37 20 001 Removing and installing/replacing DYNAMIC DRIVE valve block

WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: In a warranty case you must always provide a fault memory printout, even where there is no fault memory entry, with the defective part.

WARNING: Danger of poisoning if oil is ingested/absorbed through the skin!
Risk of injury if oil comes into contact with eyes and skin!

IMPORTANT: Adhere to the utmost cleanliness. Do not allow any dirt to enter the hydraulic system.
Close off pipe connections with plugs.

Recycling:

Catch and dispose of hydraulic fluid in a suitable container.

Observe country-specific waste-disposal regulations

Necessary preliminary tasks:

Draw off and dispose of 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 paneling . See 51 47... REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT UNDERBODY PANELLING .

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

Tightening torque 37 14 12AZ. See INTEGRATED SUSPENSION SYSTEMS - TIGHTENING TORQUES .

Release nut (3) (return line)

Tightening torque 37 14 19AZ. See INTEGRATED SUSPENSION SYSTEMS - TIGHTENING TORQUES .

Release nut (4) (pressure line)

Tightening torque 37 14 16AZ. See INTEGRATED SUSPENSION SYSTEMS - TIGHTENING TORQUES .

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

Tightening torque 37 14 15AZ. See INTEGRATED SUSPENSION SYSTEMS - TIGHTENING TORQUES .

Fig 1: Identifying Rear Axle Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

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

Partially detach front right wheel arch trim . See 51 71 040 REMOVING AND INSTALLING/REPLACING FRONT LEFT OR RIGHT WHEEL ARCH COVER .

Disconnect plug connections (1, 2).

Remove grounding strap from valve block.

Release screws (3).

Tightening torque 37 14 17AZ. See INTEGRATED SUSPENSION SYSTEMS - TIGHTENING TORQUES .

Raise valve block and remove towards front.

Fig 2: Identifying Plug Connections And Screws (1 Of 2)

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 And Screws (2 Of 2)

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.