Mitsubishi Evolution X. Manual - part 877

POWER STEERING GEAR BOX AND LINKAGE

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POWER STEERING

37-31

POWER STEERING GEAR BOX AND LINKAGE

REMOVAL AND INSTALLATION

M1372010901285

CAUTION

• Before removing the steering wheel assembly and driver's air bag module, always refer to GROUP 

52B 

− Service Precautions 

P.52B-25

 and Air bag Module and Clock Spring 

P.52B-386

. Also, posi-

tion the front wheels in a straight ahead direction. If you fail to do this, clock spring for SRS may 
get damage, making the SRS (air bag) inoperative, and it may cause a serious injury to the driver.

• *: 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.

• After installation, perform a calibration for the ASC-ECU to learn the steering wheel sensor neutral 

point. (Refer to GROUP 35C 

− On-vehicle Service, Steering Wheel Sensor Calibration 

P.35C-267

).

Pre-removal Operation
• Power steering fluid draining  (Refer to 

P.37-18

).

• Steering wheel and air bag module assembly removal 

(Refer to 

P.37-22

).

• Steering shaft cover removal (Refer to 

P.37-26

).

• Engine room under cover front (A, B) and engine room 

side cover removal (Refer to GROUP 51 

− Under Cover 

P.51-16

).

• Lower arm removal (Refer to GROUP 33 − Lower Arm 

P.33-15

).

• Center member and front roll stopper assembly removal 

(Refer to GROUP 32 

− Engine Roll Stopper and Center 

Member 

P.32-10

).

Post-installation Operation
• Center member and front roll stopper assembly installa-

tion (Refer to GROUP 32 

− Engine Roll Stopper and Cen-

ter Member 

P.32-10

).

• Lower arm installation (Refer to GROUP 33 − Lower Arm 

P.33-15

).

• Engine room under cover front (A, B) and engine room 

side cover installation (Refer to GROUP 51 

− Under Cover 

P.51-16

).

• Steering shaft cover removal (Refer to 

P.37-26

).

• Steering wheel and air bag module assembly installation 

(Refer to 

P.37-22

).

• Using your fingers, press the dust cover of joints to check 

for a crack or damage.

• Power steering fluid filling (Refer to 

P.37-18

).

• Air bleeding of power steering fluid (Refer to 

P.37-19

).

• Steering wheel at straight-ahead position check

AC708302AB

4

57 ± 7 N·m
42 ± 5 ft-lb

3

10

8

11

6

2

N

N

12

15

13

5.0 ± 2.0 N·m
45 ± 17 in-lb

20 ± 5 N·m
15 ± 3 ft-lb

5

7

14

9

9

1

50 ± 5 N·m
37 ± 4 ft-lb

70 ± 10 N·m
52 ± 7 ft-lb

40 ± 8 N·m
30 ± 5 ft-lb

110 ± 11 N·m
81 ± 8 ft-lb

28 ± 4 N·m
21 ± 3 ft-lb

110 ± 11 N·m
81 ± 8 ft-lb

28 ± 4 N·m
21 ± 3 ft-lb

53 ± 8 N·m
39 ± 6 ft-lb

Removal steps 

>>

B

<<

1.

Steering column bolt (steering 
column shaft assembly and 
steering gear and linkage 
connection)

<<

A

>>

2.

steering column shaft 
assembly and steering gear 
and linkage connection

<<

B

>>

3.

Self-lock nut (Tie-rod end and 
knuckle connection)

4.

Eye bolt

5.

Pressure hose connection

6.

Gasket

7.

Return hose connection

8.

Engine rear roll stopper 
bracket connecting bolt

9.

Front axle crossmember stay

<<

C

>>

10. Front axle cossmember 

assembly

11. Engine rear roll stopper
12. Heat protector

>>

A

<<

13. Joint cover grommet
14. Flunge bolt
15. Steering gear and linkage 

assembly

POWER STEERING GEAR BOX AND LINKAGE

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POWER STEERING

37-32

Removal steps (Continued)

POWER STEERING GEAR BOX AND LINKAGE

TSB Revision

POWER STEERING

37-33

REMOVAL SERVICE POINTS

.

<<A>> DISCONNECTION OF STEERING COL-
UMN SHAFT ASSEMBLY AND STEERING GEAR 
AND LINKAGE

AC700371 AD

Shaft B

Shaft A

Clip

Claw

Disconnect the steering gear from the steering column shaft 
assembly while sliding shaft A to shaft B with the clip claw as 
shown in the figure being pinched.

.

<<B>> SELF-LOCK NUT (TIE-ROD END AND 
KNUCKLE CONNECTION) REMOVAL

CAUTION

• Loosen the self-locking nut (tie-rod end connection) 

from the ball joint, but do not remove here. Use the spe-
cial tool.

•

AC208247AJ

Cord

Bolt

MB991897
or
MB992011

Nut

Ball joint

To prevent the special tool from dropping off, suspend 
it with a rope.

1. Install special tool MB991897 or MB992011 as shown in the 

figure.

AC104739AB

Parallel

Knob

Bolt

Correct

Wrong

2. Turn the bolt and knob to make the special tool jaws parallel, 

then hand-tighten the bolt. After tightening, check that the 
jaws are still parallel.
NOTE: To adjust the special tool jaws to be parallel, set the 
orientation of the knob as shown in the figure.

3. Unscrew the bolt to disconnect the ball joint.

.

POWER STEERING GEAR BOX AND LINKAGE

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POWER STEERING

37-34

<<C>> FRONT SUSPENSION CROSSMEMBER 
REMOVAL 

AC609888

Piece of wood

Transmission jack

AB

1. Jack up and support the crossmember, and remove it.
2. Check the hoses and harnesses for roughness, and then 

remove the front suspension crossmember with the rear roll 
stopper and the steering gear and linkage installed.

INSTALLATION SERVICE POINTS

.

>>A<< JOINT COVER GROMMET INSTALLATION

AC609889 AB

Steering joint
cover assembly

Joint cover
grommet

Steering gear

Protrusion part

Install by aligning the marks of joint cover grommet and steer-
ing gear and linkage as shown in the figure.

.

>>B<< Steering column bolt (connection of 
steering column shaft assembly and steering 
gear and linkage) installation

AC700698 AC

Yoke steering column
assembly

Bolt hole
(Tapped hole)

Bolt hole
(No tapped hole)

Steering column bolt

Clip

Claw

Steering
column bolt

Shaft B

Shaft A

1. While sliding shaft A from shaft B with the clip claw as 

shown in the figure being pinched, connect the steering 
column shaft assembly and the steering gear and linkage.

2. Insert the steering column bolt from the no tapped bolt hole, 

and tighten it to the specified torque.

Tightening torque : 20 

± 5 N⋅ m ( 15 ± 3 ft-lb)