11 12 595 Checking a valve guide for wear (M52/S52/M52TU/M54/M56)

WARNING: This page is about a different car, the 2003 BMW 530i, 2002 BMW 530i, and 2001 BMW 530i. However, it is still accessible from the selected car via links, so may be relevant.

Valves removed, refer to 11 34 552 REMOVING AND INSTALLING OR REPLACING ALL VALVES (M52/S52/M52TU/M54/M56) .

To measure tilt clearance, install a new valve so that end of valve stem is flush with valve guide.

Attach dial gauge and measure tilt clearance.

Fig 1: Measuring Tilt Clearance

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Max. permissible tilt clearance, refer to 11 12 Cylinder Head with Cover M54 in ENGINE - TECHNICAL DATA .

NOTE: If tilt clearance is excessive, valve guide is reamed out and a repair valve with a larger shaft diameter is installed.

Fig 2: Identifying Valve Guide Diameter

Courtesy of BMW OF NORTH AMERICA, INC.

If necessary, ream valve guide. Refer to 11 12 600 REAMING A VALVE GUIDE (M52/S52/M52TU/M54/M56) .