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 TM 55-1905-221-14-2
5-15. CYLINDER HEAD (Continued).
LOCATION/ITEM
ACTION
REMARKS
REPAIR/REPLACEMENT (Cont)
NOTE
The eccentric grinding method for reconditioning valve seat inserts is recommended. This
method produces a finer, more accurate finish since only one point of the grinding wheel is in
contact with the valve seat at any time. A micrometer feed permits feeding the grinding wheel
into the work .001 inch at a time.
The eccentric valve seat grinder set, tool J8165, used to recondition or grind the valve seat
inserts consists of:
a. Grinder, tool J8165-1
b. Dial gage, tool J8165-2
c. Pilot, tool J8165-3
d. Grinding wheel (15), tool J8165-4
e. Grinding wheel (30), tool J8165-5
f. Grinding wheel (60), tool J8165-7
CAUTION
Do not permit the grinding wheel to contact the
cylinder head when grinding the insert.
p.
Grind the inserts as follows:
1. Use the 30 grinding wheel
on the valve seat.
2. Use the 60 grinding wheel
to open the throat of the
insert.
5-369
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