2002 ISUZU AXIOM front differential

4A1±5 DIFFERENTIAL (FRONT)
Front Drive Axle Assembly
Front Drive Axle Assembly and Associated Parts
412R200003
Legend
(1) Propeller Shaft
(2) Mounting Nut
(3) Front Axle Case Assembly and Front Drive
Shaft Assembly
(4) Washer(5) Mounting Bolt
(6) Tie±rod End; Power Steering Unit
(7) Knuckle and Back Plate
(8) Hub and Disc Assembly
(9) Suspension Crossmember

DIFFERENTIAL (FRONT) 4A1±6
Removal
1. Jack up the vehicle and support it using jack stand.
2. Remove the tire and wheel.
3. Remove the stone guard.
4. Remove the brake caliper fixing bolt and hang the
caliper. Refer to
Disc Brakes in Brake section.
5. Remove the antilock brake system speed sensor.
Refer to
Front Wheel Speed Sensor in Brake section.
6. Remove the hub and disc assembly.
Refer to
Front Hub and Disc in this section.
7. Remove the propeller shaft, refer to
Front Propeller
Shaft
in this section.
8. Loosen the height control arm of the torsion bar, then
remove the torsion bar from lower control arm.
Refer to
Torsion Bar in Suspension section.
9. Remove the suspension crossmember.
10. Remove the lower nut (1) of the stabilizer link.
11. Remove the lower bolt and nut (2) of the shock
absorber.
412RW057
12. Remove the tie-rod end from the knuckle. Refer to
Power Steering Unit in Steering Section.
13. Disconnect the hose of the shift on the fly.
14. Disconnect the actuator connector.
15. Remove the bolts and nuts of the lower control arm
(Frame side), then disconnect the lower control arm
from frame.
16. Disconnect between the right side upper control arm
and the knuckle, then remove the knuckle with lower
control arm.CAUTION: When removing the knuckle, be careful
not to damage the oil seal inside of the knuckle.
410RW008
17. Support the differential case by the jack.
18. Remove the front axle mounting bolts and nuts, lower
the jack slowly. Remove the left side drive shaft end
from the knuckle, then lower the axle assembly from
the vehicle.
CAUTION:
1. Make sure the axle assembly is supported
securely when performing repairs.
2. Do not damage the power steering unit when
performing the repairs.
3. Do not damage the shift±on±the fly hose bracket
when performing the repairs.
Installation
1. Support the differential case with a jack.
2. Jack up the front drive axle assembly, install the left
side drive shaft to the knuckle, then install the mount
bolts and nuts.
CAUTION:
1. Do not damage the power steering unit when
performing the repairs.
2. Do not damage the shift±on±the fly hose bracket
when performing the repairs.
3. When installing the drive shaft to the knuckle, be
careful not to damage the oil seal inside of the
knuckle.

4A1±7 DIFFERENTIAL (FRONT)
3. Tighten the mounting bolts and nuts to the specified
torque.
Torque: 168 N´m (124 lb ft)
412R200004
4. Install the right side knuckle with lower control arm to
the upper control arm.
Refer to
Knuckle in Suspension section.
CAUTION: Carefully insert the drive shaft into the
knuckle, to avoid damaging the oil seal.
5. Align the bolt hole of the lower control arm, then install
the bolts and nuts.
NOTE: Adjust the buffer clearance before tightening the
bolts and nuts of the lower control arm.
6. Install the hose of the shift on the fly.
7. Install the actuator connector of the shift on the fly.
8. Install the tie-rod end of the power steering unit to the
knuckle, tighten the nut to the specified torque.
Torque: 118 N´m (87 lb ft)
9. Install lower bolts and nuts of the shock absorber,
tighten it to the specified torque.
Torque: 93 N´m (69 lb ft)
10. Install lower nuts of the stabilizer link, tighten it to the
specified torque.
11. Install the suspension crossmember.
12. Install the torsion bar.
Refer to
Torsion Bar in Suspension section.
13. Install the front propeller shaft.
Refer to
Front Propeller Shaft in this section.
14. Install the hub and disc assembly and adjust the
bearing preload.
Refer to
Front Hub and Disc in this section.
15. Install the wheel speed sensor of the antilock brake
system.
16. Install the brake caliper. Tighten the bolt of the caliper
bracket to the specified torque.
Torque: 50 N´m (37 lb ft)
17. Install the stone guard.18. Install the tire and wheel.
19. Lower the vehicle, adjust the trim height.
Refer to
Trim Height Adjustment in Steering section.
20. Tighten the bolts and nuts of the lower control arm to
the specified torque.
Refer to
Lower Control Arm in Suspension section.

