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

WARNING: This page is about a different car, the 2013 BMW 550i GT, 2012 BMW 550i GT, 2011 BMW 550i GT, and 2010 BMW 550i GT. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

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.
Do not draw off hydraulic fluid (risk of contamination).

NOTE: In all warranty cases you must always provide a fault memory printout, even where there is no fault entry, with the defective component. In addition, the valve block openings must be sealed with the protective caps (of the new part).

Necessary preliminary work

Partially remove FRONT RIGHT WHEEL ARCH COVER (REAR SECTION) .
Remove RIGHT UNDERBODY PANELLING .

Disconnect return line with special tool 13 3 010 .

Fig 1: Disconnecting Dynamic Drive Valve Block Return Line Using Special Tool (13 3 010)

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Remove valve block on front right vehicle underbody

Release control lines (1) to rear axle swivel motor on valve block.

Release control lines (2) to FA swivel motor on valve block.

Release supply and return lines (3) to valve block.

Allow hydraulic fluid to drain off through opened connections and dispose of properly.

Tightening torque 37 13 1AZ - 3AZ

Fig 2: Identifying Tie Lines Mounting Screws

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IMPORTANT: Hydraulic line and connection on valve block must be fitted with suitable seal plugs immediately after removal! 32 1 270

Disconnect plug connections (1) and (2).

Fig 3: Identifying Plug Connections

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Unclip wiring harness.

Release screws (1) and remove valve block.

Tightening torque 37 14 7AZ .

Fig 4: Identifying Valve Block Mounting Screws

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IMPORTANT: When assembling, make sure that in succession only the seal plugs of the line to be fitted are removed.

When fitting lines, do not tilt connectors (sealing rings!) and connect fully before screwing.

Do not replace sealing rings on hydraulic lines.

Replace affected line if sealing ring is damaged.

Check seating and position of holders and line clips, correcting if necessary.

After installation

Fill and bleed HYDRAULIC SYSTEM .
Check line connections for tightness
If necessary, carry out INITIAL DYNAMIC DRIVE OPERATION .