37 20 001 Removing And Installing/Replacing Dynamic Drive Valve Block

Necessary preliminary tasks: 

• Draw off and dispose off hydraulic fluid from fluid reservoir
• Remove bottom right wheel arch trim  . See 51 71 ... REMOVING AND INSTALLING/REPLACING FRONT BOTTOM RIGHT WHEEL ARCH TRIM .
• Partially remove right underbody panelling. See .

Release nuts (1, 2) (pressure lines to rear axle oscillating motor).

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

Release nut (3) (return line)

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

Release nut (4) (pressure line)

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

Release nuts (5, 6) (pressure lines to front axle oscillating motor).

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

Installation: 

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

Fig 1: Identifying Dynamic Drive Valve Block Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connections (1, 2).

Remove grounding strap (3) from valve block.

Release screws (4).

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

Raise valve block and remove towards front.

Fig 2: Identifying Grounding Strap, Plug Connection And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect all plug connections (1) on valve block.

Unclip wiring set from valve block.

Fig 3: Identifying Valve Block Plug Connections

Courtesy of BMW OF NORTH AMERICA, INC.

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 Dynamic Drive operation  . See 37 10 001 INITIAL OPERATION WITH TEST RUN OF DYNAMIC DRIVE .