NO.5 NOISE [WL-C, WE-C (AT)]

id0303c3802400

5
NOISE
DESCRIPTION
Noise is heard from front differential or transfer case.
TROUBLESHOOTING HINTS
•  Joint shaft bearing abrasion or damage
•  RFW hub abrasion
•  Joint shaft abrasion
•  Conventional front differential parts malfunction
•  Incorrect tire pressure
•  Improper oil level
•  Transfer bearing damaged
•  Transfer gear damaged
•  Transfer drive chain damaged

Diagnostic procedure

STEP

INSPECTION

ACTION
1
INSPECT JOINT SHAFT BEARING
•  Is it OK?
Yes
Go to next step.
No
Replace joint shaft bearing.
2
INSPECT RFW HUB
•  Is it OK?
Yes
Go to next step.
No
Replace RFW hub.
3
INSPECT JOINT SHAFT
•  Is it OK?
Yes
Go to next step.
No
Replace joint shaft.
4
INSPECT CONVENTIONAL FRONT DIFFERENTIAL PARTS
•  Are they OK?
Yes
Go to next step.
No
Replace defective part (s).
5
INSPECT TIRE PRESSURE
•  Are they OK?
Yes
Go to next step.
No
Adjust the tire pressure.
6
INSPECT TRANSFER OIL LEVEL
•  Is oil level OK?
Yes
Go to next step.
No
Adjust the oil level.
7
INSPECT TRANSFER INNER PARTS
•  Transfer bearing
•  Transfer gear
•  Transfer drive chain
•  Are they OK?
Yes
Go to next step.
No
Overhaul and check for wear and damage.
Replace if necessary.
8
•  Verify test results.
―  If normal, return to the diagnostic index to service any additional symptoms.
―  If malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis.
•  If the vehicle is repaired, troubleshooting completed.
•  If the vehicle is not repaired or additional diagnostic information is not available.