Fluid - Transfer Case: Service and Repair

Power Transfer Unit (PTU) Draining and Filling





NOTE: A new PTU must be installed any time the PTU has been submerged in water.

NOTE: The PTU is not to be drained unless a leak is suspected. To drain the PTU fluid, the PTU must be removed from the vehicle. The fluid that is drained may appear black and have a pungent odor. Do not mistake this for contaminated fluid.

NOTE: Fill level checks are done in-vehicle only. Let the vehicle sit 10 minutes after the road test before checking the fluid level.

1. With the vehicle in NEUTRAL, position it on a hoist.
2. Clean the area around the fill plug before removing.
3. Remove and discard the fill plug.





4. With the vehicle on a flat level surface, fill the PTU with lubricant. The fluid level must be even with the bottom of the fill opening.
^ Fluid capacity is 473 ml (16 oz).
5. Install a new fill plug.
^ Tighten to 20 Nm (15 lb-ft).