2002 ISUZU AXIOM Service Repair Manual

3C±16FRONT SUSPENSION
Lower Control Arm
Lower Control Arm and Associated Parts
450R200003
Legend
(1) Nut, Front
(2) Bush, Front
(3) Bolt, Front
(4) Nut, Rear
(5) Bush, Rear
(6) Bolt, Rear
(7) Bolt, Lower Ball Joint(8) Bolt, Torsion Bar Arm
(9) Torsion Bar Arm Bracket and Nut
(10) Torsion Bar
(11) Lower Control Arm
(12) Lower Ball Joint and Nut
(13) Shock Absorber
(14) Stabilizer Link
Removal
1. Raise the vehicle and support the frame with suitable
safety stands.
2. Remove wheel and tire assembly. Refer to
Wheel in
this section.
3. Remove the tie-rod end from the knuckle. Refer to
Power Steering Unit in Steering section.
4. Remove the retaining ring from the front axle driving
shaft to release the shaft from hub(Except 2WD
model). Refer to
Front Hub and Disc in Driveline/Axle
section.
5. Support lower control arm with a jack.

FRONT SUSPENSION3C±17
6. Remove front nut.
7. Remove rear nut.
8. Remove torsion bar, refer to
Torsion Bar in this
section.
9. Remove torsion bar arm bracket.
10. Disconnect the stabilizer link at the lower control arm.
11. Remove the shock absorber lower end from the lower
control arm.
12. Remove the lower ball joint from the lower control
arm.
13. Remove front bolt.
14. Remove rear bolt.
15. Remove lower control arm.
16. Remove torsion bar arm bolt.
17. Remove lower ball joint bolt.
18. Remove front bushing by using remover J±36833.
901RW154
901RW155
19. Remove rear bushing by using remover J±36834.
901RW051
901RW052
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:

Lower control arm

Bushing

3C±18FRONT SUSPENSION
Installation
1. Install rear bushing by using installer J±36834.
901RW053
2. Install front bushing by using installer J±36833.
901RW156
3. Install lower ball joint bolt.
4. Install torsion bar arm bolt.
5. Install lower control arm.
6. Install rear bolt.
7. Install front bolt.
8. Install lower ball joint and tighten it to the specified
torque.
Torque: 116 N´m (85 lb ft)
9. Install shock absorber and tighten it to the specified
torque.
Torque: 93 N´m (69 lb ft)
10. Install stabilizer link and tighten it to the specified
torque.
Torque: 50 N´m (37 lb ft)11. Install torsion bar arm bracket and tighten it to the
specified torque.
Torque: 116 N´m (85 lb ft)
12. Install Torsion bar, refer to
Torsion Bar in this section.
13. Install rear nut and tighten lower link nut finger±tight.
NOTE: Torque lower control arm nut after adjusting buffer
clearance.
Buffer clearance: 15 mm (0.59 in)
Torque: 235 N´m (174 lb ft)
450R200002
14. Install front nut then tighten lower link nut finger-tight.
NOTE: Torque lower control arm nut after adjusting buffer
clearance .
Buffer clearance: 15 mm (0.59 in)
Torque: 186 N´m (137 lb ft)
NOTE: A d j u s t t h e t r i m h e ight. Refer to
Front End
Alignment Inspection and Adjustment in Steering section.
450R200002

FRONT SUSPENSION3C±19
Upper Ball Joint
Upper Ball Joint and Associated Parts
450RW004
Legend
(1) Bolt and Nut(2) Upper Ball Joint
(3) Nut and Cotter Pin
Removal
1. Raise the vehicle and support the frame with suitable
safety stands.
2. Remove the speed sensor from the knuckle.

3C±20FRONT SUSPENSION
3. Remove upper ball joint nut and cotter pin, then use
remover J±36831 to remove the upper ball joint from
the knuckle.
CAUTION: Be careful not to damage the ball joint
boot.
901RW162
4. Remove bolt and nut.
5. Remove upper ball joint.
Inspection and Repair
Make necessary parts replacement if wear, damage,
corrosion or any other abnormal conditions are found
through inspection.

Inspect the lower end boot for damage or grease leak.
Move the ball joint as shown in the figure to confirm its
normal movement.

Inspect screw/taper area of ball for damage.

If any defects are found by the above inspections,
replace the ball joint assembly with a new one.
450RS023

After moving the ball joint 4 or 5 times, attach nut then
measure the preload.
Starting torque: 0.5 ±3.2 N´m (0.4±2.4 lb ft)
450RS024If the above limits specified are exceeded, replace the ball
joint assembly.
Installation
1. Install upper ball joint.
2. Install bolt and nut, then tighten them to the specified
torque.
Torque: 57 N´m (42 lb ft)
3. Install nut and cotter pin, then tighten the nut to the
specified torque with just enough additional torque to
align cotter pin holes. Install new cotter pin.
Torque: 98 N´m (72 lb ft)

FRONT SUSPENSION3C±21
Lower Ball Joint
Lower Ball Joint and Associated Parts
450RW011
Legend
(1) Bolt
(2) Lower Ball Joint(3) Nut
(4) Nut and Cotter Pin
Removal
1. Raise the vehicle and support the frame with suitable
safety stands.
2. Remove wheel and tire assembly. Refer to
Wheel in
this section.
3. Remove the tie-rod end from the knuckle. Refer to
Power Steering Unit in Steering section.
4. Remove the retaining ring from the front axle driving
shaft to release the shaft from hub(Except 2WD
model). Refer to
Front Hub and Disc in Driveline/Axle
section.
5. Support lower control arm with a jack.
6. Remove lower ball joint nut and cotter pin, then use
remover J±29107 to remove the lower ball joint from
the knuckle.
CAUTION: Be careful not to damage the ball joint
boot.
901RW163

3C±22FRONT SUSPENSION
7. Remove nut.
8. Remove bolt.
9. Remove lower ball joint.
Inspection and Repair
Make necessary parts replacement if wear, damage,
corrosion or any other abnormal condition are found
through inspection.

Inspect the lower end boot for damage or grease leak.
Move the ball joint as shown in the figure to confirm its
normal movement .

Inspect screw/taper area of ball for damage.

If any defects are found by the above inspections,
replace the ball joint assembly with a new one.
450RS026

After moving the ball joint 4 or 5 times, attach nut the
measure the preload.
Starting torque: 0.5±6.4 N´m (0.4±4.7 lb ft)
450RS024

If the above limits specified are exceeded, replace the
ball joint assembly.
Installation
1. Install lower ball joint.
2. Install bolt.
3. Install nut and tighten it to the specified torque.
Torque: 116 N´m (85 lb ft)
4. Install ball joint nut, then tighten it to the specified
torque with just enough additional torque to align
cotter pin holes. Install new cotter pin.
Torque: 147 N´m (108 lb ft)

FRONT SUSPENSION3C±23
Main Data and Specifications
General Specifications
Front suspensionTypeIndependent wishbone arms,
torsion bar spring with stabilizer bar.
Torsion bar springLength1142 mm (45.0 in)
Diameter29.0 mm (1.14 in)
Front shock absorberTypeHydraulic, double acting, telescopic
Piston diameter30.0 mm (1.18 in)
Stroke115.0 mm (4.53 in)
Compressed
length255.0 mm (10.04 in)
Extended length370.0 mm (14.57 in)
Stabilizer barDiameter25.0 mm (0.98 in)