard depth is the distance (Fig. 45) f r o m
the centerline o f t h e axle shaft/ring gear to the face
of the drive p i n i o n gear. F o r a Model 4 4 axle, t h e
standard depth/distance is 2.625 inches (66.68 m m ) .
Compensation for the depth variance i s achieved by
shims placed adjacent t o the drive p i n i o n gear shaft
rear bearing cup (Fig. 46).
F o r
E x a m p l e :
• o n e c o m p l e t e " p a c k "
o f d e p t h s h i m s i s r e -
q u i r e d i f t h e d e p t h v a r i a n c e i s " 0 " ;
• i f t h e d e p t h v a r i a n c e i s " + 3 " ( m + 8), t h e d r i v e
Advertisement
Table of Contents
