1353332 Removing and installing/replacing feed line (N63): Recycling

WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2015 BMW Alpina B7L, 2015 BMW Alpina B7, 2014 BMW Alpina B7L, 2014 BMW Alpina B7, and 2013 BMW Alpina. However, it is still accessible from the selected car via links, so may be relevant.

Fuel escapes when fuel lines are detached.

Catch and dispose of escaping fuel in a suitable container.

Observe country-specific waste-disposal regulations.

Release clamps (1) and (2).

Replace clamps (2).

Detach both charge-air ducts (3) and remove.

Check gaskets on turbocharger, replacing if necessary.

Fig 1: Identifying Air-Ducts With Clamps

Courtesy of BMW OF NORTH AMERICA, INC.

Picture shows the left side, the procedure for the right side is identical.

Detach hoses (1) from clean-air pipe.

Release screw (2).

Tightening torque 13 71 1AZ .

Detach clean-air pipe (3) in direction of travel from turbocharger.

Check seal on clean-air pipe, replacing if necessary.

Fig 2: Identifying Clean Air Pipe With Hoses And Mounting Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock and disconnect fuel feed line (1).

Seal fuel lines with special tools 13 5 160 and 13 5 162.

Unlock and disconnect plug (2) on fuel low-pressure sensor.

Release fuel feed line (3) on high-pressure pump.

Tightening torque 13 53 4AZ .

Release bolts (4).

Tightening torque 13 53 6AZ .

Catch and dispose of escaping fuel.

Fig 3: Identifying Fuel Feed Line With Plug And Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

Seal fuel lines with special tools (1) 13 5 160 and (2) 13 5 162.

Fig 4: Sealing Fuel Lines Using Special Tools (13 5 160)

Courtesy of BMW OF NORTH AMERICA, INC.

Release fuel feed line (1) on high-pressure pump.

Tightening torque 13 53 4AZ .

Catch and dispose of escaping fuel.

Fig 5: Identifying Fuel Feed Line On High-Pressure Pump

Courtesy of BMW OF NORTH AMERICA, INC.

Release nuts (1) on retaining clips.

Tightening torque 13 53 7AZ .

Feed out and remove fuel feed line (2).

Fig 6: Identifying Fuel Feed Line With Mounting Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Observe tightening sequence.

Fit fuel feed line.
In so doing, tighten screw connections hand-tight only.
Tighten down fuel feed line (1) on high-pressure pumps to torque (2) and with crowfoot wrench (3).
Tightening torque 13 53 4AZ .
Tighten down lugs on fuel low-pressure sensor.
Tightening torque 13 53 6AZ .
Tighten down retaining clips.
Tightening torque 13 53 7AZ .

Fig 7: Tightening Fuel Feed Line Using Crowfoot Wrench
Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check fuel system for leaks.

Check function of DME.