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

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





Special tools required:
^ 13 3 010
^ 32 1 270





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 memory entry, with the defective part. In addition, the valve block openings must be sealed with the protective caps (of the new part).





Necessary preliminary tasks:
^ Partially remove front right wheel arch cover (rear section)
^ Remove right underbody panelling





Disconnect return line with special tool 13 3 010.

Removing valve block on front right underbody:





Release control lines (1) to RA oscillating motor on valve block.

Release control lines (2) to FA oscillating 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





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





Disconnect plugs (1) and (2).

Unclip wiring harness.





Release screws (1) and remove valve block.

Tightening torque 37 14 7AZ.





Important!
When assembling, make sure that in succession only the sealing 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 leaks
^ If necessary, carry out initial Dynamic Drive operation

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