1998 MITSUBISHI LANCER EVOLUTION IV oil

REAR AXLE – Hydraulic Unit 27-50
HYDRAULIC UNIT
REMOVAL AND INSTALLATION
Pre-removal Operation
(1) Trunk Side Trim Removal
(2) Hydraulic Piping Fluid DrainingPost-installation Operation
(1) Hydraulic Piping Fluid Filling and Bleeding
(Refer to P.27-29.)
(2) Trunk Side Trim Installation
1 23 45
6
7 8 9
10 11 12
1314
Unit: Nm {kgf
m}
12 {1.2}
4
12 {1.2}
18 {1.8}
12 {1.2}
12 {1.2} 18 {1.8}
34 {3.5}
34 {3.5}
Removal steps
1. Dust guard
2. Suction hose and return hose con-
nection
3. Hydraulic unit hose assembly con-
nection
4. Hydraulic unit and bracket assem-
bly mounting bolt
C5. Hydraulic unit and bracket assem-
bly
6. Hydraulic unit
7. Hydraulic unit bracket
8. AYC harness9. Hydraulic unit bracket
10. Hydraulic unit hose assembly
B11. Return hose
B12. Suction hose
A13. Grommet
14. Oil reservoir
Caution
(1) When connecting the return hose and suction
hose, do not apply lubricant.
(2) No foreign matter should be allowed in the
hydraulic piping and joints.

FRONT SUSPENSION – Service Specifications / Special Tools33A-2
SERVICE SPECIFICATIONS

ItemsStandard value
Toe-in mm–3
3
Camber–1
00’ ± 30’
(difference between right and left wheel: less than 30’)
Caster3
50’ ± 30’
(difference between right and left wheel: less than 30’)
Kingpin inclination13
25’
Lower arm ball joint rotation starting torque Nm {kgfcm}2.0 – 8.8 {20 – 90}

Same as EVOLUTION-IV except for following.
ItemsStandard value
Camber (selectable from 2 options)–1
00’ ± 30’ or –2
00’ ± 30’
(difference between right and left wheel: less than 30’)
Caster3
54’ ± 30’
(difference between right and left wheel: less than 30’)
Kingpin inclination14
18’
SPECIAL TOOLS
ToolNumberNameUse
A
BA: MB991237
B: MB991238A: Spring
compressor
body
B: Arm setCoil spring compression
MB991006Preload socketLower arm ball joint rotation starting torque
measurement

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

ABS – Troubleshooting35B-7
Code No.33: Stop lamp switch system (open circuit or
stop lamp stays ON)Probable cause
This code is output, if the stop lamp switch is continuously on for 15 minutes or
more.
Malfunction of stop lamp switch

Malfunction of wiring harness or connector

Malfunction of ABS-ECU
OK
Check the trouble symptom.NGCheck the harness wire, and repair
if necessary.

Between dedicated fuse No. 11
and ABS-ECU
OK
Check the trouble symptom.NGReplace the ABS-ECU.
OK
Check the trouble symptom.NGCheck the harness wire, and repair
if necessary.

Between stop lamp switch and
ABS-ECU
OK
Check the following connectors:
B-15, B-21, B-25, B-32, B-65NG
Repair
OK
Check the following connector:
B-25NG
Repair
YES
Measure at the ABS-ECU connector
B-25.

Disconnect the connector, and
measure at the harness side
connector.

Stop lamp switch: ON

Voltage between 34 and body
ground
OK:Battery voltageNG
Check the following connectors:
B-25, B-32, B-65NG
Repair
OK
Stop lamp switch checkNG
Repair
Does the stop lamp turn on and off
normally?NOStop lamp switch installation checkNG
Repair
Code No. 41, 42, 43, 44: Solenoid valve systemProbable cause
ABS-ECU monitors the solenoid valve energization circuit at all times. This code is
output when no current flows through the solenoid even when ABS-ECU energizes
it or when current continues flowing through the solenoid even when ABS-ECU
deenergizes it, which is considered to be attributable to an open- or short-circuited
solenoid coil or open- or short-circuited harness.
Defective hydraulic unit

Defective harness or connector

Defective ABS-ECU
OK
Replace the ABS-ECU.
OK
Check the trouble symptom.NGCheck the harness between hydraulic
unit (solenoid valve) and ABS-ECU.NG
Repair
OK
Check the trouble symptom.NGCheck and repair the harness between
hydraulic unit and valve relay.
OK
Check the following connectors:
A-21, B-24, B-25NG
Repair
OK
Measure at A-22 hydraulic unit connec-
tor and A-76 valve relay connector.

Disconnect the connector and
measure at the harness side.

