suspension 3f ISUZU AXIOM 2002 Service Owner's Guide

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)

3C±24FRONT SUSPENSION
Torque Specifications
E03R200003

FRONT SUSPENSION3C±25
Special Tools
ILLUSTRATIONTOOL NO.
TOOL NAME
J±23907
Remover;Needle
bearing
J±36838
Installer; Needle bearing
J±8092
Grip
J±36837
Installer; Oil seal
J±39376
Installer; Upper arm
bushing
J±29775
Remover and Installer
Upper arm bushing
ILLUSTRATIONTOOL NO.
TOOL NAME
J±36833
Remover and
Installer kit;
Lower arm front bushing
J±36834
Remover and
Installer kit;
Lower arm rear bushing
J±36831
Ball joint remover
J±29107
Tie-rod end remover

REAR SUSPENSION3D±1
AXIOM (Vehicles Produced Before July/31/2001)
SUSPENSION
REAR SUSPENSION
CONTENTS
Service Precaution 3D±1. . . . . . . . . . . . . . . . . . . . . .
General Description 3D±1. . . . . . . . . . . . . . . . . . . . .
Diagnosis 3D±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coil Spring 3D±5. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coil Spring and Associated Parts 3D±5. . . . . . . .
Removal 3D±5. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 3D±6. . . . . . . . . . . . . . . . . .
Installation 3D±6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shock Absorber 3D±7. . . . . . . . . . . . . . . . . . . . . . . . .
Shock Absorber and Associated Parts 3D±7. . . .
Removal 3D±7. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 3D±7. . . . . . . . . . . . . . . . . .
Installation 3D±7. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trailing Link 3D±8. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trailing Link and Associated Parts 3D±8. . . . . . .
Removal 3D±8. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 3D±8. . . . . . . . . . . . . . . . . .
Installation 3D±9. . . . . . . . . . . . . . . . . . . . . . . . . . . . Upper Link 3D±10. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Upper Link and Associated Parts 3D±10. . . . . . . .
Removal 3D±10. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 3D±10. . . . . . . . . . . . . . . . . .
Installation 3D±11. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lateral Rod 3D±12. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lateral Rod and Associated Parts 3D±12. . . . . . .
Removal 3D±12. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 3D±12. . . . . . . . . . . . . . . . . .
Installation 3D±13. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stabilizer Bar 3D±14. . . . . . . . . . . . . . . . . . . . . . . . . . .
Stabilizer Bar and Associated Parts 3D±14. . . . . .
Removal 3D±14. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 3D±14. . . . . . . . . . . . . . . . . .
Installation 3D±15. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Data and Specifications 3D±16. . . . . . . . . . . . .
Special Tools 3D±18. . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Precaution
WARNING: THIS VEHICLE HAS A SUPPLEMENTAL
RESTRAINT SYSTEM (SRS). REFER TO THE SRS
COMPONENT AND WIRING LOCATION VIEW IN
ORDER TO DETERMINE WHETHER YOU ARE
PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING. WHEN YOU
ARE PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING, REFER TO
THE SRS SERVICE INFORMATION. FAILURE TO
FOLLOW WARNINGS COULD RESULT IN POSSIBLE
AIR BAG DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.
CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts and
systems.
General Description
The rear suspension is a 5-link, coil spring type
suspension with a stabilizer bar, consisting of two trailing
links, two upper links, lateral rod, shock absorber, and
stabilizer. In this suspension, the links are specially
arranged to enable the rear axle to move freely, thereby
expanding suspension stroke, reducing friction, and
improving lateral rigidity and roll control. All these result in
improved stability, riding comfort, and rough road
maneuverability.
Each link connects the axle housing with the frame
through a runner bushing. The axle housing is supported
by the trailing links and upper links longitudinally and by
the lateral rod latitudinally.

