Jeep Cherokee (XJ): Differential side bearings. Ring gear. Pinion gear
REMOVAL (1) Remove differential from axle housing.
(2) Remove the bearings from the differential case
with Puller/Press C-293-PA, C-293-39 Blocks, and
Plug SP-3289 (Fig. 30).
1 - SPECIAL TOOL C-293-39 INSTALLATION (1) Using tool C-3716-A with handle C-4171,
install differential side bearings (Fig. 31).
(2) Install differential in axle housing. NOTE: The ring gear and pinion are serviced as a
matched set. Do not replace the ring gear without
replacing the pinion. REMOVAL (1) Remove differential from axle housing.
(2) Place differential case in a suitable vise with
soft metal jaw protectors. (Fig. 32)
(3) Remove bolts holding ring gear to differential
case.
(4) Using a soft hammer, drive ring gear from differential
case (Fig. 32).
1 - HANDLE C-4171
Fig. 32 Ring Gear Removal 1 - CASE INSTALLATION CAUTION: Do not reuse the bolts that held the ring
gear to the differential case. The bolts can fracture
causing extensive damage.
(1) Invert the differential case and start two ring
gear bolts. This will provide case-to-ring gear bolt
hole alignment.
(2) Invert the differential case in the vise.
(3) Install new ring gear bolts and alternately
tighten to 95-122 N·m (70-90 ft. lbs.) torque (Fig.
33).
(4) Install differential in axle housing and verify
gear mesh and contact pattern.
1 - TORQUE WRENCH The ring and pinion gears are serviced in a
matched set. Do not replace the pinion gear without
replacing the ring gear. REMOVAL (1) Remove differential from the axle housing.
(2) Mark pinion yoke and propeller shaft for
installation alignment.
(3) Disconnect propeller shaft from pinion yoke.
Using suitable wire, tie propeller shaft to underbody.
(4) Using Holder 6958 to hold yoke, remove the
pinion yoke nut and washer.
(5) Using Remover C-452 and Wrench C-3281,
remove the pinion yoke from pinion shaft (Fig. 34).
(6) Remove the pinion gear from housing (Fig. 35).
Catch the pinion with your hand to prevent it from
falling and being damaged.
1 - SPECIAL TOOL C-3281
1 - RAWHIDE HAMMER (7) Use a suitable pry tool or a slide hammer
mounted screw to remove the pinion shaft seal.
(8) Remove oil slinger, if equipped, and front pinion
bearing.
(9) Remove the front pinion bearing cup with
Remover C-4345 and Handle C-4171 (Fig. 36).
(10) Remove the rear bearing cup from housing
(Fig. 37). Use Remover D-149 and Handle C-4171.
(11) Remove the collapsible preload spacer (Fig.
38).
1 - REMOVER
1 - DRIVER (12) Remove the rear bearing from the pinion with
Puller/Press C-293-PA and Adapters C-293-40 (Fig.
39).
Place 4 adapter blocks so they do not damage
the bearing cage.
1 - COLLAPSIBLE SPACER
1 - SPECIAL TOOL C-293-PA (13) Remove the depth shims from the pinion gear
shaft. Record the thickness of the depth shims. INSTALLATION (1) Apply Mopart Door Ease, or equivalent, stick
lubricant to outside surface of bearing cup.
(2) Install the pinion rear bearing cup with
Installer D-146 and Driver Handle C-4171 (Fig. 40).
Ensure cup is correctly seated.
1 - INSTALLER (3) Apply Mopart Door Ease, or equivalent, stick
lubricant to outside surface of bearing cup.
(4) Install the pinion front bearing cup with
Installer D-130 and Handle C-4171 (Fig. 41).
(5) Install pinion front bearing, and oil slinger, if
equipped.
(6) 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. 42).
NOTE: Pinion depth shims are placed between the
rear pinion bearing cone and pinion gear to achieve
proper ring and pinion gear mesh. If the factory
installed ring and pinion gears are reused, the pinion
depth shim should not require replacement. If
required, refer to Pinion Gear Depth to select the
proper thickness shim before installing rear pinion
bearing.
(7) Place the proper thickness depth shim on the
pinion gear.
