oil MITSUBISHI LANCER EVOLUTION 2007 Service Repair Manual

REAR AXLE -On-vehicle Service27B-17

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

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 limitGear oil
6mm
Filler plug
Upper limit
Lower limitGear oil
6mm

REAR AXLE -On-vehicle ServiceREAR AXLE -On-vehicle Service27B-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

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 limitGear oil
6mm
Filler plug
Drain plug
Oil suction gun
(general service tool)

REAR AXLE -On-vehicle Service27B-19
FLUID LEVEL CHECK
1. Remove the maintenance lid located in the luggage
compartment.
2.
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.

Set MUT-IIto 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-IIto 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 Service27B-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-IIto 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.
DRelease the clutch.
DSet the gear to ”Neutral”.
DStop the engine.
Bleeder
screw
Vinyl hose

REAR AXLE -On-vehicle Service27B-21
5. Operate the MUT-II, drive the torque transfer differential
(item No.06 and 07) forcibly.
NOTE
(1) Drive the clutch operating mode forcibly for 1 minutes,
release the operation automatically. Drive can also
be cleared forcibly using the Clear key of MUT-II.
(2) If the hydraulic unit function has been stopped by
fail-safe, the torque transfer differential cannot be
forcibly driven.
6. Operating the MUT-II, by service data (item no.07 and 08),
check the condition of the wheel speed below.

The left rear wheel is faster 2km/h than right rear wheel.

The right rear wheel is faster 2km/h than left rear wheel.
NOTE
If the above are not satisfied, check the oil pressure as
the system may be faulty.
OIL PRESSURE CHECK
1. Lift up the vehicle.
2. Set the MUT-IIto 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 ON.
4. Disconnect the hydraulic unit and the hydraulic unit hose
assembly, connect the special tool to L port, put the lid
to R port or connect the hydraulic unit hose assembly
disconnected from L port to R port.
5. Operating the MUT-II, drive the hydraulic unit forcibly
(item No.02).
NOTE
(1) Drive the operation check mode of the clutch left
side for 1 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.
6. Check that the generated oil pressure of the hydraulic
unit satisfies the standard value.
Standard value: 0.9 – 1.1 MPa
Caution
While the oil pressure is checked, add fluid as
necessary to ensure that it is left in the oil reservoir
during the entire procedure.
7. Check the oil pressure of the clutch right side following step
4 through 6. Connect the special tool to R port, put the lid
to L port or hydraulic unit hose assembly disconnected
from R port to L port, use the MUT-IIdrive item No.07
(operation check mode of clutch right side) forcibly.
MD998330
MB991705

REAR AXLE -On-vehicle Service27B-22
8. If the measured value exceeds the standard value, replace
the hydraulic unit.
9. Connect the hydraulic unit and the hydraulic unit hose
assembly, and connect the torque transfer differential and
hydraulic unit hose assembly, tighten the flare nut in
specified torque.
Tightening torque: 34±5 N·m (Thread is not lubricated)
26±4 N·m (Thread is lubricated)
10. Supply the specified fluid up to the MAX level of the
oil reservoir, and bleed.
Specified fluid: ATF-SP III
Quantity: 1 L
WHEEL BEARING AXIAL PLAY CHECK
1. Remove the brake caliper and brake disc.
2. Check the bearing’s axial play.
Place a dial gauge against the hub surface; then move
the hub in the axial direction and check whether or not
there is axial play.
Limit: 0.05 mm
3. If the axial play exceeds the limit, the castle nut should
be tightened to the specified torque 225±25 N·m and
check the axial play again.
4. Replace the rear hub assembly if an adjustment cannot
be made to within the limit.
WHEEL BEARING ROTARY-SLIDING
RESISTANCE CHECK
1. Remove the brake caliper and brake disc.
2. After turning the hub a few times to seat the bearing,
wind a rope around the hub bolt and turn the hub by
pulling at a 90_angle with a spring balance. Measure
to determine whether or not the rotary-sliding resistance
of the rear hub is at the limit value.
Limit: 22 N or less

REAR AXLE -On-vehicle Service27B-23
3. If the limit value is exceeded, loosen the flange nut and
then tighten it to the specified torque 225±25 N·m and
check the rear hub rotary sliding resistance again.
4. Replace the rear hub assembly if an adjustment cannot
be made to within the limit.
HUB BOLT REPLACEMENT
1. Remove the brake caliper and brake disc.
2. Use the special tools to remove the hub bolts.
NOTE
To retain a space for removing the hub bolts, remove
near the retainer spring mounting position.
3. Install the plain washer to the new hub bolt, and install
the bolt with a nut.
DIFFERENTIAL CARRIER OIL SEAL
REPLACEMENT
Differential part
1. Remove the drive shaft. (Refer to P. 27B-29.)
2. Remove the oil seal from the differential carrier.
3. Using the special tool, drive a new oil seal all the way
into position.
4. Coat the oil seal lips and the drive shaft surface in contact
with the oil seal with multi-purpose grease.
5. Replace the drive shaft circlip with a new one and mount
the drive shaft to the differential carrier. (Refer to P.
27B-29.)
6. Check for correct wheel alignment. (Refer to GROUP
34 – On-vehicle Service.)
MB991618MB990767
Plain
washerMB990767
MB990938
MB991115

