TM 5-4320-302-14
6-9. VALVES, VALVE GUIDES, AND VALVE SEATS (CONT)
Location/Item
Action
Remarks
WARNING
Severe burns, illness, or death may result if personnel fail to handle diesel fuel oil
properly. Observe the following precautions:
·Do not inhale vapor.
·Do not handle fuel near open flame, sparks, or excessive heat.
·Work in a well-ventilated area.
NOTE
Always use NEW valve in making valve seat insert ring measurements.
b.
Measure distance between installed valve head
center and cylinder head seat with depth gage.
Distance should be between 0.2047 inch (5.2
mm) and 0.2323 inch (5.9 mm). If distance
exceeds upper limit, replace valve seat insert ring.
6-52
