CLEANING AGENTS

SECTION III. PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)

Table 2-1. Preventive Maintenance Checks and Services

TM-10-1670-298-20P Container Delivery System A-7A Cargo Sling Manual
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TM 10-1670-298-20&P h. When you do your PMCS, you will always need a rag or two. Following are checks that are common to the container delivery system. (1) Keep It Clean. Dirt, grease, oil, and debris only get in the way and may cover up a serious problem. Clean as you work and as needed. Use dry cleaning solvent (SD-2) on all metal surfaces. Use soap and water when you clean rubber or plastic material. Upholstery can be cleaned with soap and water and a clean, damp cloth. (2) Rust and Corrosion. Check equipment for rust and corrosion. If any bare metal or corrosion exists, clean, and apply a thin coat of oil. Report it to your supervisor. (3) Bolts, Nuts, and Screws. Check them all for obvious looseness, missing, bent, or broken condition. You can't try them all with a tool, but look for chipped paint, bare metal, or rust around bolt heads. If you find a bolt, nut, or screw you think is loose, tighten it or report it to your supervisor. (4) Welds. Look for loose or chipped paint, rust, or gaps where parts are welded together. If you find a bad weld, report it to your supervisor. (5) Electric Wires and Connectors. Look for cracked, frayed, or broken insulation, bare wires, and loose or broken connectors. Tighten loose connectors. Report any damaged wires to your supervisor. i. When you check for “operating condition”you look at the component to see if Its serviceable. 2.7 CLEANING AGENTS. WARNING · DO NOT use diesel fuel, gasoline, or benzene (benzol) for cleaning · DO NOT SMOKE when using cleaning solvent. NEVER USE IT NEAR AN OPEN FLAME. Be sure there is a fire extinguisher nearby and use cleaning solvent only in well ventilated places. Flash point of solvent is 138 ºF (60ºC) · USE CAUTION when using cleaning solvents Cleaning solvents evaporate quickly and can irritate exposed skin if solvents contact skin In cold weather, contact of exposed skin with cleaning solvents can cause frostbite. · NOTE · Only use those authorized cleaning solvents or agents listed in Appendix E. · Cleaning Rust or Corrosion. When cleaning rust or corrosion from metal parts, use tetrachloroethylene. Then apply a thin coat of aircraft and instrument grease to affected area. 2-5

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