Clean all parts before inspection, after repair, and before assembly.
Hands should be kept free of any accumulation of grease, which can collect dust, dirt, or grit.
After cleaning, all parts should be covered or wrapped to protect them from dust and dirt.
Parts that are subject to rust should be lightly oiled.
Observe the following precautions during all cleaning operations:
· Drycleaning Solvent (P-D-680) is TOXIC and flammable. Wear protective goggles and
gloves; use only in a well-ventilated area; avoid contact with skin, eyes, and clothes;
and do not breathe vapors. Keep away from heat or flame. Never smoke when using
solvent; the flashpoint for type I drycleaning solvent is 100°F (38°C), type II is 138°F
(59°C), and type III is 200°F (93.3°C). Failure to do so may result in injury or death to
personnel. If personnel become dizzy while using cleaning solvent, immediately get
fresh air and medical help. If solvent contacts skin or clothes, flush with cold water. If
solvent contacts eyes, immediately flush eyes with water and get immediate medical
· Improper cleaning methods and use of unauthorized cleaning solvents may injure
personnel and damage equipment. Refer to TM9-247 for correct information.
· Eye shields must be worn when cleaning with a wire brush. Flying rust and metal
particles may cause injury to personnel.
· Particles blown by compressed air are hazardous. Make certain the air stream is
directed away from user and other personnel in the area. To prevent injury, user must
wear protective goggles or face shield when using compressed air.
b. External Engine Cleaning.
Protect all electrical equipment that could be damaged by the steam or moisture before steam
Cover all openings before steam cleaning.
After cleaning, dry and apply a light coat of oil to all parts subject to rust.
Blow out all tapped (threaded) holes with compressed air to remove dirt and cleaning fluids.
c. Disassembled Parts Cleaning.
Place all disassembled parts in wire baskets for cleaning.
Dry and cover all cleaned parts.
Place parts on or in racks and hold for inspection or repair.
All parts subject to rusting must be lightly oiled and wrapped.
Keep all related parts and components together. Do not mix parts.