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.
|
High/low shift fork pads
|
- Inspect the shift fork pads for wear. Refer to
Transfer Case Cleaning and Inspection.
- Replace the fork pads or other damaged components. Refer to
Transfer Case Disassemble and
Transfer Case Assemble.
|
Faulty high/low range fork
|
- Inspect the high/low range fork for damage or wear. Refer to
Transfer Case Cleaning and Inspection.
- Replace the high/low range fork if faulty. Refer to
Transfer Case Disassemble and
Transfer Case Assemble.
|
Actuator lever worn
|
- Inspect for excessive wear on the actuator lever - for not allowing full shift fork travel. Refer to
Transfer Case Cleaning and Inspection.
- Replace the faulty actuator lever. Refer to
Transfer Case Disassemble and
Transfer Case Assemble.
|
Faulty high speed teeth on range sleeve
|
- Inspect for the following conditions:
| • | The input gear 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 gear if the engagement teeth are faulty. Refer to
Transfer Case Disassemble and
Transfer Case Assemble.
|
High/low planetary carrier
|
- Inspect for the following conditions of the high/low planetary carrier:
| • | Low speed engagement teeth worn or damaged |
| • | Cracked carrier housing |
| • | Pinion gear bushings 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.
|
Input shaft pilot bearing
|
- Inspect the bearing in the input gear and the rear output shaft journal for excessive wear. Refer to
Transfer Case Cleaning and Inspection.
- Replace the bearing and the rear output shaft if faulty. Refer to
Transfer Case Disassemble and
Transfer Case Assemble.
|
Input gear
|
- Inspect the input gear for broken or damaged teeth. Refer to
Transfer Case Cleaning and Inspection.
- Replace the input gear if faulty. Refer to
Transfer Case Disassemble and
Transfer Case Assemble.
|
