F 450 4WD Super Duty V10-6.8L (2009)
Fluid - Transfer Case: Service and Repair
Transfer Case Draining and Filling
1. Remove the drain plug and drain the transfer case.
2. Install the drain plug.
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Tighten to 27 Nm (20 lb-ft).
3. NOTICE: If the correct fill procedures are not followed, a transfer case failure can result.
NOTE: The fluid level must be just below the fill plug hole.
Remove the fill plug from the rear of the transfer case and fill the transfer case with the specified automatic transmission fluid.
4. Tighten the fill plug to specification.
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Tighten to 27 Nm (20 lb-ft).