Mitsubishi Evolution X. Manual - part 857

 

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Mitsubishi Evolution X. Manual - part 857

 

 

GENERAL SPECIFICATIONS

TSB Revision

FRONT SUSPENSION

33-3

GENERAL SPECIFICATIONS

M1332000200396

COIL SPRING

Item

GSR

MR

M/T

TC-SST

Wire diameter mm (in)

14 (0.55), 15 (0.59)*

14 (0.55), 15 (0.59)*

15

Average outside diameter mm (in)

121 

− 159 (4.7 − 6.2), 

120 

− 160 (4.7 − 6.2)*

121 

− 159 (4.7 − 6.2), 

120 

− 160 (4.7 − 6.2)*

120 

− 160

Free length mm (in)

286 (11.2), 287 (11.2)* 291 (11.4), 292 (11.4)* 292

NOTE: 

*

: Optional

SERVICE SPECIFICATIONS

M1332000301341

Item

Specification

Toe-in mm (in)

0 

± 2 (0 ± 0.07)

Steering angle

Inner wheel

33 

°  10' ± 1 °  30'

Outer wheel (reference)

28 

°  10'

Camber

− 1° 00' ± 30' (Left/right deviation within 30')

Caster

4

°  25' ± 30' (Left/right deviation within 30')

Kingpin inclination

13 

°  50' ± 1 °  30'

Lower arm ball joint breakaway torque N

⋅ m (in-lb)

3.4 or less (29 or less)

Stabilizer link ball joint turning 
torque N

⋅ m (in-lb)

Within 10 to 30

° C (50 to 86° F) 0.2 − 2.0 (1.7 − 17)

Not within 10 to 30

° C (50 to 

86

° F)

{0.2 

− 5.0 (1.7 − 44)

Strut assembly to knuckle connection nut

110 

± 11 N⋅ m (81 ± 8 ft-lb)

Wheel speed sensor clamp nut

13 

± 2 N⋅ m (111 ± 22 in-lb)

Strut assembly to break hose bracket connection nut

13 

± 2 N⋅ m (111 ± 22 in-lb)

Item

Specification

FRONT SUSPENSION DIAGNOSIS

TSB Revision

FRONT SUSPENSION

33-4

FRONT SUSPENSION DIAGNOSIS

INTRODUCTION TO FRONT SUSPENSION DIAGNOSIS

M1332009000281

If the front suspension is faulty, the vehicle will not 
run straightforward or noise will occur. Incorrect 
wheel alignment, malfunction of strut assembly, sta-
bilizer bar, coil spring, or worn or out-of-balance tires 
can cause these problems.

FRONT SUSPENSION DIAGNOSIS TROUBLESHOOTING STRATEGY

M1332009100277

Use these steps to plan your diagnostic strategy. If 
you follow them carefully, you will be sure that you 
have exhausted most of the possible ways to find a 
front suspension fault.
1. Gather information from the customer.

2. Verify that the condition described by the 

customer exists.

3. Find and repair the malfunction by following the 

Symptom Chart and Symptom Procedures.

4. Verify malfunction is eliminated.

SYMPTOM CHART

M1332009400319

Symptom

Inspection 
procedure

Reference page

Steering wheel is heavy, vibrates or pulls to one side

1

 

P.33-4

Excessive body rolling

2

 

P.33-5

Poor ride

3

 

P.33-5

Unequal ride height

4

 

P.33-5

Noise

5

 

P.33-6

SYMPTOM PROCEDURES

INSPECTION PROCEDURE 1: Steering Wheel Is Heavy, Vibrates or Pulls to One Side

DIAGNOSIS

STEP 1. Check the tires.
Refer to GROUP 31, Diagnosis 

P.31-3

.

Q: Are the tires in normal condition?

YES : 

Replace the tires as necessary, then go to 

Step 2.

NO : 

If out of balance, balance the tires as 
necessary. If excessively worn, replace the 
tires as necessary and go to Step 5.

STEP 2. Check the wheel alignment.
Refer to 

P.33-7

.

Q: Is the wheel alignment correct?

YES : 

Go to Step 3.

NO : 

Adjust it, then go to Step 5.

