Removing And Installing/Replacing Pressure Line For Oscillating Motor/Rear Axle (Middle Pressure Lines)

WARNING: This page is about a different car, the 2007 BMW 550i and 2006 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT:

Adhere to the utmost cleanliness. Do not allow any dirt to enter the hydraulic system.

Seal off pipe connections with plugs.

After installation:

Fill and bleed HYDRAULIC SYSTEM
Check pipe connections for leaks
If necessary, carry out INITIAL OPERATION FOR DYNAMIC DRIVE

Necessary preliminary tasks:

Convertible/Touring: Remove rear right tension strut.
Remove RIGHT UNDERBODY PANELING
Remove right tank cover

Pressure line for oscillating motor (junction I to junction II):

Release nuts.

Tightening torque 37 14 13AZ . See 14 ELECTRICAL COMPONENTS for specs.

Disengage pressure lines from pipe holders (1).

Remove pipe holder (1).

Installation:

Replace pipe holder (1).

Make sure pressure lines are laid without tension and with sufficient spacing to adjoining components.

Tightening torque 37 14 14AZ . See 14 ELECTRICAL COMPONENTS for specs.

Fig 1: Locating Pipe Holders

Courtesy of BMW OF NORTH AMERICA, INC.

Pressure line for oscillating motor (junction II to junction III):

Release nuts.

Tightening torque 37 14 13AZ . See 14 ELECTRICAL COMPONENTS for specs.

Unscrew nut (1).

Remove pressure line.

Installation:

Replace self-locking nut.

Make sure pressure lines are laid without tension and with sufficient spacing to adjoining components.

Tightening torque 37 14 14AZ . See 14 ELECTRICAL COMPONENTS for specs.

Fig 2: Locating Nut

Courtesy of BMW OF NORTH AMERICA, INC.