Mitsubishi Galant (2004+). Manual — part 1388

REAR SUSPENSION DIAGNOSIS

TSB Revision

REAR SUSPENSION

34-3

SYMPTOM CHART

M1341013500276

SYMPTOM PROCEDURES

INSPECTION PROCEDURE 1: Squeaks or other Abnormal Noise

DIAGNOSIS

STEP 1. Check for loose rear suspension
installation bolts and nuts.

Q: Are the rear suspension installation bolts and nuts

loose?

YES :

Retighten them, and then go to Step 5.

NO :

Go to Step 2.

STEP 2. Check the condition of the shock
absorbers (worn bushings).

Q: Are the shock absorbers (bushings) in good

condition?

YES :

Go to Step 3.

NO :

Replace the faulty part, and then go to Step
5.

STEP 3. Check the upper arms and/or lower arms
and/or toe control arms for deformity or damage.

Q: Are the upper arms and/or lower arms and/or toe

control arms in good condition?

YES :

Go to Step 4.

NO :

Replace the faulty part, and then go to Step
5.

STEP 4. Check the trailing arms for deformity or
damage.

Q: Are the trailing arms in good condition?

YES :

Go to Step 5.

NO :

Replace the faulty part, and then go to Step
5.

STEP 5. Retest the system.

Q: Is the malfunction eliminated?

YES :

The procedure is complete.

NO :

Return to Step 1.

INSPECTION PROCEDURE 2: Poor Ride

DIAGNOSIS

STEP 1. Check for excessive tire inflation
pressure.

Refer to GROUP 31, On-vehicle Service

− Tire Infla-

tion Pressure Check

P.31-7

.

Q: Is the tire inflation pressure correct?

YES :

Go to Step 2.

NO :

Adjust the pressure, and then go to Step 4.

STEP 2. Check the condition of the shock
absorbers (weak or broken springs).

Q: Are the shock absorbers in good condition?

YES :

Go to Step 3.

NO :

Replace the faulty part, and then go to Step
4.

STEP 3. Check the stabilizer bar and/or stabilizer
bar links for deformity or damage.

Q: Are the stabilizer bar and/or stabilizer bar links

deformed or damaged?

YES :

Replace the faulty part, and then go to Step

4.

NO :

Go to Step 4.

SYMPTOM

INSPECTION PROCEDURE

REFERENCE PAGE

Squeaks or other abnormal noise

1

P.34-3

Poor ride

2

P.34-3

Body tilting

3

P.34-4

REAR SUSPENSION DIAGNOSIS

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REAR SUSPENSION

34-4

STEP 4. Retest the system.

Q: Is the malfunction eliminated?

YES :

The procedure is complete.

NO :

Return to Step 1.

INSPECTION PROCEDURE 3: Body Tilting

DIAGNOSIS

STEP 1. Check for weak or deteriorated
bushings.

Q: Are the bushings in good condition?

YES :

Go to Step 2.

NO :

Replace the faulty part, and then go to Step
5.

STEP 2. Check for weak or broken coil springs.

Q: Are the coil springs in good condition?

YES :

Go to Step 3.

NO :

Replace the faulty part, and then go to Step
5.

STEP 3. Check the upper arms and/or lower arms
and/or toe control arms for deformity or damage.

Q: Are the upper arms and/or lower arms and/or toe

control arms deformed or damaged?

YES :

Replace the faulty part, and then go to Step

5.

NO :

Go to Step 4.

STEP 4. Check the trailing arms for deformity or
damage.

Q: Are the trailing arms deformed or damaged?

YES :

Replace the faulty part, and then go to Step

5.

NO :

Go to Step 5.

STEP 5. Retest the system.

Q: Is the malfunction eliminated?

YES :

The procedure is complete.

NO :

Return to Step 1.

SPECIAL TOOLS

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REAR SUSPENSION

34-5

SPECIAL TOOLS

M1341000600433

TOOL

TOOL NUMBER AND
NAME

SUPERSESSION

APPLICATION

MB991897
Ball joint remover

MB991113-01,
MB990635-01 or General
service tool

Knuckle and toe control
arm ball joint
disconnection
NOTE: Steering linkage
puller (MB990635 or
MB991113) is also
available to disconnect
knuckle and tie rod end
ball joint.

MB990326
Preload socket

General service tool

• Toe control arm ball

joint turning torque
check

• Stabilizer bar link ball

joint breakaway
torque check

MB990800
Ball joint dust cover
installer

MB990800-01or General
service tool

Toe control arm ball joint
dust cover installation

• A: MB991237

Spring compressor
body

• B: MB991239

Arm set

MIT221369 or general
service tool

Coil spring removal and
installation
NOTE: Spring
compressor set
(MB991832) is also
available to compress
coil spring (refer to
GROUP 33, Special
Tools

P.33-5

).

MB991680
Wrench set

• A: MB991681

Wrench

• B: MB991682

Socket

−

Shock absorber
disassembly and
assembly

AC106827

MB990326

MB990800

MB991237

A

B

MB991680

A

B

ON-VEHICLE SERVICE

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REAR SUSPENSION

34-6

ON-VEHICLE SERVICE

REAR WHEEL ALIGNMENT CHECK AND
ADJUSTMENT

M1341011000394

Measure wheel alignment with an alignment equipment on
level ground.
The rear suspension and tires should be serviced to the normal
condition prior to wheel alignment measurement.

.

CAMBER

Standard value:

− 0° 50’ ± 30’ (Left/right deviation within 30’)

NOTE: For vehicles with aluminum wheels, attach the cam-
ber/caster/kingpin gauge by using a compensator.

.

TOE-IN

Standard value: 3

± 3 mm (0.12 ± 0.12 inch)

.

If camber and/or toe-in is not within the standard value, adjust
by the following procedures.

CAUTION

• When adjusting the camber, tighten the lower arm

assembly and the trailing arm assembly, not the toe
control arm.

• After adjusting the camber, be sure to adjust the toe.

1. Carry out camber adjustment by turning the camber

adjusting bolt.
NOTE:

.

•

LH: Clockwise viewed from the rear

→

(

−

) camber

•

RH: Clockwise viewed from the rear

→

(+) camber

•

If either the camber or toe is adjusted, both should fluctu-
ate. For the relationship between the two, refer to CAM-
BER AND TOE REFERENCE TABLE (Refer to

P.34-7

).

AC305848 AB

COMPENSATOR

AC305842

AB

TOE CONTROL ARM

CAMBER
ADJUSTING
BOLT