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• i n s t a l l Gauge Block Tool SP-5383 a t the end of
Tool SP-5385;
• i n s t a l l Cap Screw Tool SP-536; a n d
• t i g h t e n i t securely w i t h W r e n c h Tool SP-531.
(15) For 9 1/4-inch diameter r i n g gear axles:
• i n s t a l l Gauge Block Tool SP-6020 at t h e end of
Tool SP-526;
• i n s t a l l Cap Screw SP-536; a n d
• t i g h t e n i t securely w i t h W r e n c h Tool SP-531.
(16) For 8 3/8-inch diameter r i n g gear axles, posi-
t i o n Crossbore A r b o r Tool SP-6029 i n t h e differential
bearing bores i n the differential h o u s i n g (Fig. 30).
(17) For 9 1/4-inch diameter r i n g gear axles, posi-
t i o n Crossbore A r b o r Tool SP-6018 i n t h e differential
bearing bores i n the differential housing (Fig. 30).
C e n t e r t h e c r o s s b o r e a r b o r t o o l t o p r o v i d e a n
a p p r o x i m a t e l y e q u a l o p e n s p a c e a t e a c h
b o r e .
P l a c e a p i e c e o f 0.002 i n c h s h i m s t o c k a t e a c h
e n d o f t h e a r b o r t o o l , p o s i t i o n t h e b e a r i n g c a p s
o n t h e a r b o r t o o l a n d i n s t a l l t h e a t t a c h i n g b o l t s .
T i g h t e n t h e c a p b o l t s w i t h
14 N n n (10 f t - l b s )
t o r q u e .
(18) Select ( t r i a l f i t ) a drive p i n i o n gear shaft rear
bearing depth s h i m t h a t w i l l " f i t " between the cross-
bore arbor tool and the gauge block tool (Fig. 30).
T h e d e p t h s h i m " f i t " m u s t b e " s n u g " b u t n o t ex-
c e s s i v e l y t i g h t (e.g., s i m i l a r t o t h e " d r a g " f r i c t i o n
o f a f e e l e r g a u g e b l a d e ) .
Fig. 30 Drive Pinion Gear Shaft
Bearing
Depth
Shim
Selection
D e p t h s h i m s a r e a v a i l a b l e i n 0.001-inch i n c r e -
m e n t s f r o m 0.020 i n c h t o 0.038 i n c h .
(19) Note the etched n u m b e r on the face of the
drive p i n i o n gear (e.g., -0, - 1 , -2, + 1 , 4 - 2 , etc.). The
etched numbers represent 0.001 of-an-inch deviation
f r o m the standard. I f the n u m b e r is "-" (negative),
add t h a t value to the thickness of the depth s h i m se-
lected i n i t e m 20 (above). I f the n u m b e r is " + " (pos-
itive), subtract t h a t value f r o m t h e thickness of the
depth s h i m selected i n i t e m 20 (above). I f the number
is " 0 " , no change is required. E v a l u a t e other drive
p i n i o n gear etched numbers i n a s i m i l a r manner.
(20) Remove the tools from the differential housing.
(21) Position the depth s h i m selected above on the
drive p i n i o n gear shaft followed by the rear bearing
(ensure t h a t the d r i v e p i n i o n gear contact surface,
the bearing and the depth s h i m are clean and w i t h -
out foreign particles). Use B e a r i n g I n s t a l l a t i o n Tool
C-4040 for 8 3/8-inch diameter r i n g gear axles or
Tool C-3095-A for 9 1/4-inch diameter r i n g gear axles
and force the rear b e a r i n g onto the drive p i n i o n gear
shaft. A n arbor press can be used w i t h the i n s t a l l a -
t i o n tool (Fig. 31).
PINION GEAR
Fig. 31 Shaft
Rear Bearing
Installation
(22) Lubricate the drive p i n i o n gear shaft front and
rear bearings w i t h gear l u b r i c a n t .
(23) Insert the d r i v e p i n i o n gear shaft w i t h the
rear bearing into and t h r o u g h the differential hous-
i n g bore. Position t h e bearing "preload" torque "re-
placement" collapsible spacer at t h e end of the drive
p i n i o n gear shaft. Position drive p i n i o n gear shaft
front bearing at t h e end of t h e drive p i n i o n gear
shaft.
(24) I n s t a l l the (axle) yoke on 8 3/8-inch diameter
r i n g gear axles w i t h Removal/Installation Tool
C-
3718 and H o l d i n g Tool C-3281. For 9 1/4-inch diam-
eter r i n g gear axles, use Removal/Installation Tool
C-496 and H o l d i n g Tool C-3281.
B e c a u s e o f t h e f r o n t b e a r i n g " i n t e r f e r e n c e f i t "
o n t h e d r i v e p i n i o n g e a r s h a f t , i t is n e c e s s a r y
t o
use t h e t o o l s ( a b o v e ) t o c o r r e c t l y " s e a t " t h e f r o n t
b e a r i n g o n t h e d r i v e p i n i o n g e a r s h a f t ( F i g . 32).
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