SECTION 8
FINAL DRIVE AND TRANSFER CASE
NOTE: Parts cleaned in solution tanks or with
alkali cleaners should be thoroughly
rinsed after cleaning to remove all
traces of alkali.
CAUTION: Exercise care to avoid skin rashes
and inhalation of vapors during
cleaning process used.
c. Parts should be completely dried im-
mediately after cleaning.
8-32. INSPECTION.
a. Inspect all bearings, cups and cones,
including those not removed from parts of the
drive unit. Replace if rollers or cups are worn,
pitted or damaged in any way. Remove parts
needing replacement with a puller or press.
Avoid the use of drifts and hammers.
b. Inspect hypoid gears for wear or damage.
Gears which are worn, ridged, pitted or scored
should be replaced. When necessary to replace
either the pinion or ring gear of the hypoid set,
the gear set should be replaced.
c. Inspect the differential assembly for the
following:
(1). Pitted, scored or worn thrust surfaces of
differential case halves, thrust washers,
spider trunions and differential gears. Thrust
washers must be replaced in sets. The use
of a combination of used and new washers
will result in premature failure.
(2). Wear or damage to the differential
pinions and side gear teeth.
FIGURE 8-30.
d. Inspect differential shafts for twisted or
c r a c k i n g splines and any other signs of
d. Insert pinion and bearing assembly in
impending failure.
pinion cage and position spacer combination
over the pinion shaft.
8-33. REASSEMBLY.
e. Press the front bearing firmly against the
8-34. REASSEMBLY OF PINION SHAFT.
spacer (see figure 8-31). Rotate cage several
revolutions to assure normal bearing contact.
a. Press the roller bearing firmly against the
pinion shoulders with a sleeve that will bear
NOTE: Bearing preload adjustment is only
only on the bearing inner race (see figure 8-30).
made if new bearings are installed.
Install the lock ring and squeeze the ring into
the pinion shaft groove.
8-35. PINION BEARING PRELOAD.
b. Press the inner tapered bearing (see
a. While in the press under pressure, check
figure 8-30) on the shaft. Press bearing cups
the bearing preload with one of the following
firmly against bearing shoulders in the cage.
c. Lubricate bearing and cups with light
(1). Wrap a soft wire around the cage and
machine oil.
pull on a horizontal line with a pound scale
8-10.
