Valve: Testing and Inspection

1. Clean valves thoroughly and replace burned, warped and cracked valves.
2. Measure valve stems for wear.

NOTE: Valve stems are chrome plated and should not be polished.

3. Remove carbon and varnish deposits from inside of valve guides with a reliable guide cleaner.

CHECKING VALVE GUIDES
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.

Figure 92 Measuring Valve Guide Wear - Typical:

3. Attach dial indicator Tool C-3339 to cylinder head and set it at right angle of valve stem being measured.





4. Move valve to and from the indicator.

VALVE GUIDES

Figure 91-Intake And Exhaust Valves:

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