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

WARNING: This page is about a different car, the 2002 BMW Z3 and 2001 BMW Z3. 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. Refer to 11 12 CYLINDER HEAD WITH COVER M54 .

Fig 1: Measuring Tilt Clearance Using Dial Gauge

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. Refer to 11 12 600 REAMING A VALVE GUIDE (M52 / S52 / M52TU / M54 / M56) .

Fig 2: Identifying Valve Guide

Courtesy of BMW OF NORTH AMERICA, INC.