Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual - part 62

REAR SUSPENSION

3D–19

AXIOM (Vehicles Produced After Aug./1/2001)

REAR SUSPENSION

CONTENTS

Service Precaution

3D–19

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General Description

3D–19

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Diagnosis

3D–20

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Coil Spring

3D–23

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Coil Spring and Associated Parts

3D–23

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Removal

3D–23

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Inspection and Repair

3D–24

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Installation

3D–24

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Shock Absorber

3D–25

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Shock Absorber and Associated Parts

3D–25

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Removal

3D–25

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Inspection and Repair

3D–25

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Installation

3D–25

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Trailing Link

3D–26

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Trailing Link and Associated Parts

3D–26

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Removal

3D–26

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Inspection and Repair

3D–26

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Installation

3D–27

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Upper Link

3D–28

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Upper Link and Associated Parts

3D–28

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Removal

3D–28

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Inspection and Repair

3D–28

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Installation

3D–29

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Lateral Rod

3D–30

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Lateral Rod and Associated Parts

3D–30

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Removal

3D–30

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Inspection and Repair

3D–30

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Installation

3D–31

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Stabilizer Bar

3D–32

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Stabilizer Bar and Associated Parts

3D–32

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Removal

3D–32

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Inspection and Repair

3D–32

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Installation

3D–33

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Main Data and Specifications

3D–34

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Special Tools

3D–36

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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–20

REAR SUSPENSION

Diagnosis

Condition

Possible cause

Correction

Vehicle Pulls

Mismatched 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 Wear

Sagging 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 Hop

Blister or bump on tire.

Replace tire.

Improper shock absorber operation.

Replace shock absorber.

Shimmy, Shake or Vibration

Tire 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 SUSPENSION

3D–21

Condition

Correction

Possible cause

Hard Steering

Bind 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 Steering

Wheel 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 Returnability

Bind 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.

Misassemble Transfer Gear ASM

Reassemble Transfer Gear to proper
portion

Abnormal Noise

Worn, 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 Stability

Mismatched 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.

3D–22

REAR SUSPENSION

Condition

Correction

Possible cause

Erratic Steering When Braking

Worn wheel bearings.

Replace wheel bearings.

Broken or sagging springs.

Replace spring (pairs).

Leaking caliper.

Repair or replace caliper.

Warped discs.

Replace brake disc.

Badly worn brake pads.

Replace brake pads.

Tires are inflated unequally.

Inflate tires to proper pressure.

Low or Uneven Trim Height

Broken or sagging springs.

Replace springs (In pairs).

Vehicle overloaded.

Reduce load.

Incorrect springs.

Adjust or replace torsion bar.

Trim Height out of spec

Adjust Trim height

Suspension Bottoms

Vehicle overloaded. 

Reduce load.

Faulty shock absorber.

Replace shock absorber.

Incorrect, broken or sagging springs.

Replace springs.

Body Leans

Trim Height out of spec

Adjust Trim height

Loose stabilizer bar.

Tighten stabilizer bar bolts or replace
bushings.

Faulty shock absorber, struts or
mounting.

Replace shock absorber.

Broken or sagging springs.

Replace springs (In pairs).

Vehicle overloaded.

Reduce load.

Cupped Tires

Worn wheel bearings.

Replace wheel bearing.

Excessive tire or wheel run out.

Replace tire or wheel.

Worn ball joints.

Replace ball joints.

Tire out of balance.

Adjust tire balance.