11 41 115 Removing and installing/replacing hydraulic valve (N52K)

WARNING: This page is about a different car, the 2011 BMW Z4, 2010 BMW Z4, and 2009 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Aluminium-magnesium materials.
No steel screws/bolts may be used due to the threat of electrochemical corrosion.
A magnesium crankcase requires aluminum screws/bolts exclusively.
Aluminum screws/bolts must be replaced each time they are released .
Aluminum screws/bolts are permitted with and without color coding (blue).
For reliable identification:
Aluminum screws/bolts are not magnetic .
Jointing torque and angle of rotation must be observed without fail (risk of damage) .

Necessary preliminary tasks:

Remove front UNDERBODY PROTECTION
Have a cleaning cloth ready to catch escaping oil

Detach plug (1) from hydraulic valve (2).

Fig 1: Identifying Hydraulic Valve And Plug

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1) and remove hydraulic valve (2).

Fig 2: Identifying Hydraulic Valve Mounting Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Replace O-ring (1).

Fig 3: Identifying O-Ring

Courtesy of BMW OF NORTH AMERICA, INC.