DIFFERENTIAL (FRONT) 4A1±8
Differential Assembly
Disassembled View
415R200002
Legend
(1) Differential Assembly
(2) Flange Nut
(3) Flange
(4) Oil Seal
(5) Outer Bearing
(6) Outer Bearing Outer Race
(7) Differential Carrier
(8) Bearing Cap
(9) Bolt
(10) Collapsible Spacer
(11) Inner Bearing Outer Race(12) Inner Bearing
(13) Adjust Shim
(14) Pinion Gear
(15) Diff Cage Assembly
(16) Side Bearing Outer Race
(17) Side Bearing
(18) Adjust Shim
(19) Bolt
(20) Axle Case
(21) Final Drive Damper
(22) Damper Bolt
(23) Damper Bracket

4A1±9 DIFFERENTIAL (FRONT)
Disassembly
1. Remove differential carrier fixing bolt.
2. Remove differential assembly.
3. Using holding fixture J±37264 and holding fixture
base J±3289±20, fix the differential assembly to the
bench.
425RS008
4. Remove bearing cap bolt.
5. Apply a setting mark to the side bearing cap and the
differential carrier then remove bearing cap.
425RS009
6. Remove differential cage assembly.
7. Remove side bearing outer race, after removal, keep
the right and left hand side bearing assemblies
separate to maintain inner and outer race
combinations.
8. Remove side bearing, using remover J±42379 and
adapter J±8107±2.

Select insert; 303173 and collet halves; 44801 in
remover kit J±42379.
415RW003
9. Remove adjust shim, note the thickness and position
of the shims removed.
10. Remove the flange nut using holding wrench
J±8614±01.
415RS018

DIFFERENTIAL (FRONT) 4A1±10
11. Remove flange using a universal puller.
12. Remove the drive pinion assembly using a soft metal
rod and a hammer.
425RS012
13. Remove collapsible spacer.
14. Remove the inner bearing using remover J±42379.

Select insert; 303173 and collet halves; 44801 in
remover kit J±42379.
415RW004
15. Remove adjust shim.
16. Remove oil seal.
17. Remove outer bearing.18. Remove the inner bearing outer race (1) and the outer
bearing outer race (2) by using a brass bar and a
hammer.
425RS014
425RS015

4A1±11 DIFFERENTIAL (FRONT)
19. Remove damper and bracket.
425RW042
Reassembly
1. Using installer J±7817 and grip J±8092, install outer
bearing outer race.
415RW013
2. Using installer J±7818 and grip J±8092, install Inner
bearing outer race.
415RW014
3. Install adjust shim and adjust drive pinion mounting
distance:
1. Apply gear oil to the inner and outer drive pinion
bearing.
Clean the pinion setting gauge set.
Then install the gauge set together with the inner
and outer bearings.

DIFFERENTIAL (FRONT) 4A1±12
2. Tighten the nut to the specified torque.
Torque: 2.3 N´m (20 lb in)
425RW030
Legend
(1) Pilot : J±21777±42
(2) Pilot : J±42479±2
(3) Gauge Plate : J±42479±1
(4) Nut and Stud : J±21777±43
3. Clean the side bearing bores. Install the dial
indicator with the discs and arbor. Install and
tighten the bearing caps to the specified torque.
Torque: 97 N´m (72 lb ft)
425RW031
Legend
(1) Dial Indicator: J±8001
(2) Gauge Plate: J±42479±1
(3) Disc (2 pcs.): J±23597±8
(4) Arbor: J±23597±1
4. Set the dial indicator to ª0º. Place it on the
mounting post of the gauging arbor with the
contact button touching the indicator pad. Force
the dial indicator downward until the needle has
made a half turn clockwise. Tighten down the dial
indicator in this position.
425RS020
Legend
(1) Dial Indicator
(2) Ganging Arbor
(3) Plunger
(4) Gauge Plate
5. Position the plunger on the gauge plate. Move the
gauging arbor slowly back and forth and locate
the position at which the dial indicator shows the
greatest defection. At this point, once again set
the dial indicator to ª0º.
Repeat the procedure to verify the ª0º setting.
425RS021