13 53 540 Replacing, sealing fuel hoses

Recycling 

Catch and dispose of escaping fuel.

Observe country-specific waste-disposal regulations.

Version with hose clamps: 

Release hose clamps.

Remove hoses (1) and (2).

Installation: 

1. Fuel hoses and hose clamps must be replaced each time they are removed!
   Fig 1: Removing Hoses

   Courtesy of BMW OF NORTH AMERICA, INC.

Version with compressed air connection: 

Blow fuel back into tank with a short blast of compressed air (max. 3 bar) at compressed air connection (1).

Fig 2: Locating Compressed Air Blowing Point

Courtesy of BMW OF NORTH AMERICA, INC.

Version, fuel hoses without integrated unlocking facility: 

Unlock fuel hoses with special tool 16 1 050 and detach hoses.

Installation: 

1. Check O-ring in fuel hose and sealing surfaces on fuel lines for damage; replace components if necessary.
2. Coat O-ring for assembly with anti-friction agent.
   Fig 3: Detaching Fuel Hoses With Special Tool

   Courtesy of BMW OF NORTH AMERICA, INC.

Fuel hoses with integrated unlocking facility: 

Press fuel hose (1) downwards and keep pressed.

Fig 4: Pressing Fuel Hose Downwards (Fuel Hoses With Integrated Unlocking Facility)

Courtesy of BMW OF NORTH AMERICA, INC.

Press unlocking ring (2) upwards, keep pressed and detach fuel hose (1).

Installation: 

1. Check O-ring in fuel hose and sealing surfaces on fuel lines for damage; replace components if necessary.
2. Coat O-ring for assembly with anti-friction agent.
   Fig 5: Pressing Unlocking Ring Upwards And Detaching Fuel Hose

   Courtesy of BMW OF NORTH AMERICA, INC.

M43, M44: 

Cars with screw-mounted fuel feed line (2):

Follow installation instructions (1) and (2).

Installation instruction 1: 

1. Always replace fuel hose (1) and hose clamps once they have been removed.
   Fig 6: Locating Screw-Mounted Fuel Feed Line (M43, 44)

   Courtesy of BMW OF NORTH AMERICA, INC.

M43, M44: 

Installation instruction 2: 

1. Always replace O-ring. Coat O-ring with anti-friction agent.
2. Clean sealing faces of fuel feed line.
3. If necessary, replace fuel feed line.
4. For Tightening Torque, refer to 13 53 4A in FUEL SUPPLY SYSTEM - TIGHTENING TORQUES .
   Fig 7: Locating O-Ring (M43, 44)

   Courtesy of BMW OF NORTH AMERICA, INC.

Seal off fuel hoses: 

Fuel hoses with hose clamps:

Seal hoses with special tool 13 3 010.

Installation: 

1. Fuel hoses and hose clamps must be replaced each time they are removed!
   Fig 8: Sealing Hoses With Special Tool

   Courtesy of BMW OF NORTH AMERICA, INC.

Fuel hoses with quick-release couplings: 

Seal fuel hoses (1) with special tool 13 5 281.

Seal fuel lines (2) with special tool 13 5 282.

Installation: 

1. Check O-ring in fuel hose and sealing surfaces on fuel lines for damage; replace components if necessary.
2. Coat O-ring for assembly with anti-friction agent.
   Fig 9: Sealing Hoses And Fuel Lines With Special Tool

   Courtesy of BMW OF NORTH AMERICA, INC.