Mitsubishi Evolution X. Manual - part 892

 

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Mitsubishi Evolution X. Manual - part 892

 

 

ON-VEHICLE SERVICE

TSB Revision

REAR AXLE

27-29

GEAR OIL REPLACEMENT

M1272004600263

DIFFERENTIAL MECHANISM PART

AC705198AC

Filler plug

Drain plug

1. Remove the filler plug.
2. Remove the drain plug and drain oil.
3. Install the drain plug, and tighten it to the specified torque.

Tightening torque: 32 

± 2 N⋅ m (23 ± 2 ft-lb) 

4. Fill the specified gear oil up to the bottom of the filler plug 

hole.

Specified gear oil: MITSUBISHI Genuine DIA QUEEN 
LSD gear oil

Amount to use: 0.55 

± 0.02 dm

3

(0.58 

± 0.02 qt)

5. Install the filler plug, and tighten it to the specified torque.

Tightening torque: 49 

± 10 N⋅ m (37 ± 7 ft-lb)

TORQUE TRANSFER MECHANISM PART

AC705199AC

Filler plug

Drain plug

1. Remove the filler plug.
2. Remove the drain plug and drain oil.
3. Install the drain plug, and tighten it to the specified torque.

Tightening torque: 32 

± 2 N⋅ m (23 ± 2 ft-lb) 

4. Fill the specified gear oil up to the bottom of the filler plug 

hole.

Specified gear oil: DIAMOND ATF-SP III

Amount to use: 0.55 

 0.60 dm

3

(0.58 

 0.63 qt)

5. Install the filler plug, and tighten it to the specified torque.

Tightening torque: 49 

± 10 N⋅ m (37 ± 7 ft-lb)

FLUID LEVEL CHECK

M1272004700022

<WHEN THE SCAN TOOL IS NOT USED>

1. Remove the trunk room side trim lid on the right of the trunk 

room.

2. If the vehicle has been run, leave it for 90 min. or more in an 

ordinary temperature {10 

− 30° C (50 − 86° F)} to allow the 

accumulator internal pressure to drop.
NOTE: If the ambient temperature is 10

°

C (50

°

F) or less, 

allow more time to leave the vehicle to stand idle.

AC705200AB

Oil reservoir

3. Check that the oil reservoir fluid level is in between MAX and 

MIN.

4. If the fluid level is not in between MAX and MIN, fill the 

specified fluid.

Specified fluid: DIAMOND ATF-SP III

5. Install the trunk room side trim lid.

ON-VEHICLE SERVICE

TSB Revision

REAR AXLE

27-30

<WHEN THE SCAN TOOL IS USED>

1. Remove the trunk room side trim lid on the right of the trunk 

room.

CAUTION

Turn the ignition switch to the "LOCK (OFF)" position 
before connecting or disconnecting the scan tool.
2. Set the scan tool to the 16-pin data link connector. (Refer to 

P.27-6

.)

3. Turn the ignition switch to the ON position.
4. Using the scan tool, forcibly activate the hydraulic unit (item 

No. 03) to reduce the pressure inside the accumulator. 
(Refer to GROUP 22A 

− Actuator Test Table

P.22A-113

.)

NOTE: 

.

With the forced activation (oil level check mode), the 
hydraulic unit direction valve is operated 20 times to right 
and left, and then the operation is canceled automati-
cally. Also, using the clear key on the scan tool, the acti-
vation can be forcibly canceled.

When the functions are suspended by the fail-safe func-
tion, the hydraulic unit cannot be forcibly activated.

AC705200AB

Oil reservoir

5. Check that the oil reservoir fluid level is in between MAX and 

MIN.

6. If the fluid level is not in between MAX and MIN, fill the 

specified fluid.

Specified fluid: DIAMOND ATF-SP III

7. Install the trunk room side trim lid.

AYC BLEEDING

M1272004800029

CAUTION

At low temperature the fluid viscosity is so high that air 
bleeding becomes degenerated. Air bleeding should be 
done at normal temperatures {10 to 30

° C (50 to 86° F)}. 

1. Lift up the vehicle.

CAUTION

Turn the ignition switch to the "LOCK (OFF)" position 
before connecting or disconnecting the scan tool.
2. Set the scan tool to the 16-pin data link connector. (Refer to 

P.27-6

.)

3. Turn the ignition switch to the "ON" position.
4. Set the steering wheel in the straight-ahead position.
5. Using the scan tool, forcibly activate the hydraulic unit (item 

No. 02). (Refer to GROUP 22A 

− Actuator Test 

Table

P.22A-113

.)

NOTE: 

.

