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 TM 10-3930-633-34
(7) Differential bearings may be pressed off
(1) Match mark differential bearing caps and
the case using an arbor press (fig. 10-9).
housing as shown in figure 10-7 prior to removal.
b. Cleaning and Inspection.
(1) Clean case and housing parts in solvent,
Federal Specification P-D-680.
(2) Clean each bearing in a container filled
(2) Cut lockwire and remove bearing cap-
with (clean) solvent, Federal Specificication P-D-
screws, bearing caps, and adjusting nuts.
680. Wash bearings thoroughly. Remove bearings
(3) Lift out differential as shown in figure 10-
from solvent and strike larger side of cone flat
8.
against a block of wood to dislodge solidified
particles of lubricant. Repeat above operation
until bearings are thoroughly clean. Bearings
must be completely free from grease, oil and
solidified particles of lubricant.
(3) After washing bearings, blow them dry
with compressed air. Be careful to direct air
pressure across bearing to avoid spinning. DO
NOT SPIN BEARINGS. Bearings may be slowly
rotated by hand to facilitate drying procedure.
(4) Inspect bearings carefully to determine if
they are in good condition and suitable for further
service.
(5) When bearings a r e clean and dry,
lubricate them with new engine oil. Rotate the
bearing by hand, and check for wear or rough
spots.
(6) Carefully inspect rollers, cages and cups
for wear, chipping or nicks.
(4) Remove differential pinion, with bearings
(7) If any defects are found, the bearings
assembled, from differential housing. If bearings
should be scrapped and replaced with new ones at
are to be removed, press the bearings off in an
reassembly.
arbor press.
(8) Examine the gears for cracked, chipped
(5) Drive side gear pin out of differential
or scored teeth. If any of these conditions exist,
case, and remove differential pinions side gears
the faulty part should be replaced with a new
and thrust washers.
part.
(6) Do not remove ring gear from case unless
(9) If magna-flux process is available, use
ring gear is damaged.
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