2.2.4 Special Instructions

Section II. OPERATOR PREVENTIVE MAINTENANCE CHECKS AND SER- VICES (PMCS)

TM-9-6115-668-13 5Kw 28VDC Auxiliary Power Unit (APU) MEP 952B Manual
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TM 9-6115-668-13 2.2.4 Special Instructions. Preventive maintenance is not limited to performing the checks and ser- vices listed in the PMCS table. Covering unused receptacles, stowing unused accessories, and other rou- tine procedures such as equipment inventory, cleaning components, and touch-up painting are not listed in the table. These are things you should do any time you see that they need to be done. If a routine check is listed in the PMCS table, it is because experience has shown that problems may occur with this item. Take along the tools and cleaning cloths needed to perform the required checks and services. Use the information in the following paragraphs to help you identify problems at any time. Use the following information to help identify potential problems before and during checks and services. WARNING Dry cleaning solvent used to clean parts Is potentially dangerous to personnel and property. Clean parts In a well-ventilated area. Avoid inhalation of solvent fumes. Wear goggles and rubber gloves to pro- tect eyes and skin. Wash exposed skin thoroughly. Do not smoke or use near open flame or excessive heat. Failure toobserve this warning can cause severe personal Injury or death. C A U T I O N Keep cleaning solvents, gasoline and lubricants away from rubber or soft plastic parts. They will deteriorate material. a. Keep it clean. Dirt, grease, and oil get in the way and may cover up a serious problem. Use dry cleaning solvent to clean metal surfaces, b. Use soap and water to clean rubber or plastic parts and material. c. Check all bolts, nuts, and screws to make sure they are not loose, missing, bent, or broken. Do not try to check them with a tool, but look for chipped paint, bare metal, or rust around bolt heads. If you find one loose, report it to the next higher level of maintenance. d. Inspect welds for loose or chipped paint, rust, or gaps where parts are welded together. If a broken weld is found, report it to the next higher level of maintenance. e. Inspect electrical wires, connectors, terminals, and receptacles for cracked or broken insulation, bare wires, and loose or broken connectors. Tighten loose connectors. Examine terminals and re- ceptacles for serviceability. If deficiencies are found, report them to the next higher level of mainte- nance. f. Inspect hoses and fluid lines. Look for wear, damage, and leaks. Make sure that clamps and fittings are tight. Wet spots and stains around a fitting or connector can mean a leak. If a leak comes from a loose connector, or if something is broken or worn out, report it to the next higher level of mainte- nance. 2 - 1 3

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