37 11 020 Replacing pressure relief valves for active anti-roll bar at front

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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).
Remove defective pressure relief valves only immediately before installing new pressure relief valves.

NOTE: Replace pressure relief valves in pairs only.
When returning pressure relief valves in warranty cases, seal them with the sealing caps from the new pressure relief valves.

Necessary preliminary tasks

Remove FRONT UNDERBODY PROTECTION
Remove stiffening plate (F12 only)
Loosen and lower the ANTI-ROLL BAR on the front axle support (all-wheel drive vehicle only)

IMPORTANT: Before releasing, it is essential to remove corrosion and dirt from the area around the pressure relief valves!

NOTE: Pressure relief valve consists of filter cartridge (1) and fitting (2).

Unclip filter cartridge (1) and release fitting (2).

Fig 1: Identifying Filter Cartridge And Fitting

Courtesy of BMW OF NORTH AMERICA, INC.

Tightening torque 37 11 2AZ .

Installation note:

Install first fitting (2) and then filter cartridge (1).

Remove both protective caps (of red rubber with tensioning strap).

After installation

Fill and bleed HYDRAULIC SYSTEM
Check newly installed pressure relief valves for tightness
Start up DYNAMIC DRIVE .