Mitsubishi Outlander: Front Axle Diagnosis

TROUBLESHOOTING STRATEGY

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 front axle 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.

SYMPTOM CHART

SYMPTOM PROCEDURE

INSPECTION PROCEDURE 1: Noise during Wheel Rotation

DIAGNOSIS

STEP 1. Check the wheel bearing end play.

1. Remove the caliper assembly and suspend it with a wire.
2. Remove the brake disc from the front hub.
3. Attach a dial gauge as shown in the illustration, and then measure the end play while moving the hub in the axial direction.

Limit: 0.05 mm (0.002 inch)

Q: Is the wheel bearing end play within the limit?

YES : Go to step 2.

NO : Replace the part, then go to Step 5.

STEP 2. Check the driveshaft and inner shaft for bending.

Q: Is the driveshaft and inner shaft bent?

YES : Go to step 3.

NO : Replace the part. Then go to Step 5.

STEP 3. Check the center bearing for wear.

Q: Is the center bearing worn?

YES : Replace the bearing. Then go to Step 5.

NO : Go to step 4.

STEP4. Check the driveshaft assembly for wear or damage.

Q: Is the driveshaft assembly worn or damaged?

YES : Replace the driveshaft assembly. Then go to Step 5.

NO : There is no action to be taken.

STEP 5. Retest the system.

Q: Is the abnormal noise eliminated?

YES : The procedure is complete.

NO : Repeat from Step 1.

INSPECTION PROCEDURE 2: Noise Due to Excessive Play of Wheel in Turning Direction

DIAGNOSIS

STEP 1. Check for play in the inner shaft and side gear serration, the driveshaft and side gear serration, or the driveshaft and front hub serration.

Q: Is the play found?

YES : Replace the part. Then go to Step 2.

NO : The procedure is complete.

STEP 2. Retest the system.

Q: Is the abnormal noise eliminated?

YES : The procedure is complete.

NO : Repeat from Step 1.

Special Tools

MB990925 BEARING AND OIL SEAL INSTALLER SET

On-vehicle Service

WHEEL BEARING END PLAY CHECK

1. Remove the front caliper assembly and front brake disc, and retain the front caliper assembly with a wire and the like to prevent from falling.

2. Set a dial gauge as shown in the figure. Move the hub in the axial direction and measure the end play.

Limit: 0.05 mm (0.002 inch)

3. If the play exceeds the limit, disassemble hub knuckle to check each component. If the front hub bearing is faulty, replace it.

4. After checking, install the front brake disc and the front caliper assembly.

HUB BOLT REPLACEMENT

Required Special Tools:

• MB990767: Front Hub and Flange Yoke Holder
• MB991618: Hub Bolt Remover

1. Remove the front caliper assembly and front brake disc, and retain the front caliper assembly with a wire and the like to prevent from falling.

2. Use special tool MB991618 to remove the hub bolts.

3. Install the plain washer to the new hub bolt, and install the bolt with a nut while holding the hub with special tool MB990767.

4. Install the front brake disc and the front caliper assembly.

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