1998 MITSUBISHI LANCER EVOLUTION IV Workshop Manual

REAR SUSPENSION – Upper Arm Assembly34-6
UPPER ARM ASSEMBLY
REMOVAL AND INSTALLATION
Post-installation Operation
(1) Push the Dust Cover of the Upper Arm Ball Joint
with a Finger to Check for Possible Cracks or
Damage.
(2) Wheel Alignment Check and Adjustment
(Refer to P.34-3.)
1
2
345
6
7
Unit: Nm {kgf
m}
49 {5.0}59 – 69 {6.0 – 7.0}*
74 – 87 {7.5 – 8.9}39 {4.0}
Removal steps
1. Fuel filler cap

2. Bolt
3. Filler neck protector
A4. Upper arm assembly to knuckle
coupling
5. Upper arm assembly mounting bolt
6. Stopper
7. Upper arm assemblyNOTE
Parts marked with
 apply only when RH side is removed
and installed.
Caution
The part marked with * should be first temporarily
tightened, then torqued to specification with the
vehicle on the ground in unloaded condition.
REMOVAL SERVICE POINT
AUPPER ARM ASSEMBLY DISCONNECTION
FROM KNUCKLE
Caution
(1) Only loosen the nut, and not remove it from the ball
joint, and use the special tool.
(2) Hang the special tool with a string to prevent the
parts including the tool from falling apart.
MB990635,
MB991113 or
MB991406
Nut
StringBall joint

REAR SUSPENSION – Upper Arm Assembly34-7
INSPECTION
1. UPPER ARM BALL JOINT TURNING TORQUE
CHECK
(1) Rock the upper arm ball joint stud several times; then,
mount a nut to the stud and, using the special tool,
measure the turning torque of the upper arm ball joint.
Standard value: 0.5 – 2.5 Nm {5 – 25 kgf
cm}
(2) If the measurement exceeds the standard value, replace
the upper arm assembly.
(3) If the measurement falls short of the standard value, check
that the ball joint turns smoothly without excessive play.
If so, the ball joint should still be in good condition for
continued use.
2. UPPER ARM BALL JOINT DUST COVER CHECK
(1) Check the dust cover for cracks or damage by pushing
it with a finger.
(2) If the dust cover is cracked or damaged, replace the
upper arm assembly.
NOTE
A cracked or damaged dust cover can lead to a damaged
ball joint.
If the dust cover is damaged during servicing, replace
it with a new one.
UPPER ARM BALL JOINT DUST COVER
REPLACEMENT
Only when the dust cover is damaged accidentally during
service work, follow these steps to replace it with a new one.
(1) Remove the dust cover.
(2) Pack and apply the specified grease to the inside and
lips of the dust cover.
Molybdenum disulfide-base chassis grease:
SHOWA SHELL SEKIYU SUNLITE MB2, NISSEKI
CLAKNOCK FL, or equivalent
(3) Using the special tool, press the dust cover until it contacts
the snap ring.
(4) Push the dust cover with a finger to ensure that it is
free from cracks or damage.
MB990326
MB990800

REAR SUSPENSION – Trailing Arm Assembly34-8
TRAILING ARM ASSEMBLY
REMOVAL AND INSTALLATION
Post-installation Operation
(1) Push the Dust Cover of the Trailing Arm Ball Joint
with a Finger to Check for Possible Cracks or
Damage.
(2) Wheel Alignment Check and Adjustment
(Refer to P.34-3.)
1
2 3
45
Unit: Nm {kgf
m}
74 – 87 {7.5 – 8.9}
137 – 156 {14.0 – 16.0}*
4
Removal steps
1. Parking brake cable bolt
A2. Trailing arm assembly to knuckle
coupling
3. Trailing arm assembly mounting
bolt
4. Stopper
5. Trailing arm assemblyCaution
The part marked with * should be first temporarily
tightened, then torqued to specification with the
vehicle on the ground in unloaded condition.
REMOVAL SERVICE POINT
ATRAILING ARM ASSEMBLY DISCONNECTION
FROM KNUCKLE
Caution
(1) Only loosen the nut, and not remove it from the ball
joint, and use the special tool.
(2) Hang the special tool with a string to prevent the
parts including the tool from falling apart.
MB990635,
MB991113 or
MB991406
NutString
Ball joint

REAR SUSPENSION – Trailing Arm Assembly34-9
INSPECTION
1. TRAILING ARM BALL JOINT TURNING TORQUE
CHECK
(1) Rock the trailing arm ball joint stud several times; then,
mount a nut to the stud and, using the special tool,
measure the turning torque of the ball joint.
Standard value: 0.5 – 2.5 Nm {5 – 25 kgf
cm}
(2) If the measurement exceeds the standard value, replace
the trailing arm assembly.
(3) If the measurement falls short of the standard value, check
that the ball joint turns smoothly without excessive play.
If so, the ball joint should still be in good condition for
continued use.
2. TRAILING ARM BALL JOINT DUST COVER CHECK
(1) Check the dust cover for cracks or damage by pushing
it with a finger.
(2) If the dust cover is cracked or damaged, replace the
trailing arm assembly.
NOTE
A cracked or damaged dust cover can lead to a damaged
ball joint.
If the dust cover is damaged during servicing, replace
it with a new one.
TRAILING ARM BALL JOINT DUST COVER
REPLACEMENT
Only when the dust cover is damaged accidentally during
service work, follow these steps to replace it with a new one.
(1) Remove the dust cover.
(2) Pack and apply the specified grease to the inside and
lips of the dust cover.
Molybdenum disulfide-base chassis grease:
SHOWA SHELL SEKIYU SUNLITE MB2, NISSEKI
CLAKNOCK FL, or equivalent
(3) Using the special tool, press the dust cover until it contacts
the snap ring.
(4) Push the dust cover with a finger to ensure that it is
free from cracks or damage.
MB990326
MB990800

