Mitsubishi Montero (2002-2004). Manual — part 418
ON-VEHICLE SERVICE
TSB Revision
FRONT SUSPENSION
33A-7
NOTE: Solid lines show caster, broken lines show camber.
UPPER ARM BALL JOINT END PLAY CHECK
M1332011400026
1. Raise the vehicle.
2. Move the upper arm up and down with your hands to check
for an excessive play in the axial direction of the ball joint. If
there is an excessive play, replace the upper arm ball joint
assembly.
BALL JOINT DUST COVER CHECK
M1332008600224
1. Press the dust cover with your finger to check that there are
no cracks or damage in the dust cover.
2. If the dust cover is cracked or damaged, replace the upper
arm ball joint assembly, lower arm ball joint assembly or
stabilizer link.
NOTE: If the dust cover is cracked or damaged, it is possible
that there may also be damage to the ball joint.
ACX02270 AB
(STANDARD VALUE)
(STANDARD VALUE)
"A"DIRECTION
"A"DIRECTION
GRADUATION AT THE
REAR ADJUSTING CAM
GRADUATION AT THE
FRONT ADJUSTING CAM
UPPER ARM ASSEMBLY
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FRONT SUSPENSION
33A-8
UPPER ARM ASSEMBLY
REMOVAL AND INSTALLATION
M1332004300050
CAUTION
*: Indicates parts which should be temporarily tightened, and then fully tightened with the vehicle on
the ground in an unladen condition.
Required Special Tool:
• MB991897: Ball Joint Remover
Post-installation Operation
• Check the dust cover for cracks or damage by pushing it
with your finger.
• Wheel Alignment Check and Adjustment (Refer to
.)
ACX00714 AB
7
5
6
7
1
3
2
4
147
±
10 N
·
m *
109
±
7 ft-lb *
30
±
4 N
·
m
22
±
3 ft-lb
74
±
14 N
·
m
55
±
10 ft-lb
147
±
10 N
·
m *
109
±
7 ft-lb *
REMOVAL STEPS
1. FRONT WHEEL SPEED SENSOR
BRACKET MOUNTING BOLT
2. CLIP
3. BRAKE HOSE
<<A>>
4. UPPER ARM BALL JOINT AND
KNUCKLE CONNECTION
5. UPPER ARM ASSEMBLY AND
FRONT FRAME CONNECTION
6. UPPER ARM ASSEMBLY
7. UPPER ARM BALL JOINT
ASSEMBLY
REMOVAL STEPS (Continued)
UPPER ARM ASSEMBLY
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FRONT SUSPENSION
33A-9
REMOVAL SERVICE POINT
.
<<A>> UPPER ARM BALL JOINT AND KNUCKLE DISCON-
NECTION
CAUTION
• Do not remove the nut from ball joint. Loosen it and use
special tool MB991897 to avoid possible damage to ball
joint threads.
• Hang special tool MB991897 with a cord to prevent it
from falling.
1. Install special tool MB991897 as shown in the figure.
2. Turn the bolt and knob as necessary to make the jaws of
special tool MB991897 parallel, tighten the bolt by hand and
confirm that the jaws are still parallel.
NOTE: When adjusting the jaws in parallel, make sure the
knob is in the position shown in the figure.
3. Tighten the bolt with a wrench to disconnect the ball joint.
INSPECTION
M1332004400057
• Check the bushing for wear and deterioration.
• Check the upper arm for bend or breakage.
• Check all bolts for condition and straightness.
.
UPPER ARM BALL JOINT TURNING TORQUE CHECK
Required Special Tool:
• MB990326: Preload Socket
1. After shaking the ball joint stud several times, install the nut
to the stud and use special tool MB990326 to measure the
turning torque of the ball joint.
Standard value: 0.4
− 2.5 N⋅m (4 − 22 in-lb)
2. If the measured value exceeds the standard value, replace
the upper arm ball joint assembly.
3. If the measured value is lower than the standard value,
check that the upper arm ball joint turns smoothly without
excessive play. If so, it is possible to use that ball joint.
.
AC106820 AB
CORD
BOLT
MB991897
NUT
BALL JOINT
AC106821
KNOB
PARALLEL
BOLT
GOOD
BAD
AB
ACX00716
MB990326
AB
UPPER ARM ASSEMBLY
TSB Revision
FRONT SUSPENSION
33A-10
UPPER ARM BALL JOINT DUST COVER CHECK
1. Press the dust cover with your finger to check that there are
no cracks or damage in the dust cover.
2. If the dust cover is cracked or damaged, replace the upper
arm ball joint assembly.
NOTE: If the dust cover is cracked or damaged, it is possible
that there may also be damage to the ball joint. If it is dam-
aged during service work, replace the dust cover.
BALL JOINT DUST COVER REPLACEMENT
M1332008000136
CAUTION
Do not apply grease to the place (tapered section) where
the threaded section of the ball joint connects with the
knuckle. Wipe the grease off if it is applied to this area. To
prevent the grease from being applied to the ball joint con-
nection (taper) with knuckle, do not compress the dust
cover before installation.
Only when the dust cover is damaged accidentally during ser-
vice work, replace the dust cover as follows:
1. Remove the clip ring, and then remove the dust cover.
2. Apply multipurpose grease to the inside of the dust cover as
shown.
3. Apply multipurpose grease to the shown parts inside the
dust cover and the ball joint stud.
4. Wrap plastic tape around the upper arm ball joint stud, and
then install the dust cover to the upper arm ball joint.
5. Secure the dust cover in place with the clip ring.
6. Press the dust cover with your finger to check that there are
no cracks or damage in the dust cover.
ACX00717 AB
28 mm
(1.1 in)
OR MORE
CLIP RING
DUST
COVER
TAPERED
SECTION
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