Specifications

TM 9-2350-311-34-1
2-13 CLEANING — CONTINUED
a. Cleaning of Materiel Received from Storage
WARNING
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Breathing vapor form decreasing solutions can cause headache, dizziness, loss of
muscular control, coma, permanent brain damage, or death. Ensure that area is
well ventilated as a preventative measure.
Dry-cleaning solvent (P-D-680) is toxic and flammable. Wear protective goggles
and gloves and use only in a well-ventilated area. Avoid contact with skin, eyes,
and clothes. Do not breath vapors. Do not use near open flame or excessive heat.
The flashpoint for type #1 is 100°F (38°C), and for type #2 is 138°F (59°C). If you
become dizzy while using dry-cleaning solvent, get fresh air immediately and
obtain medical aid. If contact with eyes is made, wash your eyes with water and
obtain medical aid immediately.
Materiel received from storage will be cleaned by dip-tank, vapor-degreaser, or steam method, whichever is applicable
or available. Descriptions of these methods follow. If some time is to elapse before the start of repair operations, apply
a coating of light grade preservative oil (item 10, Appx B) to all finished metal surfaces to prevent rusting.
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CAUTION
Do not immerse sealed-typed ball bearings in dry-cleaning solvent or hot oil.
Dip-tank method —
Disassemble as required. Using rubber gloves (item 26, Appx B), place parts in a
perforated metal basket, submerge, and agitate in a tank containing dry-cleaning solvent (item 7, Appx B).
Vapor-degreaser method
— Tanks containing a heated solution of trichloroethylene or perchloroethylene are
used for decreasing items that are very greasy or oily and are not readily cleaned by dip-tank method. Place
parts in a perforated metal basket, and submerge just below the vapors in the tank, keeping the basket in this
position until all of the grease, oil, or dirt melts and runs off the parts. If necessary, materiel maybe washed
with decreasing spray unit.
Steam method
— Place parts in a perforated metal basket and steam-treat until clean. This method is less
efficient than the vapor-degreaser method and may require additional cleaning of parts to remove final traces
of oil or dirt, particularly from recesses.
b. Cleaning After Repair
After repair and prior to assembly, remove shop dirt and other foreign matter from all metal surfaces. Use the dip-
tank or vapor-degreaser method or clean with cloths soaked in dry-cleaning solvent (item 7, Appx B).
c. Cleaning After Shop Inspection
After in-process shop inspections, dip parts in a tank containing fingerprint remover oil. Remove parts while
wearing rubber gloves, and dry thoroughly with dry compressed air or by wiping with clean, lint-free dry cloths.
Apply preservatives as soon as possible after cleaning.
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