Transfer Case Clunk in 4LO. Isuzu Ascender

For 1990-2009 cars only

Makes 🢒 Isuzu 🢒 2003 🢒 Ascender - 4WD 🢒 Driveline/Axle 🢒 Transfer Case - NVG 226-NP8 🢒 Transfer Case Clunk in 4LO

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 .

•	Fill the transfer case to the correct fluid level, if required.

•	Inspect the transfer case for the correct type of fluid.

•	Flush the transfer case and fill with the correct fluid, if required.

Worn planetary gears

Inspect for excessive worn planetary gears. Refer to Transfer Case Cleaning and Inspection .