Jeep 1997 Grand Cherokee Service Manual page 83

SPECIAL TOOL C-452 PINION SEAL SPECIAL TOOL 7794A SPECIAL TOOL C-3281
ZG
REMOVAL AND INSTALLATION (Continued)
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, or pinion flange, remove the
pinion nut and washer.
(9) Use Remover C-452 and Wrench C-3281 to
remove the pinion yoke, or flange, (Fig. 16).
(10) Use Remover 7794-A and slide hammer to
remove the pinion shaft seal (Fig. 17).
(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. 16 Pinion Yoke Removal
Fig. 17 Seal Removal
REMOVAL W/PINION REMOVED
(1) Raise and support the vehicle.
(2) Remove wheel and tire assemblies.
(3) Remove brake rotors and calipers. Refer to
Group 5, Brakes, for proper procedures.
YOKE SLIDE HAMMER
DIFFERENTIAL AND DRIVELINE
(4) Mark the propeller shaft and pinion yoke, or
pinion flange, for installation reference.
(5) Remove the propeller shaft from the yoke, or
pinion flange.
(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.
(9) Using Holder 6958 to hold yoke, or flange, and
a short length of 1 in. pipe, remove the pinion nut
and washer.
(10) Using Remover C-452 and Wrench C-3281,
remove the pinion yoke, or flange, from pinion shaft
(Fig. 16).
(11) Remove the pinion gear from housing (Fig.
18). Catch the pinion with your hand to prevent it
from falling and being damaged.
(12) Remove collapsible spacer from pinion shaft.
Fig. 18 Remove Pinion Gear
INSTALLATION
(1) Install a new collapsible preload spacer on pin-
ion shaft (Fig. 19).
(2) If pinion gear was removed, install pinion gear
in housing.
(3) Install pinion front bearing, if necessary.
(4) Apply a light coating of gear lubricant on the
lip of pinion seal. Install seal with Installer C-3972-A
and Handle C-4171 (Fig. 20), if necessary.
(5) Install yoke, or pinion flange, with Installer
W-162-D, Cup 8109, and holder 6958 (Fig. 21).
RAWHIDE HAM- MER
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