Quantcast INSTALLATION - CYLINDER HEAD OFF ENGINE (Cont) - TM-55-1905-220-14-60811

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TM 55-1905-220-14-6
3-165.2.
EXHAUST VALVE - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
INSTALLATION - CYLINDER HEAD OFF ENGINE (Cont)
c.
Valve
Inspect.
Inspect the
insert
valve seat in-
counterbore
sert counter-
bore in the
cylinder head
for cleanliness,
concentricity,
flatness and
cracks. The
counterbores
in a four valve
cylinder head
have a diameter
of 1.260 inch
to 1.261 inch
(3.200 to 3.203
cm) and a depth
of .338 inch to
.352 inch
(0.859 to 0.894
cm). The
counterbores
must be concen-
tric with the
valve guides
within .033
inch (0.0076
cm) total in-
dicator read-
ing. If re-
quired, use a
valve seat
insert .010
inch (0.025 cm)
oversize on the
outside dia-
meter.
3-2786


 


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