1 - INSTALLER
1 - SPECIAL TOOL C-4171 (8) Install the rear bearing and slinger, if
equipped, on the pinion gear with Installer W-262
(Fig. 43).
(9) Install a new collapsible preload spacer on pinion
shaft and install pinion gear in housing (Fig. 44).
(10) Install pinion gear in housing.
(11) Install yoke with Installer Screw 8112, Cup
8109, and holder 6958 (Fig. 45).
(12) Install the yoke washer and a new nut on the
pinion gear and tighten the pinion nut until there is
zero bearing end-play.
(13) Tighten the nut to 271 N·m (200 ft. lbs.).
CAUTION: Never loosen pinion gear nut to
decrease pinion gear bearing rotating torque and
never exceed specified preload torque. If preload
torque or rotating torque is exceeded a new collapsible
spacer must be installed. The torque
sequence will then have to be repeated.
1 - PRESS
1 - COLLAPSIBLE SPACER
1 - PINION YOKE (14) Using yoke holder 6958 and a torque wrench
set at 474 N·m (350 ft. lbs.), crush collapsible spacer
until bearing end play is taken up (Fig. 46).
NOTE: If the spacer requires more than 474 N·m
(350 ft. lbs.) torque to crush, the collapsible spacer
is defective and must be replaced.
(15) Slowly tighten the nut in 6.8 N·m (5 ft. lbs.)
increments until the rotating torque is achieved.
Measure the rotating torque frequently to avoid over
crushing the collapsible spacer (Fig. 47).
1 - SPECIAL TOOL 6958 (16) Check bearing rotating torque with a (in. lbs.)
torque wrench (Fig. 47). The torque necessary to
rotate the pinion gear should be:
1 - PINION YOKE (17) Install differential in housing.Differential side bearings
Fig. 30 Differential Bearing Removal
2 - BEARING
3 - DIFFERENTIAL
4 - SPECIAL TOOL SP-3289
5 - SPECIAL TOOL C-293-PARing gear
Fig. 31 Install Differential Side Bearings
2 - DIFFERENTIAL
3 - BEARING
4 - TOOL C-3716-A
2 - RING GEAR
3 - RAWHIDE HAMMER
Fig. 33 Ring Gear Bolt Installation
2 - RING GEAR BOLT
3 - RING GEAR
4 - CASEPinion gear
Fig. 34 Pinion Yoke Removal
2 - YOKE
3 - SPECIAL TOOL C-452
Fig. 35 Remove Pinion Gear
Fig. 36 Front Bearing Cup Removal
2 - HANDLE
Fig. 37 Rear Bearing Cup Removal
2 - HANDLE
Fig. 38 Collapsible Spacer
2 - SHOULDER
3 - PINION GEAR
4 - OIL SLINGER
5 - REAR BEARING
Fig. 39 Rear Bearing Removal
2 - VISE
3 - ADAPTERS
4 - DRIVE PINION GEAR SHAFT
Fig. 40 Pinion Rear Bearing Cup Installation
2 - HANDLE
Fig. 41 Pinion Front Bearing Cup Installation
2 - HANDLE
Fig. 42 Pinion Seal Installation
2 - SPECIAL TOOL C-3972-A
Fig. 43 Shaft Rear Bearing Installation
2 - INSTALLATION TOOL
3 - DRIVE PINION GEAR
4 - DRIVE PINION GEAR SHAFT REAR BEARING
Fig. 44 Collapsible Preload Spacer
2 - SHOULDER
3 - PINION GEAR
4 - OIL SLINGER
5 - REAR BEARING
Fig. 45 Pinion Yoke Installation
2 - AXLE HOUSING
Fig. 46 Tightening Pinion Nut-Typical
2 - 1 in. PIPE
3 - 3/4 DRIVE TORQUE WRENCH
Fig. 47 Check Pinion Gear Rotating Torque
2 - INCH POUND TORQUE WRENCH
Axle shaft. Axle shaft seal and bearing. Differential
Other materials:
181 FBI pinion gear depth
GENERAL INFORMATION
Ring and pinion gears are supplied as matched
sets only. The identifying numbers for the ring and
pinion gear are etched into the face of each gear (Fig.
71). A plus (+) number, minus (-) number or zero (0)
is etched into the face of the pinion gear. This number
is the am ...