Cause
| Correction
|
Inspect for the proper transaxle and gear oil levels prior to performing system diagnosis. Refer to Transfer Case Fluid Replacement .
|
Low gear oil level
| Inspect the transfer case for leaks, repair as required. Refer to Transfer Case Leak Diagnosis and Adhesives, Fluids, Lubricants, and Sealers .
|
Incorrect gear oil in the transfer case
| Replace the gear oil. Refer to Adhesives, Fluids, Lubricants, and Sealers .
|
Water or contamination within the lubricant
| Replace the lubricant and flush the transfer case of the contaminated fluid.
|
Loose propeller shaft mounting bolts
| Inspect the bolts and replace and tighten, as required. Refer to Propeller Shaft Replacement .
|
Worn propeller shaft constant velocity joints
| Replace propeller shaft assembly. Refer to Propeller Shaft Replacement .
|
Worn axle shaft constant velocity joints
| Replace the constant velocity joints, as required.
|
Worn bearing in the differential assembly
| Repair or replace the assembly.
|
Bearing noise within the transfer case
| • | A grinding noise that occurs at a specific engine speed, regardless of transmission gear, is not within the transfer case. |
| • | A grinding noise that changes as a transmission shift occurs is not within the transfer case. |
| • | A grinding noise that changes as vehicle speed changes may be also caused by worn wheel bearings. |
| • | A grinding noise that changes as the vehicle turns may also be caused by worn wheel bearings and/or tires. |
|
- Inspect for the proper fluid level. Fill, as required.
- Identity the location of the noise using the CH-39570 Chassis Ears .
- If the noise continues, repair or replace the internal components, as required.
|
Gear set whine noise within the transfer case
| • | A whine noise that occurs at a specific engine speed, regardless of transmission gear, is not within the transfer case. |
| • | A whine noise that changes as a transmission shift occurs is not within the transfer case. |
| • | A whine noise that changes as vehicle speed changes may be also caused by worn wheel bearings. |
| • | A whine noise that changes as the vehicle turns may also be caused by worn wheel bearings and/or tyres. |
|
- Inspect for the proper fluid level. Fill, as required.
- Identity the location of the noise using the CH-39570 Chassis Ears .
- If the noise continues, repair or replace the internal components, as required.
|
