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Home >> Mini >> 2010 >> Cooper S, 2D Hatchback, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2710 (Fuel Supply System - Repair - E90 (N51)) >> 1611 Fuel Tank With Mounting >> 1611030 Removing and installing/replacing fuel tank (US vehicles with N51 engines) >> Necessary preliminary tasks

Necessary preliminary tasks

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Release screws (1) and remove cover (2) from left and right sides of fuel tank.

Fig 1: Identifying Release Screws And Cover
G04725754Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection (1).

Unlock quick-release fastener and detach vent line (2).

Fig 2: Identifying Plug Connection And Vent Line
G05758866Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect lower fuel feed line at union nut (1).

IMPORTANT: Always grip hexagon head (2) when releasing and retightening union nut (1).
Ensure that sealing faces are clean.

Installation: 

Tightening torque 16 12 3AZ .

Fig 3: Identifying Hexagon Head And Union Nut
G05758867Courtesy of BMW OF NORTH AMERICA, INC.

Release hose clip (1) completely and remove clamping ring.

Installation: 

Make sure that filler pipe with clamping ring is installed in correct position. 

Indentation (2) on clamping ring must line up with raised section (3) of tank.

Pin (4) of filler pipe must line up with indentation on clamping ring.

Hose clip (1) must always be replaced.

Tightening torque 16 11 3AZ .

Fig 4: Identifying Hose Clip And Pin
G05758875Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Seal (1) must be replaced.

Attach new seal (1) during installation to filler pipe.

Fig 5: Identifying Seal
G05758869Courtesy of BMW OF NORTH AMERICA, INC.

Heavily support the fuel tank.

Fig 6: Identifying Fuel Tank With Support
G04725759Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten nut.

Installation: 

Replace self-locking nut.

Tightening torque, 16 11 1AZ .

Fig 7: Replacing Self Locking Nut
G04725760Courtesy of BMW OF NORTH AMERICA, INC.

Release screws for tightening straps on left and right and remove tightening straps.

Installation: 

Tightening torque 16 11 2AZ .

IMPORTANT: Carefully feed the vent line through the body when lowering the fuel tank.
Fig 8: Releasing Screws And Remove Tightening Straps
G04725761Courtesy of BMW OF NORTH AMERICA, INC.