toxic. If it is necessary to clean food handling or potable
5. General. The following general instructions cover
water equipment, the items will be cleaned with soap and
disassembly, matchmarking, Iubrication, cleaning,
water to which a water soluble compound, such as a sal
drying, painting, marking, precautionary, and safety
soda, may be added. Thorough rinsing with potable
water will then be accomplished.
materials involved when preserving railroad equipment.
(b) Batteries and battery racks. Exterior surfaces of
Further instructions involving each detailed process may
storage batteries and battery racks which have become
be found in the publications mentioned in the applicable
contaminated with spilled electrolyte will be neutralized
with a solution composed of 8 ounces of soda ash or 1
pound of baking soda to a gallon of water. The cleaning
6. Disassembly and Matchmarking. Dissassembly will
solution must not be permitted to enter the battery. The
the minimum necessary to safeguard parts known to be
cleaned surfaces will be rinsed with clear, warm water.
subject to damage or loss and to allow ventilation. Bolts,
(2) Field cleaning. Process C1, C-3, C-14 and
nuts, and washers will be replaced on one of the mating
C-15 normally are used in field cleaning operations.
parts and secured. Parts removed during assembly will
Examples of mechanical means employed in the field
be preserved, packaged, identified, and stored in the
application of process C-1 are buffing, sanding, and
toolbox or in a nailed wood box conforming to FED PPP-
scratch brushing. Examples of chemical means are
B-621, class 2, style optional and stored in a protected
petroleum solvents and alkaline compounds.
location on the equipment Removed parts and mating
Shop cleaning operations.
parts remaining on the basic unit will be matchmarked
operations performed within a building normally are
identically, except where mating of parts is apparent, by
accomplished by processes C-1, C-3, C-5, C-7, C-14, C-
stenciled letters or numerals with gasoline soluble paint
15, and C-18.
conforming to MIL-P-13983. Parts which are too small to
(4) Fingerprint removal. Prior to preservation,
accommodate stencil marking will be identified by using
provide additional cleaning to critical and precision
metal tags, if available or cloth shipping tags conforming
machined surfaces by applying process C-5 to remove
to FED UU-T-81, type A. Securely attach the tags to the
fingerprints and perspiration residues.
parts in such a manner as to prevent damage to
preservation or to the parts being identified. The marked
cloth shipping tag will be waterproofed in accordance
Do not handle parts with bare hands after
cleaning has been accomplished.
7. Lubrication. Unless otherwise specified herein when
(5) Precautionary measures. Protect items
lubricating railroad equipment, use the lubricants
made of rubber, such as hose, and electrical insulation
required in the applicable lubrication orders. Equipment
from petroleum solvents by shielding greaseproof barrier
cleaned by processes indicated in paragraph 8a(2) and
material or other suitable material. Protect all items
(3) will be relubricated when such processes remove or
subject to damage by steam cleaning, such as
generators, starters, magnetos, and distributors, by
shielding with waterproof barrier material.
8. Cleaning and Drying.
impracticable to properly shield the items, remove during
a. Cleaning. Equipment and components will be
the cleaning operations.
cleaned using the most applicable cleaning process of
b. Drying. Immediately after cleaning, items will be
MIL-P-116. When possible, the entire item will be
thoroughly dried using the most applicable procedure of
cleaned without interruption.
MIL-P-116. Air lines supplying compressed air for drying
interruptions are necessary, temporary protection will be
provided to the areas that have been cleaned.
will be equipped with and water separators. These
(1) Special cleaning.
(a) Food handling and potable water equipment.
come in contact with food and beverages must not be
cleaned with any toxic material. Petroleum solvents are