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 TM 55-1905-219-14-10
5-20. CYLINDER BLOCK-MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
INSPECT (Cont)
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 re-
move irregularities in the bore rather than
following the irregularities as with a spring-
loaded hone. Clean the stones frequently with
a wire brush to prevent stone loading. Follow
the hone manufacturer's instructions regarding
the use of oil or kerosene on the stones. Do
not use such cutting agents with a dry hone.
Use 120 grit stones.
(2)
Insert the hone in the bore and adjust the
stones snugly to the narrowest section. When
correctly adjusted, the hone will not shake
in the bore, but will drag freely up and down
the bore when the hone is not running.
5-364
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