16 11 120 Removing and installing / replacing expansion tank for tank ventilation

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2005 BMW 745i, 2005 BMW 745Li, 2004 BMW 745i, 2004 BMW 745Li, and 2003 BMW 745i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove rear right wheel. Refer to 36 10 300 REMOVING OR INSTALLING FRONT OR REAR WHEEL .

Observe safety instructions on raising the vehicle. Refer to 00..... LIFTING VEHICLE WITH A LIFTING PLATFORM .

Remove rear right wheel arch trim. See 51 71... REMOVING AND INSTALLING/REPLACING FRONT BOTTOM RIGHT WHEEL ARCH TRIM

Fig 1: Removing Rear Right Wheel Arch Trim

G03289894

Courtesy of BMW OF NORTH AMERICA, INC.

Release hose clamps (1-3) and detach lines from expansion tank:

Fig 2: Disconnecting Hose Clamps

G03289895

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Replace hose clamps.

Detach rubber hose (1) from connection (2).

Fig 3: Detaching Line From Expansion Tank

G03289896

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten hose clip (3).

Detach line (4) from expansion tank.

Installation:

Replace hose clamps.

Unscrew nuts (1).

Fig 4: Identifying Expansion Tank With Carbon Canister

G03289897

Courtesy of BMW OF NORTH AMERICA, INC.

Lower expansion tank (2) with carbon canister (3).

Installation:

Make sure expansion tank is correctly seated in rubber mounts (4).

Tightening torque 16 13 1AZ. Refer to FUEL SUPPLY SYSTEM - TIGHTENING TORQUES .