Removing And Installing/Replacing Pressure Line For Oscillating Motor/Rear Axle (Rear 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.

Special tools required:

33 0 170

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:

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

Release nuts at junction III.

Tightening torque, 37 14 13AZ.

Release screws (1).

Tightening torque 37 14 14AZ.

Installation:

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

Fig 1: Locating Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Installation:

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

Insert screws (1).
Align pressure lines to rear axle carrier.
Tighten screws (1)
Tightening torque 37 14 14AZ.

Fig 2: Identifying Rear Axle Carrier Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Remove stabilizer on rear axle carrier.

Release nuts (1, 2).

Feed pressure lines at top around rear axle carrier and remove towards rear.

Installation:

Pressure lines are protected against being mixed up by different thread sizes.

Tightening torque, 37 14 18AZ.

Fig 3: Identifying Stabiliser Nuts

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IMPORTANT:

Risk of damage! Pressure lines must not have any contact with the stabilizer (minimum distance 5 mm)!

Assembly: Pressure lines to oscillating motor

NOTE:

Before the stabilizer is installed, the pressure lines must be aligned to the oscillating motor and secured using banjo bolts.

Installation:

Attach hollow nuts to oscillating motor, do not tighten down
Attach special tool 33 0 170 to pressure lines (the side of the special tool illustrated must point in the direction of the oscillating motor)
Tighten down nuts
Tightening torque 37 14 18AZ . See 14 ELECTRICAL COMPONENTS for specs.
Remove special tool

Fig 4: Identifying Special Tool (33 0 170)

Courtesy of BMW OF NORTH AMERICA, INC.