Cleaning of Components. When you repair mixer body components you must remove all dirt and foreign
substances. Dirty parts usually fail within a short period. Follow these instructions during all cleaning operations.
Clean all parts before inspection, after repair, and before assembly.
Keep your hands free of grease. Grease can collect dust and grit.
After cleaning, wrap parts in plastic or paper, or cover them to keep off dust and dirt.
Particles blown by compressed air are hazardous.
Make sure the air stream is directed away from
yourself and other personnel.
Do not allow drycleaning solvents to come in contact with seals on flexible hoses. These cleaners cause
leather, rubber, and synthetic materials to dry out, rot, and lose pliability.
Use drycleaning solvent to clean inner and outer surfaces of castings, and all areas subject to oil and
Use a stiff brush to remove sludge and gum deposits from castings.
Use clean, dry, compressed air to blow out and dry all tapped holes in castings.
e. Oil Passages. Pay special attention to oil passages in castings and machined parts. All oil passages must be
clean and free of obstructions.
Use a wire or other suitable probe to break up any sludge or gum deposits.
Flush passages with drycleaning solvent.
Dry passages by blowing them out with compressed air.
Oil Seals and Flexible Hoses. Clean seals and flexible hoses with soap and water.
(1) Bearings require special cleaning. After removing surface oil and gum deposits, place bearings in hot oil
(140F) to loosen congealed oil and grease. Wipe bearings dry. Do not use compressed air. After cleaning, coat bearings
with a light film of oil. Wrap them in paper until you need them for inspection and assembly.
Refer to TM 9-214 for information on care and maintenance of bearings.