Valve: Testing and Inspection

CLEANING
1. Clean all valves thoroughly and discard burned, warped and cracked valves.

INSPECTION

VALVES





1. Measure valve stems for wear (Fig. 32) approximately 60 min (2.36 inch) below the valve lock grooves.

NOTE: Valve stems are chrome plated and should not be polished (Fig. 32).

VALVE GUIDES

NOTE: Replace cylinder head if stem-to-guide clearance exceeds specifications, or if guide is loose in cylinder head.

1. Measure valve stem-to-guide clearance as follows:
2. Install valve into cylinder head so it is 15 mm (0.590 inch) off the valve seat. A small piece of hose may be used to hold valve in place.





3. Attach dial indicator Tool C-3339 to cylinder head and set it at right angle of valve stem being measured (Fig. 33).
4. Move valve to and from the indicator.





5. Check valve guide height (Fig. 34).