Cause
| Correction
|
DEFINITION: Loss of the transfer case drive torque during deceleration, acceleration or under load.
Review the
Symptoms - Transfer Case and perform the necessary inspections.
|
Faulty high/low range shift fork
|
- Inspect the high/low range shift fork for being damaged. Refer to
Transfer Case Cleaning and Inspection.
- Replace the shift fork, if faulty. Refer to
Transfer Case Disassemble and
Transfer Case Assemble.
|
Faulty engagement teeth on the range sleeve
|
- Inspect for the following conditions:
• | The input shaft high speed engagement teeth for wear or damage |
• | The engagement teeth on the range sleeve for wear or damage |
- Replace the range sleeve if the teeth are faulty. Refer to
Transfer Case Disassemble and
Transfer Case Assemble.
- Replace the input shaft if the input shaft engagement teeth are faulty. Refer to
Transfer Case Disassemble and
Transfer Case Assemble.
|
High/low range shift fork block and spring
|
- Inspect the high/low range shift fork spring for being faulty.
- Inspect the shift block for wear.
Refer to
Transfer Case Cleaning and Inspection.
- Replace the high/low range shift fork assembly if the spring or block are faulty. Refer to
Transfer Case Assemble.
|
High/low planetary carrier
|
- Inspect the high/low planetary carrier for the following conditions:
• | Planetary carrier low gear engagement teeth worn or damaged |
• | Cracked carrier housing |
• | Pinion gear worn or out of position |
• | Pinion gears broken or damaged teeth |
- Replace the high/low planetary carrier if any of the above conditions are found. Refer to
Transfer Case Disassemble and
Transfer Case Assemble.
|
2/4 wheel drive synchronizer
|
- Inspect the 2/4 wheel drive synchronizer sleeve for worn engagement teeth.
- Replace the synchronizer, if faulty. Refer to
Transfer Case Assemble.
|
Shift shaft detents
|
- Inspect the shift detent springs for being faulty. Refer to
Transfer Case Cleaning and Inspection.
- Inspect the detents on the shift shafts for excessive wear. Refer to
Transfer Case Cleaning and Inspection.
- Replace the detent spring, if faulty. Refer to
Transfer Case Disassemble and
Transfer Case Assemble.
- Replace the shift shaft, if faulty. Refer to
Transfer Case Disassemble and
Transfer Case Assemble.
|