Removing And Installing/Replacing Pressure Lines For Oscillating Motor/Front Axle (Front 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:

Remove REAR ASSEMBLY UNDERSIDE PROTECTION
Remove right steering gear cover

Release nuts at junction I.

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

Fig 1: Locating Rear Pressure Line Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Release front right wheel arch trim in area of pressure lines.

Release screw.

Disengage pressure lines from pipe holder.

Remove pipe holder from front axle carrier.

Installation:

Replace pipe holder.

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 Pipe Holder Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw.

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

Fig 3: Locating Rubber Mount Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Press lower hose holder section downwards.

Installation:

Make sure pressure lines (1, 2) are laid without tension and with sufficient spacing to adjoining components.

Fig 4: Pressing Lower Hose Holder Section Downwards

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT:

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

Mark installation position of pressure lines to oscillating motor.

Release nuts (1).

Remove pressure lines from oscillating motor.

Installation:

Carry over identification to new component.

Pressure lines are protected against being mixed up by different thread diameters on the oscillating motor connection.

Tightening torque 37 14 18AZ . See 14 ELECTRICAL COMPONENTS for specs.

Fig 5: Identifying Oscillating Motor Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Feed pressure lines (1, 2) in direction of arrow out of front axle carrier.

Installation:

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

Fig 6: Locating Pressure Line Feed

Courtesy of BMW OF NORTH AMERICA, INC.