Mitsubishi Montero (2004+). Manual — part 1130
33A-1
GROUP 33A
FRONT
SUSPENSION
CONTENTS
GENERAL DESCRIPTION. . . . . . . . .
FRONT SUSPENSION DIAGNOSIS .
INTRODUCTION TO FRONT
SUSPENSION DIAGNOSIS . . . . . . . . . . . .
TROUBLESHOOTING STRATEGY . . . . . .
SYMPTOM CHART. . . . . . . . . . . . . . . . . . .
SYMPTOM PROCEDURES . . . . . . . . . . . .
SPECIAL TOOLS. . . . . . . . . . . . . . . .
ON-VEHICLE SERVICE. . . . . . . . . . .
FRONT WHEEL ALIGNMENT CHECK AND
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . .
UPPER ARM BALL JOINT END PLAY
CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BALL JOINT DUST COVER CHECK . . . . .
UPPER ARM ASSEMBLY . . . . . . . . .
REMOVAL AND INSTALLATION . . . . . . . .
INSPECTION . . . . . . . . . . . . . . . . . . . . . . .
SHOCK ABSORBER ASSEMBLY . . .
REMOVAL AND INSTALLATION . . . . . . . .
DISASSEMBLY AND ASSEMBLY . . . . . . .
LOWER ARM . . . . . . . . . . . . . . . . . . .
REMOVAL AND INSTALLATION . . . . . . . .
INSPECTION. . . . . . . . . . . . . . . . . . . . . . . .
LOWER ARM BALL JOINT DUST COVER
REPLACEMENT . . . . . . . . . . . . . . . . . . . . .
STABILIZER BAR. . . . . . . . . . . . . . . .
REMOVAL AND INSTALLATION . . . . . . . .
INSPECTION. . . . . . . . . . . . . . . . . . . . . . . .
STABILIZER LINK BALL JOINT DUST
COVER REPLACEMENT . . . . . . . . . . . . . .
SPECIFICATIONS . . . . . . . . . . . . . . .
FASTENER TIGHTENING
SPECIFICATIONS. . . . . . . . . . . . . . . . . . . .
GENERAL SPECIFICATIONS . . . . . . . . . .
SERVICE SPECIFICATIONS . . . . . . . . . . .
GENERAL DESCRIPTION
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FRONT SUSPENSION
33A-2
GENERAL DESCRIPTION
M1331000100084
This is a coil spring-type double wishbone indepen-
dent-type front suspension. This type of suspension
is rigid, has very little variation in roll center height
and provides excellent riding comfort.
CONSTRUCTION DIAGRAM
FRONT SUSPENSION DIAGNOSIS
INTRODUCTION TO FRONT SUSPENSION DIAGNOSIS
M1332009000184
If the rear suspension is faulty, the vehicle will not
track straight or unusual noise will occur. Incorrect
wheel alignment, malfunction of shock absorber, sta-
bilizer bar, coil spring, control arms or out-of-balance
tires may cause these problems.
TROUBLESHOOTING STRATEGY
M1332009100170
Use these steps to plan your diagnostic strategy. If
you follow them carefully, you will be sure that you
have exhausted most of the possible ways to find a
rear suspension fault.
1. Gather information from the customer.
2. Verify that the condition described by the
customer exists.
3. Find the malfunction by following the Symptom
Chart.
4. Verify malfunction is eliminated.
ACX02227AB
COIL SPRING
No.2 CROSSMEMBER
SHOCK ABSORBER
UPPER ARM
LOWER ARM
STABILIZER BAR
FRONT FRAME
FRONT SUSPENSION DIAGNOSIS
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FRONT SUSPENSION
33A-3
SYMPTOM CHART
M1332009400212
SYMPTOM PROCEDURES
INSPECTION PROCEDURE 1: Steering Wheel is Heavy, Vibrates or Pulls to One Side
DIAGNOSIS
STEP 1. Check the tires.
Refer to GROUP 31, Wheel and Tire Diagnosis
Q: Are the tires at normal condition?