STEP 3. Check the lower arm ball joint.

Q: Is the ball joint in good condition?

YES : 

Go to Step 4.

NO : 

Replace the lower arm assembly, then go to 
Step 5.

STEP 4. Check the coil spring.

Q: Is the coil spring in good condition?

YES : 

Go to Step 5.

NO : 

Replace it, 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.

FRONT SUSPENSION DIAGNOSIS

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FRONT SUSPENSION

33-5

INSPECTION PROCEDURE 2: Excessive Body Rolling

DIAGNOSIS

STEP 1. Check for broken or deteriorated 
stabilizer bar.

Q: Is the stabilizer bar in good condition?

YES : 

Go to Step 2.

NO : 

Replace it, then go to Step 3.

STEP 2. Check the strut assembly for damage.

Q: Is the strut assembly in good condition?

YES : 

Go to Step 3.

NO : 

Replace it, then go to Step 3.

STEP 3. Retest the system.

Q: Is the malfunction eliminated?

YES : 

The procedure is complete.

NO : 

Return to Step 1.

INSPECTION PROCEDURE 3: Poor Ride

DIAGNOSIS

STEP 1. Check for improper tire inflation 
pressure.
Refer to GROUP 31, On-vehicle Service 

− Tire Infla-

tion Pressure Check 

P.31-8

.

Q: Is the tire inflation correct?

YES : 

Go to Step 2.

NO : 

Adjust it, then go to Step 4.

STEP 2. Check for broken or deteriorated coil 
spring(s).

Q: Are the coil spring(s) broken or deteriorated?

YES : 

Replace the coil spring(s), then go to Step 

4.

NO : 

Go to Step 3.

STEP 3. Check for strut assembly damage.

Q: Is the strut assembly damaged?

YES : 

Replace it, then go to Step 4.

NO : 

Go to Step 4.

STEP 4. Retest the system.

Q: Is the malfunction eliminated?

YES : 

The procedure is complete.

NO : 

Return to Step 1.

INSPECTION PROCEDURE 4: Unequal Ride Height

DIAGNOSIS

STEP 1. Check for broken or deteriorated coil 
spring(s).

Q: Is the coil spring(s) broken or deteriorated?

YES : 

Replace it, then go to Step 2.

NO : 

Go to Step 2.

STEP 2. Retest the system.

Q: Is the malfunction eliminated?

YES : 

The procedure is complete.

NO : 

Return to Step 1.

SPECIAL TOOLS

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FRONT SUSPENSION

33-6

INSPECTION PROCEDURE 5: Noise

DIAGNOSIS

STEP 1. Check for lack of lubrication.

Q: Is lubrication inadequate?

YES : 

Lubricate it, then go to Step 5.

NO : 

Go to Step 2.

STEP 2. Check the tightened parts for looseness 
as well as the bushings for wear.

Q: Are the tightened parts and bushings in good 

condition?
YES : 

Go to Step 3.

NO : 

Replace it, then go to Step 5.

STEP 3. Check for broken coil spring.

Q: Is the coil spring broken?

YES : 

Replace it, then go to Step 5.

NO : 

Go to Step 4.

STEP 4. Check for strut assembly damage.

Q: Is the strut assembly damaged?

YES : 

Replace it, 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

M1332000600907

Tool

Tool number and name

Supersession

Appli8cation

MB991004

MB991004
Wheel alignment gauge 
attachment

MB991004-01 or General 
service tool

Wheel alignment 
measurement

MB991832

a

b

c

d

e

f

MB991832

a. MB991793
b. MB991795
c. MB991794
d. MB991829
e. MB991831
f. MB991830

Spring compressor set

a. Spring compressor
b. Attachment A
c. Upper plate
d. Arm bracket
e. Spacer
f. Fixture

General service tool

Front coil spring 
compression
NOTE: The coil spring can 
not be compressed by 
following conventional 
special tools.

.

•

MB991237
Spring compressor 
body

•

MB991238
Arm set

MB991680

A

B

a

b

MB991680

a. MB991681
b. MB991682

Wrench set

a. Wrench
b. Socket

−

Strut assembly 
disassembly and 
reassembly

 

 

 

 

 

 

 

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