Continuity across the following
terminals
Hydraulic Valve relay
unit side side
11–3
OK:Battery voltageNGCheck the following connectors:
A-22, A-76NG
Repair
Check the solenoid valve.NGReplace the hydraulic unit.

37A-1
STEERING
CONTENTS
SERVICE SPECIFICATIONS 2. . . . . . . . . . . . . .
SPECIAL TOOLS 2. . . . . . . . . . . . . . . . . . . . . . . .
ON-VEHICLE SERVICE 2. . . . . . . . . . . . . . . . . .
1. Steering Angle Check 2. . . . . . . . . . . . . . . . .
2. Oil Pump Belt Tension Check and
Adjustment 2. . . . . . . . . . . . . . . . . . . . . . . . . . .
STEERING WHEEL
3. . . . . . . . . . . . . . . . . . . .
POWER STEERING GEAR & LINKAGE 3. . .
POWER STEERING OIL PUMP 7. . . . . . . . . . .
POWER STEERING FLUID COOLER 9. . . . .

STEERING – Service Specifications / Special Tools / On-vehicle Service37A-2
SERVICE SPECIFICATIONS
ItemsStandard value
Steering angleEVOLUTION-IVInner wheel33
30’ ± 2

Outer wheel28
20’
EVOLUTION-VInner wheel33
10’ ± 2

Outer wheel28
10’
Steering gearPinion total turning torque
Nm {kgfcm}
Total turning torque0.9 – 1.7 {9 – 17}
Nm {kgf
cm}Torque fluctuations0.4 {4} or less
SPECIAL TOOLS
ToolNumberNameUse
MB991197Installer barPressfitting of gear housing oil seal
MB991199Oil seal installer
MB991214Oil seal protectorInstallation of rack assembly
ON-VEHICLE SERVICE
1. STEERING ANGLE CHECK
Locate front wheels on turning radius gauge and measure
steering angle.
Standard value:
Inner wheel
33
30’ ± 2

33
10’ ± 2

Outer wheel
28
20’
28
10’
When the angle is not within the standard value, the toe
is probably incorrect. Adjust toe (Refer to GROUP 33A –
On-vehicle Service) and recheck steering angle.
2. OIL PUMP BELT TENSION CHECK AND
ADJUSTMENT
Refer to GROUP 11 – Engine Adjustments.

STEERING – Power Steering Gear & Linkage37A-4
DISASSEMBLY AND REASSEMBLY
1 2
3
4
5 6
7
8 9 10 11 12 13 14 15
16
17
1833
20
35
22 23
24 25 26
27 29
31
Unit: Nm {kgf
m}
22 {2.2}
3034
49 – 59
{5.0 – 6.0}
28
19
21
59 {6.0}
25 {2.5}
59 { 6.0}
1
13 {1.3}
88 {9.0}
7
32
10 2 22
20
18
7
1034
16
30
3128 27
Steering gear seal kit
Flare nut
Repair kit grease
Disassembly steps
1. Feed pipe
2. O-ring
N3. Lock nut
N4. Tie rod end
M5. Dust cover
6. Clip
L7. Band
8. Bellows
K9. Tie rod
K10. Tab washer
JPinion total turning torque adjustment
11. Lock nut
A12. Rack support cover
13. Support spring
14. Rack support
I15. End plug
16. Lock nut
17. Valve housing assemblyBH18. Lower oil seal
B19. Pinion & valve assembly
CG20. Seal ring
DF21. Upper bearing
DF22. Upper oil seal
23. Valve housing
EE24. Circlip
F25. Rack stopper
FD26. Rack bushing
GD27. Oil seal
28. O-ring
FC29. Rack assembly
C30. Seal ring
31. O-ring
HB32. Lower bearing
IB33. Needle bearing
JA34. Oil seal
35. Gear housing

STEERING – Power Steering Gear & Linkage37A-5
LUBRICANT AND SEALANT APPLICATION POINTS
Same as before.
DISASSEMBLY SERVICE POINT
Follow the conventional procedures.
REASSEMBLY SERVICE POINTS
Follow the conventional procedures except followings.
AOIL SEAL INSTALLATION
CRACK ASSEMBLY INSTALLATION
(1) Apply a coating of repair kit grease to the rack tooth
face.
Caution
Do not close the vent hole in the rack with grease.
(2) Cover rack serrations with special tool.
(3) Apply the specified fluid on the special tool, seal ring
and O-ring surfaces.
Specified fluid:
MITSUBISHI GENUINE ATF II
Caution
Do not use ATF-SP II.
(4) Slowly insert the special tool-covered rack into the gear
housing from power cylinder side.
Caution
When inserting the rack, align the oil seal center with
the tip of the special tool to prevent the retainer spring
from slipping.
MB991197 Gear housing
Oil seal
MB991199
Vent hole
Seal ring, O-ring
MB991214
Oil seal