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11 40 000 Checking engine oil pressure: Notes

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Special tools required 

WARNING: Risk of scalding!
NOTE: To check the engine oil pressure, remove the oil pressure switch and install and connect the special tool.
NOTE: A small amount of engine oil emerges when the oil pressure switch is removed.

Have a cleaning cloth ready. 

Necessary preliminary tasks: 

Special tool 11 4 050 is equipped with a sealing ring (1).

IMPORTANT: Tightening torque of special tool 11 4 050 max. 20 Nm.
Fig 1: Identifying Sealing Ring And Special Tool (11 4 050)
G04740314Courtesy of BMW OF NORTH AMERICA, INC.

Screw special tool 11 4 050 into crankcase to max. 20 Nm.

Secure union nut (1) of special tool 13 3 063 to max. 15 Nm.

Fig 2: Screwing Special Tool (11 4 050) Into Crankcase
G06178724Courtesy of BMW OF NORTH AMERICA, INC.