Disassembled Parts Cleaning. Place all disassembled parts in suitable wire baskets for cleaning.
Dry and cover all cleaned parts.
Place cleaned parts in containers or holding racks for inspection or repair.
All parts subject to oxidation and rust must be lightly oiled and wrapped.
Keep all related parts and components together. Do not mix parts.
Improper cleaning methods and use of unauthorized cleaning solvents will not be used.
Refer to TM 9-247 for proper cleaning methods and solvents. Failure to comply may result
in damage to equipment or injury to personnel.
Clean inner and outer surfaces of castings (and all areas subject to grease and oil) with cleaning solvents. Refer to
Use a stiff brush to remove sludge and gum deposits.
Compressed air used for cleaning purposes will not exceed 30 psi (207 kPa). Use only with
effective chip guarding and protective equipment such as goggles or shield, gloves, etc.
Failure to comply may result in injury to personnel.
Use compressed air to blow out all tapped screw holes and to dry castings after cleaning.
Oil Passages. Particular attention must be given to all oil passages in castings and machined parts. All oil passages must be
clean and free of any obstructions.
Clean oil passages with wire brush probes to break up any sludge or gum deposits.
Wash passages by flushing with solvent. See TM 9-247.
Dry passages with compressed air.
Do not allow cleaning solvents to come in contact with seals, cables, or flexible hoses.
Solvents can cause leather, rubber, and some synthetic materials to dry out, rot, and lose
pliability, making them unserviceable.
Oil Seals, Electrical Cables, and Flexible Hoses. Clean with soap and water.
Bearings require special cleaning. After removing surface oil and gum deposits, place bearing in hot oil, 140°F (60°C), to
loosen congealed oil and grease. Wipe bearings dry (do not use compressed air). After cleaning, coat bearings with oil, wrap in paper,
and hold for inspection.
See TM 9-214 for information about care of bearings.
General Instructions. Inspection procedures will be the same for many of the engine parts and components that make up the
engine subassemblies. Follow the general procedures for inspection detailed in steps b. through h. Dimensional standards for various
parts have been fixed at extremely close tolerances: use the repair standards specification tables in Appendix F. Use specified
inspection equipment for inspection where cracks or other damage cannot be otherwise found. Exercise extreme care in all phases of