REAR SUSPENSION – Lower Arm and Toe Control Arm AssembliesREAR SUSPENSION – Lower Arm and Toe Control Arm Assemblies34-10
LOWER ARM AND TOE CONTROL ARM ASSEMBLIES
REMOVAL AND INSTALLATION
Post-installation Operation
(1) Check the Toe Control Arm Ball Joint Dust Cover
for Cracks or Damage by Pushing it with Finger(2) Wheel Alignment Check and Adjustment
(Refer to P.34-3.)
12
3 4 5
6
Unit: Nm {kgf
m}
93 {9.5}*
88 {9.0}* 74 – 87 {7.5 – 8.9}*
88 {9.0}*93 {9.5}*
2
Lower arm assembly removal steps
1. Lower arm assembly and shock
absorber connecting bolt
A2. Lower arm assembly mounting bolt
A3. Lower arm assemblyToe control arm assembly removal
steps
B4. Toe control arm and knuckle
connection
C5. Toe control arm assembly mounting
bolt
6. Toe control arm assembly
Caution
The part marked with * should be first temporarily
tightened, then torqued to specification with the
vehicle on the ground in unloaded condition.
REMOVAL SERVICE POINTS
ALOWER ARM ASSEMBLY MOUNTING BOLT
REMOVAL
Place mating marks on the lower arm and the eccentric cam
bolt before removal.Mating marks

REAR SUSPENSION – Lower Arm and Toe Control Arm Assemblies34-11
BTOE CONTROL ARM AND KNUCKLE
DISCONNECTION
Caution
(1) Use the special tool to loosen the nut only; do not
removal it from the ball joint.
(2) Tie the special tool with a cord not to let it fall off.
CTOE CONTROL ARM ASSEMBLY MOUNTING
BOLT REMOVAL
Place mating marks on the toe control arm and the eccentric
cam bolt before removal.
INSTALLATION SERVICE POINT
ALOWER ARM ASSEMBLY INSTALLATION
Install the lower arm assemblies according to the identification
mark stamped in the illustrated position.
INSPECTION
1. TOE CONTROL ARM BALL JOINT TURNING
TORQUE CHECK
(1) After shaking the ball joint stud several times, install the
nut to the stud and use the special tool to measure the
turning torque of the ball joint.
Standard value: 0.5 – 2.5 Nm {5 – 25 kgf
cm}
(2) When the measured value exceeds the standard value,
replace the toe control arm assembly.
(3) When the measured value is lower than the standard
value, check that the ball joint turns smoothly without
excessive play. If so, it is possible to use that ball joint.
MB990635,
MB991113 or
MB991406
Nut
StringBall joint
Eccentric
cam bolt Mating marks
L: LH side
R: RH side
MB990326

REAR SUSPENSION – Lower Arm and Toe Control Arm Assemblies34-12
2. TOE CONTROL ARM SLIDE BUSHING OPERATING
TORQUE CHECK
(1) Insert a bolt into the slide bushing of the toe control arm.
Fit a washer onto the bolt from the opposite end and
screw a nut onto it. Turn the inner cylinder (together with
the washer) several turns, then measure the toe control
arm slide bushing operating torque using the special tool.
Standard value: 0.2 – 1.5 Nm {2 – 15 kgf
cm}
(2) If the measurement exceeds the standard value, replace
the toe control arm assembly.
(3) If the measurement falls short of the standard value, check
that the slide bushing turns smoothly without excessive
play. If so, the slide bushing should still be in good condition
for continued use.
3. TOE CONTROL ARM BALL JOINT DUST COVER
CHECK
(1) Check the dust cover for cracks or damage by pushing
it with a finger.
(2) If the dust cover is cracked or damaged, replace the
toe control arm assembly.
NOTE
A cracked or damaged dust cover can lead to a damaged
ball joint.
If the dust cover is damaged during servicing, replace
it with a new one.
TOE CONTROL ARM BALL JOINT DUST
COVER REPLACEMENT
Only when the dust cover is damaged accidentally during
service work, follow these steps to replace it with a new one.
(1) Remove the dust cover.
(2) Pack and apply the specified grease to the inside and
lips of the dust cover.
Molybdenum disulfide-base chassis grease:
SHOWA SHELL SEKIYU SUNLITE MB2, NISSEKI
CLAKNOCK FL, or equivalent
(3) Using the special tool, press the dust cover until it contacts
the snap ring.
(4) Push the dust cover with a finger to ensure that it is
free from cracks or damage.
MB990326
MB990800

REAR SUSPENSION – Shock Absorber Assembly34-13
SHOCK ABSORBER ASSEMBLY
REMOVAL AND INSTALLATION
Pre-removal and Post-installation Operation
Trunk Room Side Trim Removal and Installation

1
2
34
Unit: Nm {kgf
m}
44 {4.5}
88 {9.0}*
Removal steps
1. Cap
2. Shock absorber mounting nuts
3. Bolt
4. Shock absorber assemblyCaution
The part marked with * should be first temporarily
tightened, then torqued to specification with the
vehicle on the ground in unloaded condition.