TM 5-3805-280-24-2
Cylinder Head and Valves
GRIND VALVE SEATS
05
35
IMPORTANT: Valve seat grinding should only be
done by experienced personnel familiar
with equipment and capable of
maintaining required specifications.
ALWAYS keep valve guides and work
area clean when grinding valve seats to
maintain valve guide bore-to-seat
runout.
Grinding valve seats increases seat
width and valve recess in cylinder head.
A--Pilot
DO NOT grind excessively. Only a few
seconds are required to recondition the
average valve seat. Dress grinding
stone as necessary to maintain
specified seat angle.
Support the weight of grinder to avoid
excessive pressure on the stone.
Blend or radius all sharp edges after
grinding valve seats for a more effective
valve face-to-seat seal.
1. Install appropriate pilot (A) in valve guide bore.
Continued on next page
RG,05,DT7353 1911NOV971/4
13-93