27 10 070 Replacing output flange on transfer box at rear (ATC700)

WARNING: This page is about a different car, the 2011 BMW X6 and 2010 BMW X6. 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 approved oil for this transfer box: Transfer-box oil TF0870, BMW part number 83 22 0 397 244 (1-litre can)

NOTE:

Operations for removing output flange are 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: Identifying Output Flange Dimension A

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 2: Identifying Output Flange Dimension B

Courtesy of BMW OF NORTH AMERICA, INC.

Determine old dimension C, thickness of shim.

Fig 3: Identifying Shim Thickness Dimension C

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.