27 10 070 Replacing output flange on transfer box at rear (ATC350)

WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: After completing work, check TRANSMISSION OIL LEVEL and top up if necessary.
Use only the APPROVED OIL .

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.