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
in Transfer Case - NVG 246-NP8
Unit Repair.
- Replace the fork pads or other damaged components. Refer to
Transfer Case Disassemble
and
Transfer Case Assemble
in Transfer Case - NVG 246-NP8
Unit Repair.
|
Faulty high/low range fork
|
- Inspect the high/low range fork for damage or wear. Refer to
Transfer Case Cleaning and Inspection
in Transfer Case -
NVG 246-NP8 Unit Repair.
- Replace the high/low range fork if faulty. Refer to
Transfer Case Disassemble
and
Transfer Case Assemble
in Transfer Case - NVG 246-NP8
Unit Repair.
|
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
in Transfer Case - NVG 246-NP8
Unit Repair.
- Replace the faulty actuator lever. Refer to
Transfer Case Disassemble
and
Transfer Case Assemble
in Transfer Case - NVG 246-NP8
Unit Repair.
|
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
in Transfer Case - NVG 246-NP8
Unit Repair.
- Replace the input gear if the engagement teeth are faulty. Refer
to
Transfer Case Disassemble
and
Transfer Case Assemble
in Transfer Case -
NVG 246-NP8 Unit Repair.
|
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
in Transfer Case - NVG 246-NP8 Unit Repair.
|
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
in Transfer Case - NVG 246-NP8
Unit Repair.
- Replace the bearing and the rear output shaft if faulty. Refer
to
Transfer Case Disassemble
and
Transfer Case Assemble
in Transfer Case -
NVG 246-NP8 Unit Repair.
|
Input gear
|
- Inspect the input gear for broken or damaged teeth. Refer to
Transfer Case Cleaning and Inspection
in Transfer Case -
NVG 246-NP8 Unit Repair.
- Replace the input gear if faulty. Refer to
Transfer Case Disassemble
and
Transfer Case Assemble
in Transfer Case - NVG 246-NP8
Unit Repair.
|