1998 MITSUBISHI LANCER EVOLUTION IV transmission

MANUAL TRANSMISSION OVERHAUL – Transmission Case22B-45
REASSEMBLY SERVICE POINTS

ABUSHING INSTALLATION
Press fit the bushing to the illustrated position, while making
sure that the split ends of the bushing do not coincide with
the air purge groove.

BNEEDLE BEARING INSTALLATION
Press fit the needle bearing until it is flush with the case,
while making sure that the model number stamped side is
oriented in the direction shown.

COIL SEAL INSTALLATION
Apply transmission oil to the oil seal lip area.
Transmission oil: DIA QUEEN MULTI-GEAR OIL 75W/85WAir purge groove
Bushing
Bushing
3 mm
Needle bearing Model No.
stamped surface
MD998800

MANUAL TRANSMISSION OVERHAUL – Center Differential22B-46
CENTER DIFFERENTIAL
DISASSEMBLY AND REASSEMBLY
5
43
21
6
1516177
8
910
11
12 13 14 121112
9
12
Apply gear oil to all
moving parts before
installation.
132 {13.5}
Unit: Nm {kgf
m}
Disassembly steps

D1. Center differential drive gear

C2. Center differential flange
A

B3. Taper roller bearing

C4. Snap ring

C5. Front output shaft

C6. Spacer

C7. Side gear

C8. Lock pin

C9. Pinion shaft
C10. Pinion shaft holder

C11. Pinion

C12. Washer

C13. Side gear

C14. Spacer
B

A15. Taper roller bearing
16. Speedometer drive gear
17. Differential case
DISASSEMBLY SERVICE POINTS
A
TAPER ROLLER BEARING REMOVAL
Use the special tool to remove the taper roller bearing.MD998917

MANUAL TRANSMISSION OVERHAUL – Center Differential22B-47
B
TAPER ROLLER BEARING REMOVAL
Use the special tools to remove the taper roller bearing.
REASSEMBLY SERVICE POINTS

ATAPER ROLLER BEARING INSTALLATION
Use the special tool to install the taper roller bearing.

BTAPER ROLLER BEARING INSTALLATION
Use the special tools to install the taper roller bearing.

CSPACER / SIDE GEAR / WASHER /
PINION/PINION HOLDER / PINION SHAFT /
LOCK PIN / FRONT OUTPUT SHAFT / SNAP
RING / CENTER DIFFERENTIAL FLANGE
INSTALLATION
(1) Install the side gear in the center differential case with
the spacer attached.
NOTE
If a new side gear is to be installed, select a spacer
with medium thickness (0.8 – 0.9 mm).
(2) Fit the washer on the back of each pinion. Engage the
4 pinions simultaneously in the side gear.
Rotate the gears to place them in position, then install
the pinion shaft holder.
(3) Insert the pinion shafts.
(4) Install the lock pins in the illustrated direction.
MD998917
MB990932
MB990937
MD998812
MD998823
Lock pin Differential case
Pinion shaft

MANUAL TRANSMISSION OVERHAUL – Center Differential22B-48
(5) Install the front output shaft to the side gear and fit the
snap ring.
(6) Attach the spacer on the other side gear, then install
the side gear in the center differential case.
NOTE
If a new side gear is to be installed, select a spacer
with medium thickness (0.8 – 0.9 mm).
(7) Install the center differential flange on the case while
aligning the mating marks, then secure it temporarily with
machine screw.
(8) Measure the backlash between the side gear and the
pinion.
Standard value: 0.025 – 0.150 mm
(9) If the measurement deviates from the standard value,
correct the backlash using a spacer of different thickness
and check it again.
NOTE
The backlash must be the same on both sides.

DCENTER DIFFERENTIAL DRIVE GEAR
INSTALLATION
(1) Apply sealant to the entire threaded portion of the bolt.
Specified sealant:
THREEBOND 1303 or LOKTITE 648
(2) Tighten the bolts to the specified torque in the illustrated
sequence.
1
8
7
6
5
4
3
2
10
9

MANUAL TRANSMISSION OVERHAUL – Transfer22B-49
TRANSFER
DISASSEMBLY AND REASSEMBLY
10 2
114
8
7
9
5
3
1
6
Apply gear oil to all
moving parts before
installation.
23 {2.4}
Unit: Nm {kgf
m}
Disassembly steps

F1. Air breather
2. Dust seal guard

E3. Oil seal

D4. Oil seal

A5. O-ring

A6. O-ring

C7. Oil seal

B8. Oil seal

A9. O-ring
10. Transfer cover
11. Transfer

MANUAL TRANSMISSION OVERHAUL – Transfer22B-50
REASSEMBLY SERVICE POINTS

AO-RING INSTALLATION
Apply transmission oil to the O-ring.
Transmission oil: DIA QUEEN MULTI-GEAR OIL 75W/85W

BOIL SEAL INSTALLATION
(1) Apply transmission oil to the oil seal lip area.
Transmission oil:
DIA QUEEN MULTI-GEAR OIL 75W/85W
(2) By using the special tool, install the oil seal.

COIL SEAL INSTALLATION
(1) Apply transmission oil to the oil seal lip area.
Transmission oil:
DIA QUEEN MULTI-GEAR OIL 75W/85W
(2) By using the special tool, install the oil seal.

DOIL SEAL INSTALLATION
(1) Apply transmission oil to the oil seal lip area.
Transmission oil:
DIA QUEEN MULTI-GEAR OIL 75W/85W
(2) By using the special tool, install the oil seal.

EOIL SEAL INSTALLATION
(1) Apply transmission oil to the oil seal lip area.
Transmission oil:
DIA QUEEN MULTI-GEAR OIL 75W/85W
(2) By using the special tool, install the oil seal.
MD998800
MB990938
MB990933
MB990891
MB990887
MD998304

MANUAL TRANSMISSION OVERHAUL – Transfer22B-51

FAIR BREATHER INSTALLATION
Apply sealant to the air breather.
Specified sealant: THREEBOND 1501

REAR SUSPENSION – Rear Suspension Assembly34-5
REMOVAL SERVICE POINTS
ABRAKE CALIPER ASSEMBLY REMOVAL
Remove the brake caliper assembly and secure it with a
wire.
BPROPELLER SHAFT DISCONNECTION
(1) Make an alignment mark on the differential carrier
companion flange and propeller shaft flange yoke.
(2) Remove the mounting bolts and nuts of the differential
carrier and propeller shaft.
CCROSSMEMBER MOUNTING BOLT REMOVAL
Support the differential case with a garage jack or transmission
jack and then remove the crossmember mounting bolt.
INSTALLATION SERVICE POINTS
ACROSSMEMBER MOUNTING BOLT
INSTALLATION
Tighten the mounting bolts in the numerical order shown.
NOTE
To ensure both good installation accuracy and ease of
installation, the crossmember mounting holes have different
diameters between front and rear. This is the reason for
specifying the tightening sequence of the mounting bolts.
BPROPELLER SHAFT CONNECTION
Align the alignment mark on the differential carrier with that
of the propeller shaft at installation.
Caution
Oil or grease on the threads of the mounting bolt or nut
can allow the bolt or nut to come loose. Be sure to
degrease the threads before installation.
Bolt size (thread dia. × length mm)
1 to 3: Flange bolt (with washer) 12 × 70
4: Flange bolt (with washer) 12 × 152
5: Bolt (with spring washer + washer) 12 × 105 Front of vehicle
13
3
44
2
55