TM 9-4520-258-14
2-5.
CLEANING AGENTS.
WARNING
DO NOT use diesel fuel, gasoline, or benzene (benzol) for cleaning.
DO NOT SMOKE when using cleaning solvent. NEVER USE IT NEAR AN OPEN FLAME. Be sure
there is a fire extinguisher nearby and use cleaning solvent only in well ventilated places. Flash
point of solvent is 138°F (60°C).
USE CAUTION when using cleaning solvents. Cleaning solvents evaporate quickly and can
irritate exposed skin if solvents contact skin. In cold weather, contact of exposed skin with
cleaning solvents can cause frostbite.
Cleaning Rust, Grease or Fuel. When cleaning grease or fuel buildup or rusty places, use a cleaning solvent. Then
apply a thin coat of light oil to affected area.
2-6.
LEAKAGE DEFINITIONS FOR OPERATOR PMCS.
It is necessary for you to know how fluid leakage affects the status of the equipment. Following are types/classes of
leakage an operator needs to know to be able to determine the status of the equipment. Learn these leakage definitions
and remember when in doubt, notify your supervisor.
CAUTION
Equipment not mission capable if leaks are found.
Leaks should be reported immediately to your supervisor.
a.
CLASS I Seepage of fluid (as indicated by wetness or discoloration) not great enough to form drops.
b.
CLASS II Leakage of fluid great enough to form drops but not enough to cause drops to drip from item being
checked/inspected.
c.
CLASS III Leakage of fluid great enough to form drops that fall from item being checked/inspected.
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