Valve Guide: Testing and Inspection

Valve Guide, Checking

Special tools, testers and auxiliary items required

• Dial Gauge Holder (VW 387)

• Dial Gauge 0-10 mm (VAS 6079)

Sequence

- Insert the valve into the guide. The valve stem tip must be flush with the guide. Due to the slight difference in stem dimensions, ensure that only an intake valve is used in the intake guide and an exhaust valve in the exhaust guide.






- Determine the tip clearance.

Wear Limit






• If the wear limit is exceeded, measure again using a new valve. If the wear limit is still exceeded, replace the cylinder head.

• If the valve is to be replaced as part of a repair, use the new valve for the calculation.