Mitsubishi Evolution X. Manual — part 892
ON-VEHICLE SERVICE
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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
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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
.)
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
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
.)
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
NOTE:
.
ON-VEHICLE SERVICE
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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
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
.)
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
).
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
.)
NOTE:
.
•
Set the steering wheel to the neutral position.
ON-VEHICLE SERVICE
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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
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
<Driving actuator test item No.06 forcibly (Refer to
.>
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
.>
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
.)
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
).
4. Turn the ignition switch to "ON" position.
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