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 TM 55-1905-220-14-11
5-79. CYLINDER BLOCK - MAINTENANCE INSTRUCTIONS. (Continued).
LOCATION
ITEM
ACTION
REMARKS
PRESSURE TEST (Cont)l
A cracked cylinder block must be replaced by a new
block.
(5)
After the test is completed,
remove the plates, drain the
water jacket and blow out all
of the passages in the block
with compressed air.
INSPECT
4.
a. After cleaning and pressure-testing
inspect the cylinder block.
b. Since most of the engine cooling is accomplished
by heat transfer through the cylinder liners to
the water jacket, a good liner-to-block contact
must exist when the engine is operating. Whenever
the cylinder liners are removed from an engine,
the block bores must be inspected.
NOTE
Before attempting to check the block bores, hone
them throughout their entire length until about 75%
of the area above the ports has been cleaned-up.
c.
Hone the block bores as follows:
(1)
Use a hone in which the cutting
radius of the stones can be set
in a fixed position to remove
irregularities in the bore rather
than following the irregularities
as with a spring-loaded hone.
Clean stones frequently with a
wire brush to prevent stone load-
ing. Follow the manufacturer's
instructions regarding the use
of oil or kerosene on the stones.
Do not use cutting agents with a
dry hone. Use 120 grit stones.
5-1077
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