ON-VEHICLE SERVICE

TSB Revision

REAR AXLE

27-31

Forced activation (air bleeding mode) is continued for 5 
minutes, and then the operation is canceled automati-
cally. Also, using the clear key on the scan tool, the 
forced activation can be canceled.

When the functions are suspended by the fail-safe func-
tion, the hydraulic unit cannot be forcibly activated.

AC705201AB

Vinyl hose

Bleeder
screw

6. Remove the cap on the left of bleeder screw on the torque 

transfer mechanism, and connect the vinyl hose.

7. Gradually rotate the steering wheel at the straight-ahead 

position clockwise. Loosen the left side bleeder screw, and 
check that the air is bled with fluid.

CAUTION

• During the air bleeding, fill the fluid so that the fluid 

constantly remains in the oil reservoir.

• When the oil is filled into the empty oil reservoir, check 

that the oil is filled up under the filter inside the oil res-
ervoir.

8. After the air bleeding, tighten the bleeder screw and set the 

steering wheel at the straight-ahead position.

9. Repeat Steps 6 and 7 for 2 or 3 times. After no air mixture is 

confirmed, tighten the bleeder screw to the specified torque.

Tightening torque: 9.0 

± 1.0 N⋅ m (80 ± 9 in-lb)

10.Perform Steps 5 to 8 for the right bleeder screw. Note to turn 

the steering wheel counterclockwise.

11.When the hydraulic unit is removed, perform air bleeding on 

the ACD side. (Refer to GROUP 22A 

− On-vehicle Service 

P.22A-118

.)

CAUTION

If the air bleeding is insufficient, the noise from the 
hydraulic unit occurs, which may deteriorate the pump 
durability.
12.After the air bleeding, check the fluid level. (Refer to 

P.27-29

.)

AYC OPERATION CHECK

M1272004900026

1. Lift up the vehicles.

CAUTION

Turn the ignition switch to the "LOCK (OFF)" position 
before connecting or disconnecting the scan tool.
2. Set the scan tool to the 16-pin data link connector. (Refer to 

P.27-6

).

3. Start the engine.
4. Set the gear to the 2nd gear or above, operate the scan tool, 

and check from the data list (Item No. 24 and 25) that the 
wheel speed is within 10 

− 20 km/h (6 − 12miles). (Refer to 

GROUP 22A 

− Service Data Table

P.22A-107

.)

NOTE: 

.

Set the steering wheel to the neutral position.

ON-VEHICLE SERVICE

TSB Revision

REAR AXLE

27-32

When turning the steering wheel, AYC operates continu-
ally (operation sound from the torque transfer mechani-
cal part), but it is not system fault. In this case, set the 
steering wheel to the neutral position, and perform the 
following operations in order to stop the operation.

Release the clutch.

Set the gear to "Neutral".

Stop the engine.

5. Operate the scan tool to drive the torque transfer 

mechanism part by the actuator test (item No. 06 and 07) 
forcibly. (Refer to GROUP 22A 

− Actuator Test 

Table

P.22A-113

.)

NOTE: 

.

Drive the clutch operating mode forcibly for 1 minute, 
release the operation automatically. Drive can also be 
cleared forcibly using the Clear key of the scan tool.

If the hydraulic unit function has been stopped by 
fail-safe, the torque transfer differential cannot be forc-
ibly driven.

6. Using the scan tool, check that each wheel speed is under 

the following conditions by the service data (item No. 24 and 
25). (Refer to GROUP 22A 

− Service Data Table

P.22A-107

.)

<Driving actuator test item No.06 forcibly (Refer to

P.22A-113

.>

The left rear wheel is faster 2 km/h (1 mile/h) than right rear 

wheel.

<Driving actuator test item No.07 forcibly (Refer to

P.22A-113

.>

The right rear wheel is faster 2 km/h (1 mile/h) than right rear 

wheel.

NOTE: If the above are not satisfied, check the oil pressure 
as the system may be faulty.

OIL PRESSURE CHECK

M1272005000037

Required Special Tools:

• MB991705: Hose adaptor

• MD998330: Oil pressure gauge Remover

1. Remove the rear wheel (RH) and then rear wheel house 

splash shield. (Refer to GROUP 42 

− Splash Shield 

P.42A-13

.)

2. Lift up the vehicles.

CAUTION

Turn the ignition switch to the "LOCK (OFF)" position 
before connecting or disconnecting the scan tool.
3. Set the scan tool to the 16-pin data link connector. (Refer to 

P.27-6

).

4. Turn the ignition switch to "ON" position.

 

 

 

 

 

 

 

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