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How-to » Transmissions & Drivetrains » 4WD & All Wheel Drive » How to Check and Replace Transfer Case Fluid
 Note: This is a general guide for all vehicles.

How to Check and Replace Transfer Case Fluid

PARTS
  • Gear Oil
TOOLS
STEPS
Edit
Moderate
This guide requires the following supplies:
  • Transmission Fluid Pump

Safety Tip:
Always wear safety glasses when working on your vehicle. Wear other personal protective equipment (PPE) when necessary, for example latex gloves or closed toe shoes.

1
Secure the vehicle on a level surface.
2
Locate the oil fill plug on the transfer case.
3
Remove the top oil fill plug.
4
Using a flashlight, check for oil at the fill plug hole. When full, the oil should be just below the top hole.
5
With the top oil fill plug still out, remove the bottom oil drain plug to drain the oil into an oil drain pan.
6
Inspect transfer case oil for metal flakes when in the oil drain pan.
7
Thread the oil drain plug back into the transfer case (lower plug hole) and torque to manufacturer's specifications.
8
Fill the transfer case with the manufacturer's recommended oil until it begins to flow from the fill plug hole.
9
Thread the oil fill plug back into the transfer case.
10
Torque the oil fill plug to 30 ft. lbs.
11
Check for transfer case leaks.
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