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 TM 55-1905-221-14-4
6-29. CYLINDER BLOCK - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION/ITEM
ACTION
REMARKS
INSPECT (Cont)
m. Check the remaining
cylinder block
surfaces and threaded
holes. Check all of
the mating surfaces,
or mounting pads, for
flatness, nicks, and
burrs. Clean-up
damaged threads
in tapped holes with
a tap or install
helical thread
inserts if necessary.
n. After inspection, if
the cylinder block is
not to be used
immediately, spray
the machined surfaces
with engine oil. If
the block is to
be stored for an
extended period of
time, spray or dip it
in a polar-type rust
preventive such as
Valvoline Oil company's
"Tectyl 502-C", or
equivalent. Castings
free of grease or oil
will rust when
exposed to the
atmosphere.
NOTE
Before a reconditioned or new service replacement cylinder block is used, steam
clean it to remove the rust preventive and blow out the oil galleries with
compressed air.
6-542
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