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11 40 000 Checking engine oil pressure: Notes

Special tools required: 

NOTE: For special tools, refer to ENGINE - SPECIAL TOOLS .
NOTE: For engine oil pressure to be checked, oil pressure switch must be removed and special tools must be installed and connected.

To avoid an excess discharge of oil when removing oil pressure switch:

Unscrew oil filter cap; the engine oil flows out of the oil filter housing into the oil sump.

Installation: 

Replace sealing ring.

Tightening torque, refer to 11 42 2AZ in ENGINE - TIGHTENING TORQUES

Remove oil pressure switch. See 12 61 280 REMOVING AND INSTALLING/REPLACING OIL PRESSURE SWITCH (M52TU, M54, M56)

Installation: 

Tightening torque, refer to 12 61 1AZ in ENGINE - TIGHTENING TORQUES .

Install special tool 11 4 050 with sealing ring (1) in place of oil pressure switch.

Fig 1: Installing Special Tool 11 4 050
G03164225Courtesy of BMW OF NORTH AMERICA, INC.