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

WARNING: This page is about a different car, the 2005 BMW 530i, 2005 BMW 525i, 2004 BMW 530i, and 2004 BMW 525i. 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.

NOTE: Max. permissible tilt clearance. See VALVES WITH SPRINGS .

Fig 1: Measuring Tilt Clearance

Courtesy of BMW OF NORTH AMERICA, INC.

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

If necessary, ream valve guide.

Fig 2: Identifying Valve

Courtesy of BMW OF NORTH AMERICA, INC.