Valve Guide: Testing and Inspection

11 12 595 - Checking a valve guide for wear (N52)





Necessary preliminary tasks:
- Remove all valve springs Service and Repair.





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:
See illustration.
Max. permissible tilt clearance 0.5 mm.





Is the valve guide is outside the tolerance, the cylinder head must be replaced.
Assemble engine.