TM 9-2320-361-34 2-8. CLEANING (Contd) h. Bearings. (1) Bearings require special cleaning. After removing surface oil and gum deposits, place bearings in hot oil 140F (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. (2) Refer to TM 9-214 for information on care of bearings. . Drycleaning solvent is flammable and will not be used near open flame. Use only in well-ventilated places. Failure to do so may result in injury to personnel. ● Compressed air source will not exceed 30 psi (207 kPa). When cleaning with compressed air, eyeshields must be worn. Failure to wear eyeshields may result in injury to personnel. i. Machine Tooled Parts. Clean with drycleaning solvent and dry with compressed air. j. Machined Surfaces. Clean with drycleaning solvent and dry with lint-free cloth. k. Mating Surfaces. Use compressed air to blow out all tapped screw holes when cleaning gasket material (ex: cylinder head gasket cleaning). 2-9. INSPECTION a. General Instructions. Procedures for inspections will be the same for many parts and components which make up the vehicle subassemblies. General procedures are detailed in “b’ through “p.” Dimensional standards for parts have been fixed at extremely close tolerances, so use specification tables. Use specified inspection equipment for inspections where cracks and other damage cannot be spotted visually. Exercise extreme care in all phases of inspection. b. Castings. (1) Inspect all ferrous and nonferrous castings for cracks using a magnifying glass and strong light. (2) Refer to MIL-I-6866, Inspection, Liquid Penetrant Methods, and MIL-I-6868, Inspection Process, Magnetic Particles. (3) Particularly check areas around studs, pipe plugs, threaded inserts, and sharp corners. Replace all cracked castings. (4) Inspect machined surfaces for nicks, burrs, or raised metal. Mark damaged areas for repair or replacement. (5) Inspect all pipe plugs, pipe plug openings, screws, and screw openings for damaged or stripped threads. (6) Check all gasket mating surfaces, flanges on housings, and supports for warpage with a straightedge or surface plate. Visually inspect mating flanges for discolorations. This may indicate persistent oil leakage. (7) Check all castings for conformance to applicable repair standards. c. Bearings. Refer to TM 9-214 for inspection of bearings. Check all bearings for conformance to applicable repair standards. d. Studs, Bolts, and Screws. Replace if threads are damaged, bent, loose, or stretched. e. Gears. (1) (2) (3) 2-34 NOTE When gear teeth wear limits are not established, good judgement is required to determine if gear replacement is necessary. Inspect all gears for cracks using a magnifying glass and strong light. No cracks are allowed. Inspect gear teeth for wear, sharp fins, burrs, and galled or pitted surfaces. Check keyway slots for wear and/or damage.