Transfer Case Growl or Grinding Noise
WARNING: This page is about a different variant/trim than selected.
Transfer Case Growl or Grinding Noise
| 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. |
| Planetary differential |
- Inspect the planetary differential pinion gears for the following conditions:
- Inspect the planetary differential for deformation. Refer to CLEANING AND INSPECTION
in Transfer Case - Overhaul - BW 4476/79 - STS.
- Replace the planetary differential assembly if faulty. Refer to TRANSFER CASE DISASSEMBLE
and TRANSFER CASE ASSEMBLE
in Transfer Case - Overhaul - BW 4476/79 - STS.
|
| Sun gears |
- Inspect the sun gears for the following conditions:
- Replace the sun gears if faulty. Refer to TRANSFER CASE DISASSEMBLE
and TRANSFER CASE ASSEMBLE
in Transfer Case - Overhaul - BW 4476/79 - STS.
|
| Thrust washer |
- Inspect the thrust washer for seizure to the planetary differential.
- Inspect the thrust washer for galling.
- Replace the thrust washer if faulty and the mating component if damaged. Refer to TRANSFER CASE DISASSEMBLE
and TRANSFER CASE ASSEMBLE
in Transfer Case - Overhaul - BW 4476/79 - STS.
|
| Planetary differential not timed properly |
- Inspect the planetary differential for being timed properly. Refer to TRANSFER CASE ASSEMBLE
in Transfer Case - Overhaul - BW 4476/79 - STS.
- Properly time the planetary differential gears. Refer to TRANSFER CASE ASSEMBLE
in Transfer Case - Overhaul - BW 4476/79 - STS.
|