TM 5-1940-277-34
CYLINDER HEAD ASSEMBLY INSPECTION AND REPAIR INSTRUCTIONS (Continued)
LOCATION
ITEM
ACTION
REMARKS
c.
Regrind face
Use lathe.
if not unduly
pitted or
distorted.
Minimum edge
thickness 0.008
in. (0.79 mm).
d.
Replace valve
guide if valve
stem scuffed
or scratched.
4.
Valve spring (2)
Valve spring (2)
a.
Inspect for
Distortion,
Broken ends.
b.
Test for
Use spring
resiliency.
tester.
Limits:
Valve open -
163 lb. (73.94
kg)
Valve closed -
65 lb. (29.48
kg).
c.
Replace spring
if defect noted
or not within
resiliency.
5.
Cylinder head
Cylinder head
a.
Inspect for
Use accurate
(1)
(1)
warpage.
straightedge and
feeler gage.
b.
Inspect for
Seal cooling
cracks.
passages, pres-
surize and place
head in heated
water.
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