37 13 110 Removing And Installing/Replacing Pressure Line For Oscillating Motor/Rear Axle

After installation:

• Fill and bleed hydraulic system  . See 34 00 050 BLEEDING BRAKE SYSTEM WITH DSC .
• Check pipe connections for leaks
• If necessary, carry out initial operation for Dynamic Drive  . See 37 10 001 INITIAL OPERATION WITH TEST RUN OF DYNAMIC DRIVE .

Necessary preliminary tasks: 

• Remove bottom right wheel arch trim  . See 51 71 ... REMOVING AND INSTALLING/REPLACING FRONT BOTTOM RIGHT WHEEL ARCH TRIM .
• Remove right underbody paneling  . See 51 47 ... REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT UNDERBODY PANELING .
• Remove rear right wheel arch trim

Release nuts on valve block.

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

Release nuts at junction I.

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

Disconnect pressure lines (1, 2).

Installation: 

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

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

Fig 1: Identifying Pressure Lines

Courtesy of BMW OF NORTH AMERICA, INC.

Remove pipe holder from underbody of vehicle.

Installation: 

Replace pipe holder.

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

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

Fig 2: Locating Pipe Holder From Underbody Of Vehicle

Courtesy of BMW OF NORTH AMERICA, INC.

Release nuts at junction II.

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

Remove pipe holder (1) from tension strut.

Installation: 

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

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

Fig 3: Identifying Pipe Holder

Courtesy of BMW OF NORTH AMERICA, INC.

Release nuts at junction III.

Disconnect pressure lines (1, 2).

Installation: 

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

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

Fig 4: Identifying Pressure Lines

Courtesy of BMW OF NORTH AMERICA, INC.

Remove right output shaft  . See 33 21 002 REMOVING AND INSTALLING / REPLACING RIGHT OUTPUT SHAFT .

Remove complete rear axle carrier  . See 33 31 000 REMOVING AND INSTALLING COMPLETE REAR AXLE CARRIER .

Release screws (1).

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

Remove pipe holder (2) from rear axle carrier.

Installation: 

Replace pipe holder (2).

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

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

Fig 5: Identifying Pipe Holder And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release nuts on oscillating motor.

Remove pressure lines from oscillating motor.

Installation: 

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

Tightening torque. See FRONT AXLE - TIGHTENING TORQUES -- ALPINA .

Fig 6: Locating Oscillating Motor Pressure Lines

Courtesy of BMW OF NORTH AMERICA, INC.