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SPREADER
TOOLD-167
Fig. 35 Differential Housing Separation
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.
(3) T i g h t e n t h e spreader tool t u r n b u c k l e ( F i g . 35)
and separate t h e differential housing only enough t o
i n s t a l l t h e differential case i n the housing. S e p a 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 . Mea-
sure t h e separation distance w i t h t h e d i a l indicator
(Fig. 35) as t h e housing is being separated.
(4) Remove t h e d i a l indicator tool a n d t h e p i l o t
stud (Fig. 35) when the differential housing has been
separated sufficiently t o i n s t a l l t h e differential case
i n t h e housing.
(5) I n s t a l l Master Bearing Tools D-117 o n t h e dif-
ferential case hubs and position t h e case i n t h e dif-
ferential housing w i t h t h e r i n g gear teeth "meshed"
w i t h t h e drive p i n i o n gear teeth. I f necessary, " r o c k "
the r i n g gear to "mesh" the gear teeth.
(6) I n s t a l l a pilot stud a t t h e r i g h t side of the dif-
ferential housing. A t t a c h D i a l Indicator Tool C-3339
to t h e differential housing ( v i a t h e 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
back of the r i n g gear (Fig. 36). Ensure t h a t t h e r i n g
gear teeth and the drive p i n i o n gear teeth are t i g h t l y
"meshed" and "zero" t h e d i a l indicator pointer.
(7) Insert a small p r y bar between t h e bearing cap
and t h e left side of the differential case. P r y t h e dif-
ferential case/ring gear as far as possible t o w a r d t h e
r i g h t side of the differential housing a n d away f r o m
Fig. 36 Ring Gear "Backlash" Measurement
the drive p i n i o n gear (Fig. 36). Observe t h e d i a l i n -
dicator plunger
t r a v e l
distance
indicated b y t h e
pointer.
(8) Repeat the measurement several times u n t i l t h e
indicated plunger t r a v e l distance is consistently t h e
same for each measurement
a n d t h e n record t h e
travel distance.
T h e m e a s u r e m e n t
a b o v e indicates t h e s h i m
t h i c k n e s s n e c e s s a r y to eliminate t h e r i n g g e a r
" b a c k l a s h " . S u b t r a c t this t h i c k n e s s from t h e dif-
ferential case " z e r o " " e n d - p l a y " s h i m t h i c k n e s s .
T h e r i n g gear " b a c k l a s h " s h i m s m u s t b e p l a c e d
on the h u b at the r i n g g e a r side of the differen-
tial c a s e b e t w e e n t h e differential c a s e a n d the
differential
bearing.
(9) Remove t h e d i a l indicator tool a n d t h e p i l o t
stud (Fig. 36) f r o m t h e differential housing.
(10) Remove t h e differential bearing caps.
(11) Position Spreader Tool D-167 on t h e differen-
t i a l housing w i t h t h e tool dowel pins "seated" i n t h e
locating holes (Fig. 35). I n s t a l l t h e holddown clamps
and t i g h t e n t h e tool t u r n b u c k l e " f i n g e r - t i g h t " .
(12) I n s t a l l a p i l o t stud a t t h e left side o f the dif-
ferential housing. A t t a c h D i a l Indicator Tool C-3339
to t h e differential housing ( v i a t h e pilot stud) w i t h
the indicator plunger s l i g h t l y "loaded" against t h e
opposite side of t h e differential housing ( F i g . 25).
"Zero" t h e dial 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.
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