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.
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 bearing worn |
| • | Pinion gear thrust washers missing |
| • | Seized or binding pinion gears |
- Inspect the high/low planetary carrier input gear for excessive thrust end play.
- Inspect the input gear teeth for excessive wear or damage.
- Replace the high/low planetary carrier assembly if any of the above conditions exist. Refer to
Transfer Case Disassemble
and
Transfer Case Assemble
.
|
Ring gear
|
- Inspect the ring gear for teeth damage or wear. Refer to
Transfer Case Cleaning and Inspection
.
- Replace the ring gear if it is faulty. Refer to
Transfer Case Disassemble
and
Transfer Case Assemble
.
|
Planetary differential
|
- Inspect the planetary differential pinion gears for the following conditions:
| • | Chipped, bent or deformed teeth |
| • | Pinion gear bushings worn |
| • | Pinion gear thrust washers missing |
| • | Seized or binding pinion gears |
- Inspect the planetary differential for deformation. Refer to
Transfer Case Cleaning and Inspection
.
- Replace the planetary differential assembly if it is faulty. Refer to
Transfer Case Disassemble
and
Transfer Case Assemble
.
|
Sun gears
|
- Inspect the sun gears for the following conditions:
| • | Worn or galled thrust surfaces |
- Replace the sun gears if they are faulty. Refer to
Transfer Case Disassemble
and
Transfer Case Assemble
.
|
Thrust washers
|
- Inspect the thrust washers for seizure to the planetary differential.
- Inspect the thrust washers for galling.
- Replace the thrust washers if they are faulty and the mating component if it is damaged. Refer to
Transfer Case Disassemble
and
Transfer Case Assemble
.
|
Planetary differential not timed properly
|
- Inspect the planetary differential for being timed properly. Refer to
Transfer Case Assemble
.
- Properly time the planetary differential gears. Refer to
Transfer Case Assemble
.
|
