Section Il. GENERAL MAINTENANCE PRACTICES
3-2. CLEANING AND GENERAL REPAIR INSTRUCTIONS
(1) General. Procedures for cleaning will be the same for a great percentage of parts and
components. To avoid repetition of instructions, the general procedures for cleaning are
detailed in paragraphs 2 through 5 below. See TM 9-247 for additional information
pertaining to cleaning.
(a) Clean all parts before inspection, after repair, and before assembly.
(b) Hands should be kept free of grease which can collect dust and dirt.
(c) After cleaning, all parts should be covered or wrapped in plastic to protect them from
dust and dirt.
Clean inner and outer surfaces of casting and all areas subject to oil and grease with
Remove sludge and gum deposits from castings with a stiff brush.
Compressed air used for cleaning purposes will not exceed 30 PSI. Use
only with effective chip guarding and personal protective equipment
(goggles/shield, gloves, etc.).
(c) Use filtered compressed air to blow out and dry all tapped holes in castings.
(3) Oil Passages.
(a) Clean passages with wire or suitable probe to break up any sludge or gum deposits.
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 and dont breathe vapors. Do not use near
open flames or excessive heat. The flash point Is 100°F-138oF
(38°C-50oC). If you become dizzy while using cleaning solvent, get fresh
air immediately and get medical aid. If contact with eyes is made, wash
your eyes with water and get medical aid immediately.