Valve Stem to Guide Clearance

NOTE: Valve stem diameter must be within specification before checking valve stem to valve guide clearance.





1. Install Valve Stem Clearance Tool on the valve stem and install a suitable Dial Indicator with Bracketry. Lower the valve until Valve Stem Clearance Tool contacts the upper surface of the valve guide.





2. Move Valve Stem Clearance Tool toward the dial indicator and zero Dial Indicator with Bracketry. Move Valve Stem Clearance Tool away from Dial Indicator with Bracketry and note the reading. The reading will be double the valve stem to valve guide clearance. Valves with oversize stems will need to be installed if out of specification.