Cause
| Correction
|
DEFINITION: A faulty internal transfer case component that causes a growl or grinding noise in the transfer case while the vehicle is turning or in a four wheel drive mode.
Review the
Symptoms - Transfer Case and perform the necessary inspections.
|
High/low planetary carrier assembly
|
- Inspect the high/low planetary carrier pinion gears for the following conditions:
• | Chipped, bent or deformed teeth |
• | Pinion gear needle bearings worn |
• | Pinion gear thrust washers missing |
• | Seized or binding pinion gears |
- Replace the high/low planetary carrier assembly if any of the above conditions exist. Refer to
Transfer Case Disassemble and
Transfer Case Assemble.
|
Annulus gear
|
- Inspect the annulus gear for teeth damage or wear. Refer to
Transfer Case Cleaning and Inspection.
- Replace the front case half if the annulus gear is faulty. Refer to
Transfer Case Disassemble and
Transfer Case Assemble.
|
Input gear
|
- Inspect the input gear in the planetary carrier assembly for excessive thrust end play. Refer to
Transfer Case Cleaning and Inspection.
- Inspect the input gear teeth for the following conditions:
• | Worn or galled thrust surfaces |
- Replace the input gear if faulty. Refer to
Transfer Case Disassemble and
Transfer Case Assemble.
|
Thrust washers
|
- Inspect the thrust washers for being broken or missing.
- Inspect the thrust washers for galling.
- Replace the thrust washers if faulty and the mating component if damaged. Refer to
Transfer Case Disassemble and
Transfer Case Assemble.
|