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REAR AXLE
3-7
Fig. 20-Checking
Drive Gear Mounting Flange Runout
HU
NOTE:
The drive gear attaching screws have left
hand threads; turn clockwise to loosen.
(2) Remove the assembly from the vise and with a
fibre mallet, tap the drive gear off the case.
(3) If the drive gear runout was found to be more
than
.005
inch, test the case as follows: Install the
differential with bearing cups in the carrier.
(4) Install the bearing caps, attaching bolts and
bearing adjusters. Snug the bearing cap bolts down
lightly and screw in both adjusters with spanner
wrench Tool C-406A.
(5) Tighten the support cap bolts and adjusters
sufficiently to prevent any end play in the bearings.
(6) Secure dial indicator Tool (2-430 or C-3339 to
the differential carrier flange so pointer of indicator
squarely contacts the drive gear surface of the differ-
ential case flange between the outer edge of the flange
and the drive gear bolt holes, (Fig. 20).
(7)
Rotate the differential several complete revo-
lutions while noting the total indicator reading. This
reading must not exceed .003 inch runout. If the run-
out is in excess of
.003
inch, the differential case must
be replaced.
(8) Measure the side gear clearances between the
gear and the case, (Fig. 21). Clearances should be
from .001
to
.012 inch. If the clearance exceeds .012
inch, install new thrust washers.
(9) From the back side of the drive gear flange,
(8.75 inch gear) drive the differential pinion shaft lock
pin out of the case with a flat nose drift and hammer.
(On the 8.25 inch gear, the lock pin is driven out from
the opposite side.) The lock pin is a
%
inch hollow
split type pin. (The hole is reamed only part way
through, making it necessary to remove the lock pin
from one direction.)
(10) Drive the pinion shaft out with a brass drift
and remove the axle drive shaft thrust block.
(11) Rotate one differential side gear until each
pinion appears at the large opening of the case. Re-
Fig.
2
I-Measuring
Differential Gear Clearance
move each pinion and thrust washer at that time.
thrust washers.
(12)
Remove the two differential side gears and the
CLEANING AND INSPECTION
(1) Clean all parts in fast evaporating mineral spir-
its or a dry cleaning solvent and with the exception
of the bearings, dry with compressed air.
Fig. 22-Removing
Differential Bearings
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