3D±2REAR SUSPENSION
Diagnosis
ConditionPossible causeCorrection
Vehicle PullsMismatched or uneven tires.Replace tire.
Tires not adequately inflated.Adjust tire pressure.
Broken or sagging springs.Replace spring.
Radial tire lateral force.Replace tire.
Improper wheel alignment.Adjust wheel alignment.
Brake dragging in one wheel.Repair brake.
Loose, bent or broken front or rear
suspension parts.Tighten or replace the appropriate
suspension part(s).
Faulty shock absorbers.Replace shock absorber.
Parts in power steering valve
defective.Replace power steering unit.
Abnormal or Excessive Tire WearSagging or broken spring.Replace spring.
Tire out of balance.Balance or replace tire.
Improper wheel alignment.Check front end alignment.
Faulty shock absorber.Replace shock absorber.
Hard driving.Replace tire.
Overloaded vehicle.Replace tire and reduce load.
Tires not rotated periodically.Replace or rotate tire.
Worn or loose road wheel bearings.Replace wheel bearing.
Wobbly wheel or tires.Replace wheel or tire.
Tires not adequately inflated.Adjust the pressure.
Wheel HopBlister or bump on tire.Replace tire.
Improper shock absorber operation.Replace shock absorber.
Shimmy, Shake or VibrationTire or wheel out of balance.Balance wheels or replace tire/or
wheel.
Loose wheel bearings.Replace wheel bearing.
Worn steering linkage ball joints.Replace ball joints.
Worn upper or lower end ball joints.Replace ball joints.
Excessive wheel runout.Repair or replace wheel and/or tire.
Blister or bump on tire.Replace tire.
Excessive loaded radial runout of
tire/wheel assembly.Replace tire or wheel.
Improper wheel alignment.Check wheel alignment.
Loose or worn steering linkage.Tighten or replace steering linkage.
Loose steering unit.Tighten steering unit.
Tires not adequately inflated.Adjust tire pressure.
Loose, bent or broken front or rear
suspension parts.Tighten or replace the appropriate
suspension parts.
Faulty shock absorber.Replace shock absorber.
Hub bearing preload misadjustment.Adjust preload.
Parts in power steering valve
defective.Replace power steering unit.

REAR SUSPENSION3D±3
Condition CorrectionPossible cause
Hard SteeringBind in steering linkage ball studs,
upper or lower ball joint.Replace ball joint.
Improper wheel alignment.Check wheel alignment.
Tire not adequately inflated.Inflate tires to proper pressure.
Bind in steering column or shaft.Repair or replace.
Improper power steering system
operation.Repair or replace. Refer to Steering
section.
Too Much Play In SteeringWheel bearings worn.Replace wheel bearings.
Loose steering unit or linkage.Retighten or repair.
Worn or loose steering shaft
universal joint.Retighten or replace steering shaft.
Worn steering linkage ball joints.Replace ball joints.
Worn upper or lower end ball joints.Replace ball joints.
Poor Steering Wheel ReturnabilityBind in steering linkage ball joints.Replace ball joints.
Bind in upper or lower ball joints.Replace ball joints.
Bind in steering column and shaft.Repair or replace.
Bind in steering gear.Check and repair steering gear.
Improper wheel alignment.Adjust wheel alignment.
Tires not adequately inflated.Adjust pressure.
Loose steering wheel nut.Retighten.
Worn wheel bearing.Replace.
Abnormal NoiseWorn, sticky or loose upper or lower
ball joint, steering linkage ball joints
or drive axle joints.Replace.
Faulty shock absorbers.Replace.
Worn upper or lower control arm
bushing.Replace.
Loose stabilizer bar.Retighten bolts or replace bushings.
Loose wheel nuts.Tighten nuts. Check for elongated
wheel nut holes. Replace wheel if
required.
Loose suspension bolts or nuts.Retighten suspension bolts or nuts.
Broken or otherwise damaged wheel
bearings.Replace wheel bearing.
Broken suspension springs. Replace spring.
Loose steering unit. Retighten mounting bolt.
Faulty steering unit.Replace steering unit.
Wandering or Poor Steering StabilityMismatched or unevenly worn tires.Replace tire or inflate tires to proper
pressure.
Loose steering linkage ball joints.Replace ball joints.
Faulty shock absorbers.Replace shock absorber.
Loose stabilizer bar.Tighten or replace stabilizer bar or
bushings.
Broken or sagging springs.Replace spring (pairs).
Improper wheel alignment.Adjust wheel alignment.