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

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

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

Necessary preliminary tasks:

Remove TRANSMISSION CROSSMEMBER .

Checking/correcting transfer case oil level:

Undo oil filler plug (1).

Check transfer box 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 box 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

Fig 2: Identifying Oil Drain Plug

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Replace oil drain plug (1).

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.