Mitsubishi Lancer Evolution X. Manual - part 220

STRUT ASSEMBLY

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<<B>> STRUT DISPOSAL

CAUTION

Wear the protective glasses. Although the gas is harmless, 
drilling chips may be blown out by the gas.
Before disposal of the strut, place the strut on the level surface 
with the piston rod extended, and make a hole of approximately 
3 mm in diameter at the point shown in the figure to discharge 
the gas.

ASSEMBLY SERVICE POINTS

.

>>A<< COIL SPRING INSTALLATION

Install the coil spring to align the bottom with the shape of the 
strut spring seat.

.

>>B<< UPPER SPRING SEAT INSTALLATION

Align the D-shaped hole with the D (cut-off) of the strut, and 
install the marked part shown in the figure facing the inside of 
the vehicle.

.

>>C<< STRUT NUT (JAM NUT) INSTALLATION

1. Check that both of the coil spring ends align with the spring 

seat groove correctly.

AC207801

AG

 AC707794AB

Coil spring

Spring seat of strut

AC705716 AB

Upper spring seat

Marking

Inside of vehicle

STRUT ASSEMBLY

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2. Align the strut spring seat hole with the upper spring seat 

hole.

CAUTION

Be careful that the hand is not pinched by the coil spring 
when aligning the piston rod with the hole of upper insula-
tor while compressing the coil spring.

3. While passing the strut piston rod through the hole of upper 

insulator by hand slowly compress the coil spring by special 
tool: MB991793, MB991795, MB991794 and MB991830.

CAUTION

The lock nut for the piston rod inside the strut may be 
loose. Do not use the impact wrench to tighten the strut 
nut (jam nut).
4. Use special tools MB991681 and MB991682 to tighten the 

strut nut (jam nut) to the specified torque:

GREASE: Shell Retinax Grease CL0
Tightening torque : 61 ± 9 N⋅ m (45 ± 6 ft-lb)

INSPECTION

M1332001400315

• Check the bearing for wear or rust.
• Check the rubber parts for damage or deterioration.
• Check the spring for deformation, deterioration or damage.
• Check the shock absorber for deformation.

AC710603AB

Spring seat
of strut

Upper
spring seat

AC105116

MB991794

AC

MB991830

MB991795

MB991793

AC707645

MB991681

MB991682

AG

Strut nut
(Jam nut)

LOWER ARM

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LOWER ARM

REMOVAL AND INSTALLATION

M1332001601516

CAUTION

•

*1

: Indicates parts which should be temporarily tightened, and then fully tightened with the vehicle 

standing on the ground and the curb weight condition. 

•

*2

: Indicates the bolts and nuts with friction coefficient stabilizer. In removal, ensure there is no 

damage, clean dust and soiling from bearing and thread surfaces, and tighten them to the speci-
fied torque.

• Do not damage the lower arm ball joint dust cover during maintenance. If it is damaged, replace 

the lower arm ball joint dust cover.(Refer to 

P.33-16

.)

Post-installation Operation
• Engine Room Under Cover (A, B, Center) and Engine 

Room Side Cover Removal (Refer to GROUP 51 − Under 

Cover 

P.51-15

.)

Post-installation Operation
• Engine Room Under Cover (A, B, Center) and Engine 

Room Side Cover Installation (Refer to GROUP 51 − 

Under Cover 

P.51-15

.)

• Using your Fingers, Press the Lower Arm Ball Joint Dust 

Cover to Check for a Crack or Damage.

• Wheel Alignment Check and Adjustment (Refer to 

P.33-8

.) 

AC708307AE

39 ± 5 N·m
29 ± 4 ft-lb

110 ± 11 N·m
81 ± 8 ft-lb

71 ± 10 N·m
52 ± 7 ft-lb

2

Vehicle front side

1

Multipurpose grease SAE J310,
NLGI No.2 or equivalent

110 ± 11 N·m
81 ± 8 ft-lb

*2

*2

*2

*2

*1,2

*1,2

2

Removal steps 

1. Stabilizer link bracket and 

lower arm connection

2. Lower arm assembly

LOWER ARM

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INSPECTION

M1332001701018

• Check the bushing for wear and deterioration.
• Check the lower arm for bend or breakage.
• Check all bolts for condition and straightness.

.

LOWER ARM BALL JOINT ROTATIONAL 
STARTING TORQUE

Required Special Tool:

• MB991006: Preload socket

1. Move the lower arm ball joint stud back and forth for several 

times, and measure the lower arm ball joint rotation starting 
torque using special tool MB991006.

Standard value: 1.5 − 3.4 N⋅ m (13 − 29 in-lb)

2. If the measured value exceeds the standard value, replace 

the lower arm assembly. (Refer to 

P.33-15

.)

3. If the measured value is within the standard value, check 

that the lower arm ball joint has no looseness or gritty 
feeling. If there is looseness or gritty feeling, replace the 
lower arm assembly. (Refer to 

P.33-15

.)

.

LOWER ARM BALL JOINT DUST COVER CHECK

Refer to 

P.33-9

.

LOWER ARM BALL JOINT DUST COVER 
REPLACEMENT

M1332020000338

Only when the dust cover is damaged accidentally during main-
tenance, replace the dust cover as follows.
1. Remove the lower arm ball joint dust cover.
2. Fill and apply the specified grease into the inside and lip of 

the lower arm ball joint dust cover.

Specified grease:  

Multipurpose grease SAE J310, NLGI No. 2 or equiva-
lent
Application amount:  

Inside the dust cover: 9.0 ± 1.0 g (0.32 ± 0.04 oz), Lip: 

As required

3. Use the ball joint remover and installer (special tool: 

MB990800) to drive in the dust cover to the point where it 
contacts the lower arm assembly.

4. Using your fingers, press the lower arm ball joint dust cover 

to check for a crack or damage.

AC404846

MB991006

AB

AC708466 AD

MB990800

Lower arm
ball joint
dust cover

Lower arm assembly