YES :
Replace the tires as necessary, then go to
Step 2.
NO :
If out of balance, balance the tires as
necessary. If excessively worn, replace the
tires as necessary and go to Step 5.
STEP 2. Check the wheel alignment.
Q: Is the wheel alignment correct?
YES :
Go to Step 3.
NO :
Adjust it, then go to Step 5.
STEP 3. Check the ball joint.
Q: Is the ball joint in good condition?
YES :
Go to Step 4.
NO :
Replace it, then go to Step 5.
STEP 4. Check the coil spring.
Q: Is the coil spring in good condition?
YES :
Go to Step 5.
NO :
Replace it, then go to Step 5.
STEP 5. Retest the system.
Q: Is the malfunction eliminated?
YES :
The procedure is complete.
NO :
Return to Step 1.
INSPECTION PROCEDURE 2: Excessive Body Rolling
DIAGNOSIS
STEP 1. Check for broken or deteriorated
stabilizer bar.
Q: Is the stabilizer bar in good condition?
YES :
Go to Step 2.
NO :
Replace it, then go to Step 3.
STEP 2. Check for shock absorber damage.
Q: Is the shock absorber in good condition?
YES :
Go to Step 3.
NO :
Replace it, then go to Step 3.
STEP 3. Retest the system.
Q: Is the malfunction eliminated?
YES :
The procedure is complete.
NO :
Return to Step 1.
SYMPTOM
INSPECTION PROCEDURE
REFERENCE PAGE
Steering wheel is heavy, vibrates or pulls to one side 1
Excessive body rolling
2
Poor ride
3
Unequal ride height
4
Noise
5
FRONT SUSPENSION DIAGNOSIS
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FRONT SUSPENSION
33A-4
INSPECTION PROCEDURE 3: Poor Ride
DIAGNOSIS
STEP 1. Check for improper tire inflation
pressure.
Refer to GROUP 31, On-vehicle Service
− Tire Infla-
Q: Is the tire inflation correct?
YES :
Go to Step 2.
NO :
Adjust it, then go to Step 4.
STEP 2. Check for broken or deteriorated coil
spring(s).
Q: Are the coil spring(s) broken or deteriorated?
YES :
Replace it, then go to Step 4.
NO :
Go to Step 3.
STEP 3. Check for shock absorber damage.
Q: Is the shock absorber damaged?
YES :
Replace it, then go to Step 4.
NO :
Go to Step 4.
STEP 4. Retest the system.
Q: Is the malfunction eliminated?
YES :
The procedure is complete.
NO :
Return to Step 1.
INSPECTION PROCEDURE 4: Unequal Ride Height
DIAGNOSIS
STEP 1. Check for broken or deteriorated coil
spring(s).
Q: Are the coil spring(s) broken or deteriorated?
YES :
Replace it, then go to Step 2.
NO :
Go to Step 2.
STEP 2. Retest the system.
Q: Is the malfunction eliminated?
YES :
The procedure is complete.
NO :
Return to Step 1.
INSPECTION PROCEDURE 5: Noise
DIAGNOSIS
STEP 1. Check for lack of lubrication.
Q: Is lubrication inadequate?
YES :
Lubricate it, then go to Step 5.
NO :
Go to Step 2.
STEP 2. Check the tightened parts for looseness
as well as the bushings for wear.
Q: Are the tightened parts and bushings in good
condition?
YES :
Go to Step 3.
NO :
Replace it, then go to Step 5.
STEP 3. Check for broken coil spring(s).
Q: Are the coil spring(s) broken?
YES :
Replace it, then go to Step 5.
NO :
Go to Step 4.
STEP 4. Check for shock absorber damage.
Q: Is the shock absorber damaged?
YES :
Replace it, then go to Step 5.
NO :
Go to Step 5.
STEP 5. Retest the system.
Q: Is the malfunction eliminated?
YES :
The procedure is complete.
NO :
Return to Step 1.
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