2002 ISUZU AXIOM Service Repair Manual

4A2±6DIFFERNTIAL (REAR)
9. Loosen the brake tube flare nut, remove the clip and
take out the brake tube.
350RW020
10. Remove the shock absorber.
11. Remove the stabilizer linkage mounting bolts and
nuts (2) from the frame side.
350RW024
12. Remove the lateral rod fixing bolt and nut from the
frame.
13. Remove the upper link mounting bolt and nut (3) from
the axle housing.
460RW015
14. Remove the lower link fixing bolt and nut (4) from the
axle housing.
460RW016
15. Jack down and remove the coil spring and insulator.
16. Axle housing assembly can be separated from the
vehicle upon completion of steps 1 ± 15.
17. Remove the brake caliper fixing bolt, loosen the flare
nut, release the clip and take out the brake caliper
together with the flexible hose.
18. Remove brake disc.
19. Remove antilock brake system speed sensor fixing
bolt and the clip and bracket on the axle housing.
20. Remove the brake pipe clip and fixing bolt on the axle
housing and take out the brake pipe.

DIFFERENTIAL (REAR)4A2±7
Installation
1. Install brake pipe.
2. Connect Antilock brake system (ABS) speed sensor
and harness, refer to
4±Wheel Anti±Lock Brake
System (ABS) in Brake
section.
3. Install brake disc.
4. Install brake caliper. Refer to
Disk Brakes in Brake
section.
5. Install axle housing assembly.
6. Install coil spring and insulator.
7. Install the lower link fixing bolt and nut to the axle
housing. For the procedures in items 7±11, refer to
Suspension section.
8. Install the upper link bolt and nut to the axle housing.9. Install the lateral rod fixing nut and bolt to the frame
side.
10. Install the stabilizer linkage mounting nut and bolt to
the frame side.
11. Install the shock absorber.
12. Install brake tube flare nut, Refer to
Disk Brakes in
Brake
section.
13. Install ABS connector and bracket.
14. Connect breather hose.
15. Install parking brake cable, Refer to
Parking Brakes in
Brake
section.
16. Bleed brakes. Refer to
Hydraulic Brakes in Brake
section.
Axle Shaft, Oil Seal and Bearing
Axle Shaft and Associated Parts
Disc Brake Model
420RW008
Legend
(1) Axle Shaft
(2) Backing Plate
(3) Oil Seal
(4) Bearing
(5) Axle Housing
(6) Lock Washer
(7) Nut
Drum Brake Model
420RX001
Legend
(1) Axle Shaft
(2) Backing Plate
(3) Oil Seal
(4) Bearing
(5) Axle Housing
(6) Lock Washer
(7) Nut

4A2±8DIFFERNTIAL (REAR)
Removal
1. Raise the vehicle.
2. Remove rear wheels and brake calipers or drums.
Do not let calipers hang from the vehicle by the brake
line or hose. Use a wire to hang the caliper to the
frame to prevent damage to the caliper.
3. Remove four nuts and lockwashers.
4. Remove shaft assembly from the axle housing.
5. Remove snap ring and bearing cup.
6. Break retainer ring with hammer and chisel.
420RS026
7. Break bearing cage with hammer and chisel.
420RS027
8. Remove oil seal, retainer, and emergency brake
assembly.
9. Remove inner race from shaft with OTC±1126
bearing splitter and press.
420RS028
Inspection

Shaft for spalling or grooves from seal wear.

Retainer ± bent or damaged.

Replace items if required.
Installation
1. Emergency brake assembly.
2. Install retainer.
Note direction ± do not install backwards.
420RS029

DIFFERENTIAL (REAR)4A2±9
3. Install oil seal. Note direction.
4. Install bearing assembly, using installer and press.
420RS030
NOTE: Install bearing with cup towards inboard side.
420RS031
5. Install retainer ring, using installer and press.
420RS033
6. Install snap ring.
7. Install axle shaft assembly into housing.
8. Install bolts, lockwashers, and nuts.
Tighten the retainer nuts to the specified torque.
Torque : 75 N´m (55 lb ft)

4A2±10DIFFERNTIAL (REAR)
Pinion Oil Seal
Pinion Oil Seal and Associated Parts
420RW013
Legend
(1) Flange Nut and Washer
(2) Flange(3) Oil Seal
(4) Outer Oil Seal Slinger
(5) Outer Pinion Bearing (Cup and Cone)
Removal
1. Remove the rear propeller shaft. Refer to Rear
Propeller Shaft
in this section.
2. Drain the rear axle oil.
3. Check and record preload with an inch pound torque
wrench. This will give combined pinion bearing, seal,
carrier bearing, axle bearing and seal preload.
425RW018

DIFFERENTIAL (REAR)4A2±11
4. Remove flange nut and washer by using pinion flange
holder J±8614±01 after raising up its staked parts
completely.
425RW037
5. Remove flange by using SST J±8614±1 ~ 3.

Have a suitable container in place to catch
lubricant.
425RW038
6. Remove oil seal.
7. Remove pinion oil seal slinger.
8. Remove outer bearing by using remover J±39602.
425RS090
9. Remove collapsible spacer.
Inspection and Repair
Make necessary correction or parts replacement if wear,
damage, corrosion or any other abnormal condition are
found through inspection.
Check the following parts.
1. Seal surface of the flange.
2. Cage bore for burns.
Installation
1. Install collapsible spacer, discard the used collapsible
spacer and install a new one.
2. Install outer bearing.
NOTE: Do not drive in, but just temporarily set in the outer
bearing by hand, which should be indirectly pressed in
finally by tightening the flange nut.

4A2±12DIFFERNTIAL (REAR)
3. By using the seal installer J±37263, install a new oil
seal (1) that has grease on seal lip.
425RS004
4. Install flange.
5. The pinion washer and a new nut while holding the
pinion flange with J±8614±01.

Tighten the nut until the pinion end play is just taken
up. Rotate the pinion while tightening the nut to seat
the bearings. Once there is not end play in the
pinion, the preload torque should be checked.

Remove J±8614±01. Using an inch-pound torque
wrench, check to make sure the pinion preload is
equal to or slightly over the reading recorded during
removal.
425RW018
6. Install propeller shaft to the frange.
7. Install bolt and nut. Tighten the bolt and nut to the
specified torque.
Torque: 63 N´m (46 lb ft)

DIFFERENTIAL (REAR)4A2±13
Differential Assembly
Disassembled View
420RW018
Legend
(1) ABS Speed Sensor
(2) Housing
(3) Outer Pinion Bearing (Cup and Cone)
(4) Outer Oil Slinger
(5) Oil Seal
(6) Companion Flange Assembly
(7) Pinion Nut Washer
(8) Pinion Nut
(9) Collapsible Spacer
(10) Baffle Plate
(11) Inner Pinion Bearing (Cup and Cone)
(12) Inner Oil Slinger
(13) Pinion gear adj. Shim-Selective (Position)
(14) Ring gear and Pinion Gear Assembly
(15) Exciter Ring
(16) Differential Case(17) Lock Pin
(18) Axle Vent
(19) Gasket
(20) Cover and Clip Assembly
(21) Fill Plug (with Magnet)
(22) Mounting Bracket
(23) Side Bearing Cap Bolt
(24) Side Bearing Cap
(25) Ring Gear Bolts
(26) Differential Adjustment Shims (Side Bearing
Preload and Ring Gear/Pinion Backlash)
(27) Side Bearing (Cup and Cone)
(28) Differential Shaft
(29) Differential Side Gears
(30) Side Gear Thrust Washer
(31) Pinion Mate Gears
(32) Thrustwasher-Differential Pinion Mate Gear