Jeep Grand Cherokee WK. Manual — part 75
PINION SEAL
REMOVAL
1. With vehicle in neutral, position vehicle on hoist.
2. Mark a reference line across the axle flange (3)
and propeller shaft flange (4).
3. Remove propeller shaft
4. Remove brake calipers and rotors to prevent any
drag.
5. Rotate flange three or four times and verify flange
rotates smoothly.
6. Measure torque to rotating pinion flange (1) with a
inch pound torque wrench (2). Record reading for
installation reference.
7. Hold
pinion
flange
with
Wrench
C-3281
and
remove pinion nut and washer.
8. Remove flange with two jaw puller.
9. Remove pinion seal with a seal pick or slide-ham-
mer mounted screw.
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REAR AXLE - C213R
WK
INSTALLATION
1. Apply a light coating of gear lubricant on the lip of
pinion seal.
2. Install new pinion seal with Installer C-3972A (1)
and Handle C-4171 (2).
3. Install flange on the end of the shaft with the refer-
ence marks aligned.
4. Install flange on pinion shaft with Installer C-3718
and Wrench C-3281.
5. Install pinion washer and a new pinion nut. The
convex side of the washer must face outward.
CAUTION: Do not exceed the minimum tightening
torque
when
installing
the
companion
flange
retaining nut at this point. Failure to follow these
instructions can damage the collapsible spacer or
bearings.
6. Hold flange with Wrench C-3281and tighten pinion
nut to 285 N·m (210 ft. lbs.). Rotate pinion several
revolutions to ensure bearing rollers are seated.
7. Rotate pinion flange (1) with an inch pound torque
wrench (2). Rotating torque should be equal to the
reading recorded during removal plus an additional
0.56 N·m (5 in. lbs.).
CAUTION: Never loosen pinion nut to decrease
pinion bearing rotating torque and never exceed
specified preload torque. If rotating torque is
exceeded, a new collapsible spacer must be
installed. Failure to follow these instructions can
damage the collapsible spacer or bearings.
8. If rotating torque is low use Holder 6719, to hold
flange and tighten pinion nut in 6.8 N·m (5 ft. lbs.)
increments until proper rotating torque is achieved.
NOTE: The seal replacement is unacceptable if
final pinion nut torque is less than 285 N·m (210 ft.
lbs.).
NOTE: The bearing rotating torque should be constant during a complete revolution of the pinion. If the
rotating torque varies, this indicates a binding condition.
9. Install propeller shaft.
10. Install rear brake components.
WK
REAR AXLE - C213R
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DIFFERENTIAL
REMOVAL
1. Remove differential cover.
2. Remove axle shafts.
3. Remove ABS sensor from housing.
4. Mark differential housing and bearing caps (3) for
installation reference.
5. Remove bearing adjuster lock bolt (3) from bearing
caps.
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REAR AXLE - C213R
WK
6. Loosen differential bearing cap bolts.
7. Loosen differential bearing adjusters through the
axle tubes (1) with Wrench C-4164 (3).
8. Hold differential case while removing bearing caps
and adjusters.
9. Remove differential case and tag differential bear-
ing cups and adjusters to indicate location.
10. Clean housing cavity with flushing oil, light engine
oil or a lint free cloth.
NOTE: Do not use steam, kerosene or gasoline to
clean the housing.
DISASSEMBLY
1. Rotate one pinion gear (2) with thrust washer (3) to
the differential window (1). Remove gear and thrust
washer.
WK
REAR AXLE - C213R
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