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Page Title:
TABLE 3-3. PERIODIC INSPECTION REQUIREMENT (cont) |
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 TM 55-4920-373-14&P
TABLE 3-3. PERIODIC INSPECTION REQUIREMENT (cont)
PERIODIC
REQUIREMENT
INSPECTION
ITEM
100 hrs
Inspect for leaks, loose mount-
Cylinder heads
ing and defective gaskets.
Tighten loose mounting bolts
and nuts. During the first
weekly servicing of a new or
reconditioned engine, inspect
all head bolts for tightness.
Let engine warm up to normal
operating temperature and
tighten all loose bolts from 25
to 32 ft. lbs. torque
Inspect for leaks, loose mount-
100 hrs
Manifold
ing and defective gaskets.
Tighten loose mounting bolts
and nuts. During the first
weekly servicing of a new or
reconditioned engine, inspect
all head bolts for tightness.
Let engine warm up to normal
operating temperature and
tighten all loose bolts from 25
to 32 ft. lbs. torque
Inspect for leaks, loose mount-
100 hrs
ing and defective gaskets.
Tighten loose mounting bolts
and nuts. During the first
weekly servicing of a new or
reconditioned engine, inspect
all head bolts for tightness.
Let engine warm up to normal
operating temperature and
tighten all loose bolts from 25
to 32 ft. lbs. torque
100 hrs
If the valves are noisy or loss
Valve mechanism
of power is noticed, inspect the
condition of the valve mechan-
ism. Remove valves' covers
and adjust valve lifter clear-
ance if necessary. The correct
clearance for the valve lifters
is 0.0080 inch for the intake
valves and 0.0160 inch for the
exhaust valves. Replace cover
gaskets if defective
COMPRESSION TEST. Remove
the spark plugs and test the
cylinder compression by turning
the engine over several times
to stabilize gage reading. If
the gage reading varies more
than 10 pounds between the four
cylinders, inspect the cylinder
head bolts for tightness
3-12
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