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

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2006 BMW X5, 2006 BMW X3, 2005 BMW X5, 2005 BMW X3, and 2004 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

(valve removed)

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: Attaching Dial Gauge

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Max. permissible tilt clearance, refer to 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 Ream Valve Guide Dimension

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) .