Mitsubishi Evolution X. Manual - part 899

DIFFERENTIAL CARRIER ASSEMBLY

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REAR AXLE

27-57

>>C<< OIL SEAL INSTALLATION

AC708665

AC

MB990727

Use special tool MB990727 to press-fit the oil seal.

HYDRAULIC UNIT

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REAR AXLE

27-58

HYDRAULIC UNIT

REMOVAL AND INSTALLATION

M1272005400046

CAUTION

• When connecting the reservoir hose assembly, do not apply lubricant.
•

Pre-removal Operation
• Rear wheel (RH) removal

• Rear wheelhouse splash shield removal (Refer to 

GROUP 42A 

− Splash Shield 

P.42A-13

.)

• Trunk room side trim (RH) removal (Refer to GROUP 52A 

− Interior Trim 

P.52A-11

.)

Post-installation Operation
• Air bleeding (Refer to On-vehicle Inspection − AYC Air 

Bleeding 

P.27-30

)

• Trunk room side trim (RH) installation (Refer to GROUP 

52A 

− Interior Trim 

P.52A-11

.)

• Rear wheelhouse splash shield installation (Refer to 

GROUP 42A 

− Splash Shield 

P.42A-13

.)

• Rear wheel (RH) installation

AC705338

18 ± 7 N·m
14 ± 4 ft-lb

AC705338

3

1

2

9

4

7

5

6

8

10

11

12

13

14

15

16

4.0 ± 2.0 N·m
36 ± 7 in-lb

42 ± 16 N·m
31 ± 11 ft-lb

AB

5.0 ± 2.0 N·m
45 ± 17 in-lb

9

9

18 ± 7 N·m
14 ± 4 ft-lb

11 ± 2 N·m
98 ± 17 in-lb

12 ± 5 N·m
106 ± 44 in-lb

21 ± 3 N·m
16 ± 2 ft-lb

10 ± 3 N·m
89 ± 26 in-lb

26 ± 4 N·m
19 ± 3 ft-lb

26 ± 4 N·m
19 ± 3 ft-lb

18 ± 7 N·m
14 ± 4 ft-lb

No foreign matter should be allowed in the hydraulic unit and hose connection part..

Removal steps 

1.

AYC pressure tube assembly 
mounting bolt

2.

AYC pressure tube assembly and 
hydraulic unit connection

3.

AYC pressure tube assembly and 
AYC differential connection

4.

AYC pressure tube assembly

5.

ACD pressure tube assembly 
mounting bolt

6.

ACD pressure tube assembly and 
hydraulic unit connection

7.

Reservoir hose assembly and 
hydraulic unit connection

8.

Hydraulic unit connector 
connection

9.

Hydraulic unit bracket A, hydraulic 
unit and hydraulic unit bracket B 
connecting bolt

>>

B

<< 10. Hydraulic unit and hydraulic unit 

bracket B

11. Hydraulic unit bracket B
12. Hydraulic unit
13. AYC harness

>>

A

<< 14. RESERVOIR HOSE ASSEMBLY

15. ACD pressure tube assembly
16. Oil reservoir

HYDRAULIC UNIT

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REAR AXLE

27-59

INSTALLATION SERVICE POINTS

.

>>A<< RESERVOIR HOSE ASSEMBLY INSTALLA-
TION

AC705341AB

3 mm
(0.12 in)

Spool

Hydraulic unit

Oil reservoir

1. On the oil reservoir side, insert the hose to the position 

shown in the figure.

2. On the hydraulic unit side, insert the hose to the spool 

shown in the figure.

.

Removal steps (Continued)

HYDRAULIC UNIT

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REAR AXLE

27-60

>>B<< HYDRAULIC UNIT AND HYDRAULIC UNIT 
BRACKET B INSTALLATION

AC705340 AB

Hook

Insert the hook of hydraulic unit bracket B into the body-side 
bracket, and tighten the installation bolt.

HYDRAULIC UNIT DISPOSAL

M1272008300037

CAUTION

• The hydraulic unit has its accumulator filled with a 

high-pressure gas. Never attempt to disassemble with-
out breathing.

• Never throw the accumulator into a fire. Also, never 

attempt to cut or weld it.

• Do not drop or shock to the accumulator.
•

AC705339AB

Accumulator

When drilling a hole in the accumulator, be sure to wear 
safety goggles since drill chips may blow out together 
with the gas.

When discarding the hydraulic unit, make a hole on the accu-
mulator as shown in the figure to release the gas, and then dis-
card.