Jeep 1997 Grand Cherokee Service Manual page 118

PINION SEAL SPECIAL TOOL 7794A
3 - 60 DIFFERENTIAL AND DRIVELINE
REMOVAL AND INSTALLATION (Continued)
Fig. 16 Seal Removal
(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.
(9) Using Holder 6958 to hold yoke and a short
length of 1 in. pipe, remove the pinion yoke nut and
washer (Fig. 14).
(10) Using Remover C–452 and Wrench C–3281,
remove the pinion yoke from pinion shaft (Fig. 15).
(11) Remove the pinion gear from housing (Fig.
17). Catch the pinion with your hand to prevent it
from falling and being damaged.
(12) Remove collapsible spacer from pinion shaft.
INSTALLATION
(1) Install a new collapsible preload spacer on pin-
ion shaft (Fig. 18).
(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. 19).
(5) Install yoke with Screw 8112, Cup 8109, and
Holder 6958 (Fig. 20).
(6) If the original pinion bearings are being used,
install differential assembly and axle shafts, if neces-
sary.
NOTE: If new pinion bearings were installed, do not
install the differential assembly and axle shafts until
after the pinion bearing preload and rotating torque
are set.
SLIDE HAMMER OIL SLINGER
(7) Install the yoke washer and a new nut on the
pinion gear. Tighten the pinion nut until there is zero
bearing end-play.
(8) Tighten the nut to 271 N·m (200 ft. lbs.).
REAR BEAR- ING
Fig. 17 Remove Pinion Gear
Fig. 18 Collapsible Preload Spacer
RAWHIDE HAM- IBLE SPACER COLLAPS- SHOULDER PINION GEAR MER
ZG