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 
• Partially remove right underbody panelling  See 51 47 ... REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT UNDERBODY PANELING

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

Tightening torque 37 14 12AZ  . See 37 14 ELECTRIC COMPONENTS

Release nut (3) (return line)

Tightening torque 37 14 19AZ  . See 37 14 ELECTRIC COMPONENTS

Release nut (4) (pressure line)

Tightening torque 37 14 16AZ  . See 37 14 ELECTRIC COMPONENTS

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

Tightening torque 37 14 15AZ  . See 37 14 ELECTRIC COMPONENTS

Installation: 

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

Fig 1: Identifying Special Tool (36 1 020)

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connections (1, 2).

Remove grounding strap (3) from valve block.

Release screws (4).

Tightening torque 37 14 17AZ  . See 37 14 ELECTRIC COMPONENTS

Raise valve block and remove towards front.

Fig 2: Identifying Valve Block

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect all plug connections (1) on valve block.

Unclip wiring set from valve block.

Fig 3: Identifying Plug Connections On Valve Block

Courtesy of BMW OF NORTH AMERICA, INC.

After installation: 

• Fill and bleed hydraulic system  See 32 13 006 BLEEDING POWER STEERING (VERSION WITH DYNAMIC DRIVE)
• 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