Opel Frontera UE. Manual - part 62

REAR SUSPENSION

3D–1

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.

SECTION

3D–2

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–3

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.

Abnormal Noise

Worn, sticky or loose upper or lower 
ball joint, steering linkage ball joi nts 
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.

Condition

Possible cause

Correction

3D–4

REAR SUSPENSION

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.

Suspension Bottoms

Vehicle overloaded. 

Reduce load.

Faulty shock absorber.

Replace shock absorber.

Incorrect, broken or sagging springs.

Replace springs.

Body Leans

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.

Condition

Possible cause

Correction