Mitsubishi Evolution X. Manual — part 900

34-1

GROUP 34

REAR SUSPENSION

CONTENTS

GENERAL INFORMATION . . . . . . . .

34-2

FASTENER TIGHTENING

SPECIFICATIONS . . . . . . . . . . . . . . .

34-4

GENERAL SPECIFICATIONS . . . . . .

34-4

SERVICE SPECIFICATIONS. . . . . . .

34-5

LUBRICANTS . . . . . . . . . . . . . . . . . .

34-5

REAR SUSPENSION DIAGNOSIS . .

34-6

INTRODUCTION TO REAR SUSPENSION
DIAGNOSIS . . . . . . . . . . . . . . . . . . . . . . . .

34-6

REAR SUSPENSION DIAGNOSTIC
TROUBLESHOOTING STRATEGY . . . . . .

34-6

SYMPTOM CHART. . . . . . . . . . . . . . . . . . .

34-6

SYMPTOM PROCEDURES . . . . . . . . . . . .

34-6

SPECIAL TOOLS. . . . . . . . . . . . . . . .

34-8

ON-VEHICLE SERVICE. . . . . . . . . . .

34-9

REAR WHEEL ALIGNMENT CHECK AND
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . .

34-9

BALL JOINT DUST COVER INSPECTION

34-10

CONTROL LINK AND LOWER ARM

34-12

REMOVAL AND INSTALLATION . . . . . . . .

34-12

CONTROL LINK BALL JOINT ROTATION

STARTING TORQUE CHECK . . . . . . . . . .

34-14

CONTROL LINK SLIDE BUSHING

ROTATION STARTING TORQUE CHECK

34-15

CONTROL LINK BALL JOINT DUST

COVER INSPECTION . . . . . . . . . . . . . . . .

34-15

LOWER ARM PILLOW BALL BUSHING

ROTATION STARTING TORQUE CHECK

34-15

CONTROL LINK BALL JOINT DUST COVER
REPLACEMENT . . . . . . . . . . . . . . . . . . . . .

34-16

TRAILING ARM . . . . . . . . . . . . . . . . .

34-17

REMOVAL AND INSTALLATION . . . . . . . .

34-17

TRAILING ARM BALL JOINT ROTATION

STARTING TORQUE CHECK . . . . . . . . . .

34-18

TRAILING ARM BALL JOINT DUST COVER
INSPECTION. . . . . . . . . . . . . . . . . . . . . . . .

34-19

TRAILING ARM PILLOW BALL BUSHING

ROTATION TORQUE CHECK . . . . . . . . . .

34-19

TRAILING ARM BALL JOINT DUST COVER
REPLACEMENT . . . . . . . . . . . . . . . . . . . . .

34-20

UPPER ARM ASSEMBLY . . . . . . . . .

34-21

REMOVAL AND INSTALLATION . . . . . . . .

34-21

UPPER ARM BALL JOINT ROTATION

STARTING TORQUE CHECK . . . . . . . . . .

34-22

UPPER ARM BALL JOINT DUST COVER
INSPECTION. . . . . . . . . . . . . . . . . . . . . . . .

34-22

UPPER ARM PILLOW BALL BUSHING

ROTATION TORQUE CHECK . . . . . . . . . .

34-22

UPPER ARM BALL JOINT DUST COVER
REPLACEMENT . . . . . . . . . . . . . . . . . . . . .

34-22

SHOCK ABSORBER ASSEMBLY . . .

34-24

REMOVAL AND INSTALLATION . . . . . . . .

34-24

DISASSEMBLY AND ASSEMBLY . . . . . . .

34-25

STABILIZER BAR. . . . . . . . . . . . . . . .

34-28

REMOVAL AND INSTALLATION . . . . . . . .

34-28

STABILIZER LINK CHECK . . . . . . . . . . . . .

34-29

REAR SUSPENSION

CROSSMEMBER . . . . . . . . . . . . . . . .

34-30

REMOVAL AND INSTALLATION . . . . . . . .

34-30

GENERAL INFORMATION

TSB Revision

REAR SUSPENSION

34-2

GENERAL INFORMATION

M1341000101312

The low mount multi link suspension has been
adopted.
There are the following features.

.

IMPROVEMENT IN SUSPENSION
POSITIONING RIGIDITY

• The arm layout has been optimized. (Each arm

support span has been widened.)

• The rigidity of the arm installation part has been

improved. (Better rigidity of crossmember, addi-
tion of trailing arm bracket)

.

IMPROVEMENT IN CORNERING
PERFORMANCE

• The 18-inch low-aspect ratio tire has been

equipped, the wheel tread has been widened,
and the suspension rigidity has been improved,
for better cornering performance and cornering
limit.

• By adopting the non-linear coil spring, the suffi-

cient wheel stroke has been secured, and the
cornering stability not affected by the road condi-
tion has been obtained.

