Cause
| Correction
|
DEFINITION: During acceleration or deceleration, a clunk is heard or felt in the transfer case.
Review the
Symptoms - Transfer Case
and perform the necessary inspections.
|
Incorrect fluid level or incorrect fluid
|
- Inspect the transfer case for the correct fluid level. Refer to
Transfer Case Fluid Replacement
.
- Inspect the transfer case for the correct type of fluid.
- Flush the transfer case and fill with the correct fluid, if required.
|
Excessive clearance between the slip yoke and the rear output shaft
|
- Inspect for the following conditions:
• | Worn rear output shaft splines |
- Repair or replace the following components, if faulty:
- Replace the slip yoke. Refer to
One-Piece Propeller Shaft Replacement
and
Two-Piece Propeller Shaft Replacement
in Propeller Shaft.
- Replace the rear output shaft. Refer to
Transfer Case Disassemble
and
Transfer Case Assemble
in Transfer Case - NVG 263-NP1
Unit Repair.
|
Excessive clearance between the slip yoke and the rear bushing
|
- Inspect for the following conditions:
• | Worn slip yoke bushing journal |
- Replace the slip yoke, if required. Refer to
One-Piece Propeller Shaft Replacement
or
Two-Piece Propeller Shaft Replacement
in Propeller Shaft.
- Replace the rear bushing if worn. Refer to
Rear Output Shaft Seal Replacement
.
|
Input gear thrust washers
|
- Inspect for worn or missing input gear thrust washers. Refer to
Transfer Case Cleaning and Inspection
in Transfer
Case - NVG 263-NP1 Unit Repair.
- Replace the thrust washers as required. Refer to
Transfer Case Disassemble
and
Transfer Case Assemble
in Transfer Case - NVG 263-NP1
Unit Repair.
|
Worn high speed teeth on the range sleeve
|
- Inspect for worn high speed teeth on the range sleeve. Refer to
Transfer Case Cleaning and Inspection
in Transfer
Case - NVG 263-NP1 Unit Repair.
- Replace the range sleeve if worn. Refer to
Transfer Case Disassemble
and
Transfer Case Assemble
in Transfer Case - NVG 263-NP1
Unit Repair.
|
Rear output shaft bearing outer retaining ring
|
- Inspect for the following conditions:
• | Proper installation of the rear output shaft bearing retaining
ring |
• | Excessive wear or damaged retaining ring groove in the rear case
half |
- Repair or replace the following components if found faulty:
• | Properly install a new rear output shaft bearing outer retaining
ring. |
|