Jeep 1997 Grand Cherokee Service Manual page 115

ZG
REMOVAL AND INSTALLATION (Continued)
(2) Position a suitable lifting device under the
axle.
(3) Secure axle to device.
(4) Remove the wheels and tires.
(5) Remove the brake rotors and calipers from the
axle. Refer to Group 5, Brakes, for proper procedures.
(6) Disconnect parking brake cables from brackets
and lever.
(7) Remove wheel speed sensors, if necessary.
Refer to Group 5, Brakes, for proper procedures.
(8) Disconnect the brake hose at the axle junction
block. Do not disconnect the brake hydraulic lines at
the calipers. Refer to Group 5, Brakes, for proper
procedures.
(9) Disconnect the vent hose from the axle shaft
tube.
(10) Mark the propeller shaft and yokes for instal-
lation alignment reference.
(11) Remove propeller shaft.
(12) Disconnect stabilizer bar links.
(13) Disconnect shock absorbers from axle.
(14) Disconnect track bar.
(15) Disconnect upper and lower suspension arms
from the axle brackets.
(16) Separate the axle from the vehicle.
INSTALLATION
NOTE: The weight of the vehicle must be sup-
ported by the springs before suspension arms and
track bar fasteners can be tightened. If the springs
are not at their normal ride position, vehicle ride
height and handling could be affected.
(1) Raise the axle with lifting device and align coil
springs.
(2) Position the upper and lower suspension arms
on the axle brackets. Install nuts and bolts, do not
tighten bolts at this time.
(3) Install track bar and attachment bolts, do not
tighten bolts at this time.
(4) Install shock absorbers and tighten nuts to 60
N·m (44 ft. lbs.) torque.
(5) Install stabilizer bar links and tighten nuts to
36 N·m (27 ft. lbs.) torque.
(6) Install the wheel speed sensors, if necessary.
Refer to Group 5, Brakes, for proper procedures.
(7) Connect parking brake cable to brackets and
lever.
(8) Install the brake rotors and calipers. Refer to
Group 5, Brakes, for proper procedures.
(9) Connect the brake hose to the axle junction
block. Refer to Group 5, Brakes, for proper proce-
dures.
(10) Install axle vent hose.
SPECIAL TOOL 6958
PINION YOKE
1 in. PIPE
DIFFERENTIAL AND DRIVELINE
(11) Align propeller shaft and pinion yoke refer-
ence marks. Install U-joint straps and bolts. Tighten
to 19 N·m (14 ft. lbs.) torque.
(12) Install the wheels and tires.
(13) Add gear lubricant, if necessary. Refer to
Lubricant Specifications in this section for lubricant
requirements.
(14) Remove lifting device from axle and lower the
vehicle.
(15) Tighten lower suspension arm bolts to 177
N·m (130 ft. lbs.) torque.
(16) Tighten upper suspension arm bolts to 75 N·m
(55 ft. lbs.) torque.
(17) Tighten track bar bolts to 100 N·m (74 ft. lbs.)
torque.
PINION SHAFT SEAL
REMOVAL
(1) Raise and support the vehicle.
(2) Remove wheel and tire assemblies.
(3) Remove the brake rotors and calipers. Refer to
Group 5, Brakes, for proper procedures.
(4) Mark the propeller shaft and pinion yoke for
installation alignment 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. 7).
(9) Use Remover C–452 and Wrench C–3281 to
remove the pinion yoke (Fig. 8).
Fig. 7 Pinion Yoke Holder
(10) Use Remover 7794-A and slide hammer to
remove the pinion gear seal (Fig. 9).
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