Jeep 1987 Wrangler Workshop Manual page 931

REAR AXLE
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STANDARD DIFFERENTIAL OVERHAUL
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Remove the side gears (1), pinions (3) and
thrust washers (2) and (4) from the differential
case. Roll the pinions around until they can be
removed through the case opening. Then re-
move the side gears and all the thrust washers.
Cleaning and Inspection
Clean all of the differential components in sol-
vent. Use compressed air to dry all parts except
the bearings. Dry the bearings with shop towels
only.
Examine each component for wear or damage.
Inspect the bearings and bearing cups. Replace
bearings and races as a set if either part is
galled, worn, cracked, flat spotted or scored.
Inspect the differential side and pinion gears.
Replace any gear that is worn, cracked,
chipped or broken.
Inspect the ring and pinion gears. Replace the
gears as a set if either is worn or damaged.
Inspect the differential case. Replace the case if
cracked or damaged.
Service and Adjustment Information
Pinion gear depth must be measured and ad-
justed before installing the differential in the ax-
le housing. Depth is controlled by a shim (14)
installed between the pinion rear bearing cup
(13) and the axle housing (A).
A
84128A
The ring gear (10) and pinion gear (11) are ser-
viced as a matched set only. They are identified
as a matched set by numbers etched on the
ring and pinion gears.
The first two numbers (A) on each gear identify
them as a matched set. The second number (B)
on the pinion gear is the pinion depth variance.
It indicates the amount (in thousandths of an
inch) that the set varied from the standard set-
ting of 2.095 inches (53.21 mm). The variance
may be a plus or minus figure.
mi