Removing and Installing/Replacing DYNAMIC DRIVE Valve Block

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





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).





Warning!
Danger of poisoning 00 .. ... Danger of Poisoning If Oil Is Ingested/Absorbed Through the Skin if oil is ingested/absorbed through the skin!
Risk of injury 00 .. ... Risk of Injury If Oil Comes Into Contact With Eyes and Skin 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 Removing and Installing/Replacing Front Bottom Right Wheel Arch Trim
- Partially remove right underbody panelling Removing and Installing/Replacing Left or Right Underbody Panelling





Hydraulic lines and connections on valve block must be fitted with suitable sealing plugs immediately after removal!





Release nuts (1, 2) (pressure lines to rear axle oscillating motor).
Tightening torque 37 14 12AZ Electric Components.
Release nut (3) (return line)
Tightening torque 37 14 19AZ Electric Components.
Release nut (4) (pressure line)
Tightening torque 37 14 16AZ Electric Components.
Release nuts (5, 6) (pressure lines to front axle oscillating motor).
Tightening torque 37 14 15AZ Electric Components.





Partially detach front right wheel arch trim Service and Repair.
Disconnect plug connections (1, 2).
Release screws (3).
Tightening torque 37 14 17AZ Electric Components.
Raise valve block and remove towards front.

Installation:
Make sure hydraulic lines are laid without tension and with sufficient spacing to adjoining components.
When assembling, make sure that only the sealing plugs of the line to be fitted are removed.
Do not damage sealing surfaces of hydraulic lines.





After installation:
- Fill and bleed hydraulic system Bleeding Power Steering (Version with Dynamic Drive)
- Check pipe connections for leaks
- If necessary, carry out initial Dynamic Drive operation Initial Inspection and Diagnostic Overview