Dodge D150 1990 Service Manual page 195

DRIVE
Fig. 21 Shim Locations
p i n i o n g e a r w i l l b e d e c r e a s e d f r o m 3.128 i n c h e s
(79.45 m m ) t o t h e s t a n d a r d d e p t h o f 3.125 i n c h e s
(79.37 m m ) ; o r
• 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
p i n i o n g e a r w o u l d r e q u i r e 0.003 i n c h (0.08 m m )
m o r e i n s h i m t h i c k n e s s t h a n a d e p t h v a r i a n c e o f
" 0 " (i.e., o n e c o m p l e t e s h i m " p a c k " p l u s 0.003
i n c h o r 0.08 m m ) ;
• b y i n c r e a s i n g t h e t h i c k n e s s o f t h e s h i m s 0.003
i n c h (0.08 m m ) , t h e d e p t h p o s i t i o n o f t h e d r i v e
p i n i o n g e a r w i l l b e i n c r e a s e d f r o m 3.122 i n c h e s
(79.34 m m ) t o t h e s t a n d a r d d e p t h o f 3.125 i n c h e s
(79.37 m m ) .
I f t h e o r i g i n a l drive p i n i o n gear shaft a n d r i n g
gear set w i l l be i n s t a l l e d b u t t h e depth shims m u s t
be replaced, measure t h e thickness of t h e o r i g i n a l
depth shims a n d " b u i l d " a replacement " p a c k " o f
depth s h i m s w i t h t h e same thickness.
I f e q u i p p e d , t h e o i l s l i n g e r l o c a t e d b e t w e e n t h e
r e a r b e a r i n g a n d t h e t h r u s t f a c e o f d r i v e p i n i o n
g e a r m u s t b e m e a s u r e d a n d t h e t h i c k n e s s i n -
c l u d e d w i t h t h e t o t a l s h i m " p a c k " t h i c k n e s s .
I f t h e o r i g i n a l drive pinion/ring gear set is not re-
usable, t h e depth s h i m thickness for t h e replacement
drive p i n i o n gear m u s t be determined before i n s t a l l -
i n g t h e d i f f e r e n t i a l case i n t h e housing.
I f a replacement gear set is being installed, note
the d e p t h variance etched i n t o b o t h t h e o r i g i n a l a n d
the replacement drive p i n i o n gear, and alter t h e
thickness of t h e o r i g i n a l depth shims to compensate
for t h e difference i n t h e depth variances. Refer to t h e
D r i v e P i n i o n Gear D e p t h Variance chart.
F o r e x a m p l e :
• i f t h e o r i g i n a l d r i v e p i n i o n g e a r h a s a d e p t h
v a r i a n c e o f " + 2 " ( m + 5 ) a n d t h e r e p l a c e m e n t
d r i v e p i n i o n g e a r h a s a d e p t h v a r i a n c e o f " - 2 "
(m-5), a d d 0.004-inch (0.10-mm) t h i c k n e s s t o t h e
o r i g i n a l d e p t h s h i m s .
I n d i v i d u a l depth shims are available i n 0.003-inch,
0.005-inch, 0.010-inch, a n d 0.030-inch (0.08-mm,
0.13-mm, 0.25-mm, a n d 0.76-mm) thicknesses.
DRIVE PINION GEAR DEPTH VARIANCE
Original Pinion
G e a r Depth
V a r i a n c e
Replacement Pinion G e a r Depth V a r i a n c e
Original Pinion
G e a r Depth
V a r i a n c e - 4 - 3
- 2
-1
0
+ 1 + 2 +3 +4
+4
+ 0.008 + 0.007
+ 0.006 + 0.005 + 0.004 + 0.003 + 0.002 + 0.001 0
+3
+ 0.007 + 0.006
+ 0.005 + 0.004
+ 0.003
+ 0.002 + 0.001 0
- 0 . 0 0 1
+2
+ 0.006 + 0.005
+ 0.004
+ 0.003 + 0.002 + 0.001 0
- 0 . 0 0 1 - 0 . 0 0 2
+ 1
+ 0.005 + 0.004
+ 0.003 + 0.002 + 0.001 0
- 0 . 0 0 1 - 0 . 0 0 2 - 0 . 0 0 3
0 + 0.004 + 0.003
+ 0.002 + 0.001
0
- 0 . 0 0 1 - 0 . 0 0 2 - 0 . 0 0 3
- 0 . 0 0 4
-1
+ 0.003
+ 0.002
+ 0.001 0 - 0 . 0 0 1 - 0 . 0 0 2 - 0 . 0 0 3
- 0 . 0 0 4 - 0 . 0 0 5
- 2
+ 0.002 + 0.001
0
- 0 . 0 0 1 - 0 . 0 0 2
- 0 . 0 0 3
- 0 . 0 0 4 - 0 . 0 0 5
- 0 . 0 0 6
- 3
+ 0.001
0
- 0 . 0 0 1 - 0 . 0 0 2 - 0 . 0 0 3 - 0 . 0 0 4 - 0 . 0 0 5 - 0 . 0 0 6
- 0 . 0 0 7
- 4
0
- 0 . 0 0 1
- 0 . 0 0 2 - 0 . 0 0 3
- 0 . 0 0 4
- 0 . 0 0 5
- 0 . 0 0 6 - 0 . 0 0 7 - 0 . 0 0 8
J8902-46