Mitsubishi Lancer Evolution 7. Manual — part 283
REAR AXLE -
On-vehicle Service
27B-17
<Vehicles with AYC>
Differential part
1. Remove the filler plug.
2. Check that the gear oil level is within the specified range
from the bottom end of the filler plug hole.
3. If the gear oil level exceeds the standard value, add the
specified gear oil up to the bottom end of the filler plug
hole.
Specified gear oil:
Hypoid gear oil API classification GL-5 or higher
SAE viscosity Number 90, 80W
NOTE
10_C or more: SAE90, less than 10_C: SAE80W
4. Fit the filler plug and tighten it to the specified torque.
Tightening torque: 49 ± 9 N·m
Torque transfer mechanism part
1. Remove the filler plug.
2. Check that the gear oil level is within the specified range
from the bottom end of the filler plug hole.
3. If the gear oil level exceeds the standard value, add the
specified gear oil up to the bottom end of the filler plug
hole.
Specified gear oil: ATF-SP III
4. Fit the filler plug and tighten it to the specified torque.
Tightening torque: 49 ± 9 N·m
GEAR OIL CHANGE
<Vehicles with mechanical LSD>
1. Remove the drain plug to discharge the gear oil.
2. Fit the drain plug and tighten it to the specified torque.
Tightening torque: 49 ± 9 N·m
3. Remove the filler plug and add the specified gear oil
up to the bottom end of the filler plug hole.
Filler plug
Upper limit
Lower limit
Gear oil
6 mm
Filler plug
Upper limit
Lower limit
Gear oil
6 mm
REAR AXLE -
On-vehicle Service
REAR AXLE -
On-vehicle Service
27B-18
Specified gear oil:
Hypoid gear oil
MITSUBISHI Genuine Gear Oil Part No. 8149630
EX, CASTROL HYPOY LS (GL-5, SAE 90),
SHELL-LSD (GL-5, SAE 80W - 90) or equivalent
Quantity: 0.55 L
4. Fit the filler plug and tighten it to the specified torque.
Tightening torque: 49 ± 9 N·m
<Vehicles with AYC>
Differential part
1. Remove the drain plug to discharge the gear oil.
2. Fit the drain plug and tighten it to the specified torque.
Tightening torque: 49 ± 9 N·m
3. Remove the filler plug and add the specified gear oil
up to the bottom end of the filler plug hole.
Specified gear oil:
Hypoid gear oil API classification GL-5 or higher
SAE viscosity Number 90, 80W
Quantity: 0.55 ± 0.02 L
NOTE
10_C or more: SAE90, less than 10_C: SAE80W
4. Fit the filler plug and tighten it to the specified torque.
Tightening torque: 49 ± 9 N·m
Torque transfer mechanism part
1. Remove the drain plug to discharge the gear oil.
2. Fit the drain plug and tighten it to the specified torque.
Tightening torque: 49 ± 9 N·m
3. Remove the filler plug.
4. Using the oil suction gun (general service tool), between
the body and differential support arm, apply the specified
gear oil up to the under of the filler plug hall.
Specified gear oil: ATF-SP III
Quantity: 0.65 - 0.7 L
5. Fit the filler plug and tighten it to the specified torque.
Tightening torque: 49 ± 9 N·m
Gear oil
Filler plug
Drain plug
Upper limit
Lower limit
Gear oil
6 mm
Filler plug
Drain plug
Oil suction gun
(general service tool)
REAR AXLE -
On-vehicle Service
27B-19
FLUID LEVEL CHECK
1. Remove the maintenance lid located in the luggage
compartment.
2. <Not using MUT-II>
If the vehicle has been run, leave it for 90 min. or more
in an ordinary temperature (10_C – 30_C) to allow the
accumulator internal pressure to drop.
NOTE
If the ambient temperature is 10_C or less, allow more
time to leave the vehicle to stand idle.
<Using MUT-II>
Set MUT-II to 16 pin diagnostic connector. Turn the ignition
switch to the ON position, operate MUT-II, drive the
hydraulic unit (item No.03) forcibly, release the pressure in
the accumulator.
Caution
Turn the ignition switch to the LOCK (OFF) position
before connecting or disconnecting the MUT-II.
NOTE
(1) To drive (oil level check mode) forcibly, turn the
directional valve of the hydraulic unit 20 turns from
side to side, release the differential automatically.
Drive can also be cleared forcibly using the Clear
key of MUT-II.
(2) If the function has been stopped by fail safe, the
hydraulic unit can not be cleared forcibly.
3. Check that the fluid level in the oil reservoir is in the
range between MAX and MIN.
4. If the fluid level is lower than MIN, add the specified
fluid.
Specified fluid: ATF-SP III
5. Reinstall the maintenance lid.
BLEEDING
1. Lift up the vehicle.
2. Set the MUT-II to the 16-pin diagnosis connector.
Caution
Turn the ignition switch to the LOCK (OFF) position
before connecting or disconnecting the MUT-II.
3. Turn the ignition switch to the ON position.
4. Set the steering wheel in the straight-ahead position.
5. Operating the MUT-II, drive the hydraulic unit (item No.02)
forcibly.
NOTE
(1) Drive the bleeding mode forcibly for 5 minutes, release
the operation automatically. Drive can also be cleared
forcibly using the Clear key of MUT-II.
(2) If the function has been stopped by fail safe, the
hydraulic unit cannot be cleared forcibly.
REAR AXLE -
On-vehicle Service
27B-20
6. Remove the cap of the left bleeder screw on the torque
transfer differential and connect a vinyl hose.
7. Gradually turn the steering wheel clockwise from the
straight-ahead position. At this time, loosen the left bleeder
screw and check that fluid is discharged with air.
8. After air has been completely discharged, tighten bleeder
screw and turn the steering wheel in the straight-ahead
position.
Caution
While the system is being bled of air, add fluid as
necessary to ensure that it is left in the oil reservoir
during the entire procedure.
9. Repeat steps 6 and 7 two to three times until no air
bubbles are recognized in the fluid that comes out. Then,
tighten the bleeder screw to the specified torque.
Tightening torque: 9 ± 1 N·m
10. Perform steps 5 through 8 for the right bleeder screw.
Note, however, that the steering wheel should be turned
conterclockwise.
11. When removing the hydraulic unit, bleed the fluid line
in ACD side. (Refer to GROUP 22 – On-vehicle Service.)
12. After the system has been completely bled of air, check
for the fluid level. (Refer to P. 27B-19.)
Caution
If the system is not completely bled of air, the hydraulic
unit could generate noise, degrading pump durability.
AYC OPERATION CHECK
1. Lift up the vehicles.
2. Set the MUT-II to the 16-pin diagnosis connector.
Caution
Turn the ignition switch to the LOCK (OFF) position
before connecting or disconnecting the MUT-II.
3. Start the engine.
4. Set the gear to the 2nd gear or above, operate MUT-II,
and check from the service data (Item No.09) that the
wheel speed is within 10 km/h to 20 km/h.
NOTE
(1) Set the steering wheel to the neutral position.
(2) When turning the steering wheel, AYC operates
continually (operation sound from the torque transfer
differential), 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
ACD.
D
Release the clutch.
D
Set the gear to ”Neutral”.
D
Stop the engine.
Bleeder
screw
Vinyl hose
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