E 350 1 Ton Van V10-6.8L VIN S (1997)
Valve: Testing and Inspection
Stem to Guide Clearance
NOTE: Valve stem diameter must be within specifications before checking valve stem to valve guide clearance.
1. Install the Valve Stem Clearance Tool on the valve stem and install the Dial Indicator with Bracketry. Lower the valve until the Valve Stem
Clearance Tool contacts the upper surface of the valve guide.
NOTE: If necessary, use a magnetic base.
2. Move the Valve Stem Clearance Tool toward the Dial Indicator and zero the Dial Indicator. Move the Valve Stem Clearance Tool away from the
Dial Indicator 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.
