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3-20
REAR AXLE
and mesh the pinion gears with the side gears, having
the pinion gears exactly 180 degrees apart.
(3) Rotate the gears to align the pinion gears and
washers with the shaft holes in the case.
(4) Install the pinion gear shaft with care so as not
to damage the thrust washers and to have the hole
in the shaft aligned with the lock pin hole in the case.
(5) Install the lock pin from the drive gear teeth
side of the case.
(6) Position the drive gear on the case to separate
the points of maximum runout 180" and start all
bolts through the case into the drive gear, finger
tight.
(BOLTS ARE LEFT HAND THREAD.)
(7) Tap the drive gear against the flange. Tighten
the bolts to 55 foot-pounds torque.
(8) Install the bearing cones with driver, Tool
C-
3716, (Fig. 52).
Pinion Bearing Cup lnstallation
The rear axle gauge Tool C-3715 is used to install
the pinion bearing cups as well as to determine the
pinion depth of mesh, (Fig. 53).
(1) Start both bearing cups into the carrier.
(2) Place the rear spacer SP-3244 on main tool.
Seat the pinion rear bearing on the spacer and hold
the tool in housing.
(3) Place centralizing sleeve SP-3245 on the tool
and place the pinion front bearing cone on the cen-
tralizing sleeve, then the tool compression sleeve, cen-
tralizing washer and nut.
(4) Draw the cups tightly against the housing shoul-
ders by tightening the nut while holding the compres-
sion sleeve from turning with Tool (2-3281. Permit
the tool to turn to several rotations during the tight-
ening operation. Leave the tool in the carrier for de-
termining depth of mesh.
Drive Pinion Depth of Mesh
(Using Tool c-3715)
(1) With the main tool left in the carrier after in-
T O O L 4 1
i
C R O S S BORE ARBOR
COMPRESSION
Fig. 53-Pinion
Setting Gauge Tool
stalling the pinion bearing cups, loosen the tool nut
and retighten to produce 15 to 25 inch-pounds of
turning torque. Attach the gauge block to the main
tool.
(2) Place the cross bore arbor in the carrier and
install the caps. Tighten the cap bolts lightly.
(3) Select a bearing spacer washer which will
fit
between the arbor and the gauge block when the
washer is flat on the block. The fit should have a defi-
nite drag, similar to the pull of a feeler gauge. Should
a washer have a little drag and the next thicker wash-
er will not pass through, select the thinner washer,
(Fig. 54).
The selected washer is the proper one
for this car-
rier. It
would
be
the proper one for installation with a
pinion marked
-0.
If the pinion has a +2, marking,
select a washer that many thousandths
thinner
for
installation. If the pinion has a -2, select a washer
that many thousandths
thicker
for installation. Treat
other pinion markings in a similar manner. Spacer
washers are available in .001 inch variations from
.084 to .lo0 inch.
Pinion lnstallation and Bearing Preload
(4) Remove the tool from the carrier.
Pinion spacer washers
are
chamfered on one side
' I l r r c
NY1030
Fig. 524nstalling Differential Bearing
SPACER (SELECTIVE)
NY 1027
Fig. 54--Mearuring Housing for Pinion Spacer Thickness
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