2710070 Replacing output flange on transfer case at rear (ATC300)

WARNING: This page is about a different car, the 2011 BMW 328xi, 2010 BMW 335xi, 2010 BMW 328xi, 2009 BMW 335xi, and 2009 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: After completing work, check GEAR OIL LEVEL and top up if necessary.
Use only the approved gear oil in the transfer case. See TRANSFER BOX - OPERATING FLUIDS .

NOTE:

Operations for removing output flange are identical to replacing RADIAL SHAFT SEAL

Installation:

Thickness of new shim must be determined before output flange is installed

Determine and note down measurement A of output flange (previous and new).

Fig 1: Identifying Measurement A Of Output Flange

Courtesy of BMW OF NORTH AMERICA, INC.

Determine and note down measurement B of output flange (previous and new).

Fig 2: Identifying Measurement B Of Output Flange

Courtesy of BMW OF NORTH AMERICA, INC.

Determine measurement C, thickness of shim.

Fig 3: Identifying Thickness Of Shim

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Calculate thickness of new shim:

Add measurement A of output flange (previous) and measurement C of shim (previous)
Then subtract measurement B (previous) from result A+C (previous)
Subtract measurement B from measurement A of output flange (new)
Then subtract result of step 2 from result of step 1.