37 13 ... Notes On Fitting A New Pipe Or A Screw Connection

WARNING: This page is about a different car, the 2008 BMW Alpina and 2007 BMW Alpina. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Do not kink, twist or crush lines.
Do not disassemble screw connection!

Fitting new screw connection:

Insert complete new screw connection consisting of toothed ring (1), banjo bolt (2) and assembly plug (3) into air spring strut/pipe (air spring to air reservoir)/pipe connection of air supply unit.

Tightening torque. See INTEGRATED SUSPENSION SYSTEMS - TIGHTENING TORQUES -- ALPINA .

Remove assembly plug (3).

Fig 1: Identifying Toothed Ring, Banjo Bolt And Assembly Plug

Courtesy of BMW OF NORTH AMERICA, INC.

Slide new pipe (1) into banjo bolt (2) up to marking.

Check installation position of pipe (1) by pulling back slightly.

NOTE: The toothed ring (3) has engaged correctly when the pipe (1) cannot be pulled back.

Fig 2: Identifying Pipe, Banjo Bolt And Toothed Ring

Courtesy of BMW OF NORTH AMERICA, INC.

Fitting new pipes:

IMPORTANT: To avoid leaks in the air spring system, it is essential to avoid scratches on pipes in particular in the connection area!

Pipes are partly integrated in wiring harness.

When faulty pipes are replaced, they must be disconnected at the feed-in to the wiring harness (remaining piece remains incorporated in wiring harness).

Secure new pipes along wiring harness with cable straps.