Jeep 1997 Grand Cherokee Service Manual page 154

1 in. PIPE
SPECIAL TOOL 6958
3 - 96 DIFFERENTIAL AND DRIVELINE
REMOVAL AND INSTALLATION (Continued)
(5) If the rotating torque is low, use Holder 6958 to
hold the pinion yoke (Fig. 13), and tighten the pinion
shaft nut in 6.8 N·m (5 ft. lbs.) increments until
proper rotating torque is achieved.
CAUTION: If the maximum tightening torque is
reached prior to reaching the required rotating
torque, the collapsible spacer may have been dam-
aged. Replace the collapsible spacer.
Fig. 13 Tightening Pinion Shaft Nut
(6) Align the installation reference marks on pro-
peller shaft and yoke and install the propeller shaft.
(7) Add gear lubricant to the differential housing,
if necessary. Refer to the Lubricant Specifications for
gear lubricant requirements.
(8) Install brake rotors and calipers. Refer to
Group 5, Brakes, for proper procedures.
(9) Install wheel and tire assemblies.
(10) Lower the vehicle.
COLLAPSIBLE SPACER
REMOVAL W/PINION INSTALLED
(1) Raise and support the vehicle.
(2) Remove wheel and tire assemblies.
(3) Remove rear brake rotors and calipers. Refer to
Group 5, Brakes, for proper procedures.
(4) Mark the propeller shaft and pinion yoke for
installation reference.
(5) Remove the propeller shaft from the yoke.
(6) Rotate the pinion gear three or four times.
(7) Measure the amount of torque necessary to
rotate the pinion gear with a (in. lbs.) dial-type
torque wrench. Record the torque reading for instal-
lation reference.
(8) Using a short piece of pipe and Holder 6958 to
hold the pinion yoke, remove the pinion nut and
washer (Fig. 14).
(9) Use Remover C-452 and Wrench C-3281 to
remove the pinion yoke (Fig. 15).
SPECIAL TOOL 6958
PINION YOKE
1 in. PIPE SPECIAL TOOL C-452 SPECIAL TOOL C-3281
(10) Use Remover 7794-A and slide hammer to
remove the pinion shaft seal (Fig. 16).
(11) Remove the front pinion bearing using a pair
of suitable pick tools to pull the bearing straight off
the pinion gear shaft. It may be necessary to lightly
tap the end of the pinion gear with a rawhide or rub-
ber mallet if the bearing becomes bound on the pin-
ion shaft.
(12) Remove the collapsible spacer.
Fig. 14 Pinion Yoke Holder
Fig. 15 Pinion Yoke Removal
REMOVAL W/PINION REMOVED
(1) Raise and support the vehicle.
(2) Remove wheel and tire assemblies.
(3) Remove rear brake rotors and calipers. Refer to
Group 5, Brakes, for proper procedures.
(4) Mark the propeller shaft and pinion yoke for
installation reference.
(5) Remove the propeller shaft from the yoke.
(6) Rotate the pinion gear three or four times.
(7) Measure the amount of torque necessary to
rotate the pinion gear with a (in. lbs.) dial-type
torque wrench. Record the torque reading for instal-
lation reference.
(8) Remove differential assembly from axle hous-
ing.
YOKE
ZG