REAR AXLE -On-vehicle Service27B-24
Torque transfer mechanism part
1. Remove the drive shaft. (Refer to P. 27B-29.)
2. Remove the oil seal from the differential carrier.
3. Using the special tool, drive a new oil seal all the way
into position.
4. Coat the oil seal lips and the drive shaft surface in contact
with the oil seal with the specified grease.
Specified grease: Vaseline
5. Replace the drive shaft circlip with a new one and mount
the drive shaft to the differential carrier. (Refer to P.
27B-29.)
6. Check for correct wheel alignment. (Refer to GROUP
34 – On-vehicle Service.)
ACTION WHEN BATTERY RUNS OUT
When the engine is started using a booster cable where the
battery has completely run down and you attempt to start
the vehicle without waiting for the battery to recover a certain
charge, the engine can misfire and you just cannot start to
move it. In such cases, charge the battery sufficiently; or,
remove the AYC battery cable from the battery fuse assembly
to make AYC inactive before attempting to start the vehicles.
When the battery cable is removed, the ACD mode indicator
lamp lights up. After the battery has been recharged, fit the
battery cable back again and start the engine to ensure that
the ACD mode indicator lamp is off.
MD998829
MD998813 MD998812
Battery fuse assembly
Battery cable
for AYC

REAR AXLE -Rear Hub Assembly27B-25
REAR HUB ASSEMBLY
REMOVAL AND INSTALLATION
Caution
If the vehicle is equipped with the Brembo disc brake, during maintenance, take care not to contact
the parts or tools to the caliper because the paint of caliper will be scratched. And if there is
brake fluid on the caliper, wipe out quickly.
Pre-removal Operation
Gear Oil Draining (Refer to P. 27B-17.)Post-installation Operation
DGear Oil Filling (Refer to P. 27B-17.)
DParking Brake Lever Stroke Adjustment (Refer to
GROUP 36 – On-vehicle Service.)
2
118±19 N·m
4
1
3
225±25 N·m
8
7
6
5
10
9
54±5 N·m
81±6 N·m
Removal steps
AA"1. Rear brake caliper
2. Rear brake disc
3. Parking brake shoe & lining assembly
(Refer to GROUP 36 - Parking Brake
Drum.)
4. Clip5. Parking brake cable connection
6. Split pin
AB""AA7. Drive shaft nut
8. Rear drive shaft assembly
AC"9. Rear hub assembly
10. Backing plate

REAR AXLE -Drive Shaft27B-29
DRIVE SHAFT
REMOVAL AND INSTALLATION
Caution
1. If the vehicle is equipped with the Brembo disc brake, during maintenance, take care not to
contact the parts or tools to the caliper because the paint of caliper will be scratched. And
if there is brake fluid on the caliper, wipe out quickly.
2. With the part marked with *, first temporarily tighten it, then ground the vehicle and tighten
it to specification in unloaded condition.
Pre-removal Operation
DGear Oil Draining (Refer to P.27-17.)
DCenter Exhaust Pipe Removal (Refer to GROUP
15.)Post-installation Operation
DPress dust cover with a finger to check for crack
or damage in the dust cover.
DCenter Exhaust Pipe Installation (Refer to GROUP
15.)
DGear Oil Filling (Refer to P.27-17.)
DParking Brake Lever Stroke Check and Adjustment
DWheel Alignment Check and Adjustment (Refer to
GROUP 34 – On-vehicle Service.)
4
1
3
7
6510
2
8
9
11
12
225±25 N·m
54±5 N·m
88±10 N·m*
81±6 N·m*
81±6 N·m
25±6 N·m
Removal steps
AA"1. Rear brake caliper
2. Rear brake disc
3. Parking brake shoe & lining assembly
(Refer to GROUP 36 - Parking Brake
Drum.)
4. Clip
5. Parking brake cable connection
6. Split pinAB""BA7. Drive shaft nut
8. Vehicle speed sensor ABS or ACD>
9. Knuckle and trailing arm connection
10. Knuckle and lower arm connection
11. Knuckle and toe-control arm connec-
tion
AC""AA12. Rear drive shaft assembly