27 00... Replenishing / changing transfer case oil (ATC 350)

WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2015 BMW Alpina B7L xDrive, 2015 BMW Alpina B7 xDrive, 2015 BMW 750i xDrive, 2015 BMW 750Li xDrive, and 2014 BMW Alpina B7L xDrive. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Use only the APPROVED OIL .
Failure to comply with this requirement will result in serious damage to the transfer case!

NOTE: Only change oil when transfer case is at normal operating temperature.

Necessary preliminary tasks:

Remove TRANSMISSION CROSS-MEMBER .

Checking/correcting transfer case oil level:

Undo oil filler plug (1).

Check transfer case oil level.

If necessary, pour in transmission oil up to lower edge of opening for oil filler plug (1).

Installation note:

Tightening torque 27 10 2AZ .

Replace oil filler plug (1).

Fig 1: Identifying Oil Filler Plug

Courtesy of BMW OF NORTH AMERICA, INC.

Changing transfer case oil:

Remove exhaust system holder from transmission.

Tightening torque 18 20 1AZ .

Place oil collecting apparatus underneath.

Remove oil drain plug (1).

Drain and dispose of transmission oil.

NOTE: Observe country-specific waste disposal regulations

Installation note:

Replace oil drain plug (1).

Fig 2: Identifying Oil Drain Plug

Courtesy of BMW OF NORTH AMERICA, INC.

Tightening torque 27 10 2AZ .

Undo oil filler plug (1).

Pour in transmission oil up to lower edge of opening for oil filler plug (1).

Tightening torque 27 10 2AZ .

Replace oil filler plug (1).

Fig 3: Identifying Oil Filler Plug

Courtesy of BMW OF NORTH AMERICA, INC.