27 10 070 Replacing output flange on rear transfer box (ATC 35L)

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NOTE:

Replace output flange only together with a new radial shaft seal.
Procedure for removing output flange is identical to replacing RADIAL SHAFT SEAL .

Installation note:

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

Determine and note down dimension A of output flange (old and new).

Fig 1: Measuring Dimension A Of Output Flange

Courtesy of BMW OF NORTH AMERICA, INC.

Determine and note down dimension B of output flange (old and new).

Fig 2: Measuring Dimension B Of Output Flange

Courtesy of BMW OF NORTH AMERICA, INC.

Determine old dimension C, thickness of shim.

Fig 3: Measuring Shim Thickness

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Calculate thickness of new shim:

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