• Cornering performance has been optimized by

selecting the stabilizer diameter.

.

IMPROVEMENT IN STROKE FEELING

• The numbers of pillow ball bush and ball joint on

the arm installation part have been increased for
the better road-holding quality of the suspension.

.

IMPROVEMENT IN DAMPING FEELING

• The shock absorber, which is arranged on the

same axle for the coil spring, has been mounted
with a knuckle for better absorber efficiency.

• The shock absorber installation angle has been

optimized.

.

IMPROVEMENT IN QUALITY

• The Bilstein shock absorber and the Eibach coil

spring

*

have been established.<GSR: optional

equipment, MR: standard equipment>
NOTE:

*

: The Eibach coil spring has widely been

adopted in the motor sport field; sports vehicles in
Europe, F1, WRC, etc.

.

IMPROVEMENT IN ALIGNMENT
ACCURACY

• Arms have been installed to the lattice cross-

member, and the rear suspension has been bro-
ken down into sub assembly for the better
alignment accuracy.

.

WEIGHT SAVING

• The aluminum forged upper arm, trailing arm,

and control link have been adopted for weight
reduction and high rigidity.

• The light weight lower arm made with a steel pipe

has been employed.

.

HEXAVALENT CHROMIUM-FREE
COMPONENT

• Hexavalent chromium has been eliminated from

bolts and nuts.

.

LEAD-FREE COMPONENT

• The lead-free grease has been adopted for the

ball joint.

CONSTRUCTION DIAGRAM

AC710561AB

AC704736

Trailing arm assembly

Trailing arm bracket

Rear suspension
crossmember

Upper arm

Shock absorber assembly

Nonlinear coil spring

Stabilizer bar

Lower arm

Control link

Lower arm

Enlargement
of vertical span

Lower arm

Control link

Enlargement of
anteroposterior span

AC704737

Upper arm

GENERAL INFORMATION

TSB Revision

REAR SUSPENSION

34-3

FASTENER TIGHTENING SPECIFICATIONS

TSB Revision

REAR SUSPENSION

34-4

FASTENER TIGHTENING SPECIFICATIONS

M1341012700448

Item

Specification

Control link
Control link to knuckle nut

81

± 6 N⋅ m (60 ± 4 ft-lb)

Control link to crossmember nut

71

± 10 N⋅ m (52 ± 7 ft-lb)

Lower arm
Lower arm to crossmember nut

71

± 10 N⋅ m (52 ± 7 ft-lb)

Lower arm to knuckle nut

71

± 10 N⋅ m (52 ± 7 ft-lb)

Rear suspension crossmember
Crossmember bracket mounting bolt

71

± 10 N⋅ m (52 ± 7 ft-lb)

Crossmember stay mounting bolt

11

± 3 N⋅ m (97 ± 27 in-lb)

Shock absorber assembly
Shock absorber assembly to body nut

45

± 7 N⋅ m (33 ± 5 ft-lb)

Shock absorber assembly to knuckle nut

71

± 10 N⋅ m (52 ± 7 ft-lb)

Self-locking nut

25

± 5 N⋅ m (19 ± 3 ft-lb)

Stabilizer bar
Stabilizer bar link nut

39

± 6 N⋅ m (29 ± 4 ft-lb)

Stabilizer bracket bolt

39

± 6 N⋅ m (29 ± 4 ft-lb)

Stabilizer clamp bolt

31

± 4 N⋅ m (23 ± 2 ft-lb)

Trailing arm
Trailing arm to knuckle nut

81

± 6 N⋅ m (60 ± 4 ft-lb)

Trailing arm bracket to body bolt

110

± 11 N⋅ m (81 ± 8 ft-lb)

Trailing arm to body bolt

110

± 11 N⋅ m (81 ± 8 ft-lb)

Parking brake cable to trailing arm bolt

11

± 2 N⋅ m (98 ± 17 in-lb)

Upper arm
Upper arm to crossmember bolt

110

± 11 N⋅ m (81 ± 8 ft-lb)

Upper arm assembly to knuckle

71

± 10 N⋅ m (52 ± 2 ft-lb)

Rear wheel speed sensor cable to upper arm bolt

11

± 2 N⋅ m (98 ± 17 in-lb)

Rear wheel speed sensor mounting bolt

8.5

± 1.5 N⋅ m (76 ± 13 in-lb)

GENERAL SPECIFICATIONS

M1341000200457

COIL SPRING

Item

GSR

MR

Wire diameter mm (in)

11 (0.4)

11 (0.4)

Mean diameter of coil mm (in)

79

− 87 (3.1 −3.4)

79

− 87 (3.1 −3.4)

Free length mm (in)

352 (13.9), 357 (14.0)

*

357 (14.0)

NOTE:

*

: Optional equipment