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(071)
mate shaft are aligned with the cor-
responding marks on the case. Posi-
tion the upper (cover half) mate
shaft and pinions with marks aligned,
and set the cover half side gear on
top of the four pinions (Fig. 28).
5. While holding the side gear and
clutch pack in the cover half of the
case, install the cover half on the
ring gear half so that the locating
marks on each differential case half
are in alignment (Fig. 28).
6. Install the differential case bolts
and turn them in a few threads.
7. Align the splines of the side
gears and side gear rings by insert-
ing the axle shaft on each side of
the case. Be sure the shaft goes all
the way in to engage both side gear
and side gear ring splines
(Fig.
29).
8. With the axle shafts in posi-
tion, torque the differential case
bolts evenly and alternately to speci-
fications.
9. Remove the axle shafts and
check for proper assembly.
If
the
differential has been properly as-
sembled, each mate shaft should
be tight in its ramp; or, if there is
clearance between the shaft and
the ramp, the clearance should be
equal at all four mate shaft ends.
INSTALLATION OF PINION,
BEARINGS, AND
DIFFERENTIAL CASE
1. Before installing the pinion and
bearings, measure
the differential
case side clearance as outlined in the
following steps.
(a) Turn the axle housing as-
sembly in the fixture so that the
\
FIG.
30-Measuring Differential
Case Side Clearance
PART 4-2- REAR AXLE
FIG.
31-Pinion Rear Bearing
Cup Installation
front end is down. Place dummy
bearings (tool 4205-C) on the dif-
ferential case hubs, and instaH the
case in the housing.
(b) Install the bearing caps in
their correct position as indicated
by the identification marks, and in-
stall the cap retaining bolts finger
tight.
(c) Set up a dial indicator with
its contact point against the back
face of the ring gear as shown in
Fig. 30. Grasp both sides of the
rmg gear firmly
as shown,
and
with a steady pressure move the en-
tire differential assembly in one di-
rection to the limit of its travel.
Adjust the indicator to zero.
(d) In the same manner, move
the differential assembly as far as it
will go in the opposite dire(:;tion.
Note the reading on the dial indi-
cator. This reading indicates the
amount of shims needed behind the
differential side bearings to take up
the
total
clearance
between
the
hearing caps and the case. Record
this reading for use later in the
assembly procedure.
(e) Remove the differential case
from the housing, and remove the
dial indicator and dummy bearings.
2. Install the pinion locating shim
pack, and then install the rear bear-
ing cup (Fig.
31).
If the original
ring gear and pinion is being in-
stalled, usc the original shim pack.
If a new gear set is being installed,
usc a corrected shim pack as ex-
plained under ''Parts Replacement
and Repair"" in this section.
4-15
FIG.
32-Pinion Front Bearing
Cup Installation
3. Turn the front end of the axle
housing up, and install the front
bearing cup (Fig. 32)!
4. The rear face of the pinion
gear (either new or old) should be
lightly stoned to remove any ir-
regularities or burrs before at-
tempting
a
pinion
gear depth
reading.
Turn the housing to a horizontal
FIG.
33-Drive Pinion and Bearing
Assembly Installation
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