TM 5-4220-227-14
(3) Wipe all of the external surfaces of components and piping with detergent or alcohol solvent to remove
grease or dirt.
(4) All personnel shall have clean hands.
(5) All tools used in the removal must be clean and grease-free.
(6) Remove component or piping.
(7) Immediately bag or seal all exposed ends of system with plastic.
b. Installation or Reinstallation.
(1) The new component or cleaned pipe shall be wrapped or double bagged. If not, the item shall be returned for
cleaning.
(2) The component or piping shall be removed from bagging and shall be inspected for damage at the mating
surfaces, threads, or connecting surfaces and any primary surface. Inspect for dust or minor particle
contamination, and remove with lint-free rag.
(3) Mating components and pipe shall have protection materials or plugs removed.
(4) Mating surfaces, preformed packings and threads shall be coated lightly with an approved lubricant. Threaded
surfaces must be coated to prevent galling of threads at assembly.
(5) A pressure test shall be performed to verify that there are no leaks and that the correct fittings have been
installed in the system.
4-55.
Pre-Cleaning of Components or Piping. Upon receipt of new components not cleaned or components and
pipe removed from the system for cleaning, the item shall be pre-cleaned. Doing this shall prepare the component for
final cleaning. Pre-cleaning will be accomplished in an area separate from the clean area. The pre-cleaning will include
but is not limited to the following:
a. All wrapping shall be removed.
b. Loose paint, rust, brackets, panels, tags, supports and other such items shall be removed.
c. If hydrocarbons and/or other contaminants are known to have been introduced into the component or piping, a
thorough degreasing procedure shall be initiated Trisodium phosphate (TSP) or non-ionic detergent (NID) may be
used.
d. Visually inspect the pre-cleaned articles under bright light to ensure that all gross contamination has been removed.
e. Bag all components and ends of pipe with plastic to await cleaning.
4-56.
Cleaning Method Non-Ionic Detergent. This method outlines the cleaning procedures for oil-free cleaning of
metallic/nonmetallic components or assemblies using non-ionic detergent. This procedure is only to be used if there is no
equipment available to conduct the TSP cleaning method.
4-87
