TM 5-4220-233-14SECTION II. OPERATOR/CREW PREVENTIVE MAINTENANCE CHECKS AND SERVICES(PMCS)ParagraphPage2-3Preventive Maintenance Checks and Services (PMCS) ....................................2-42-3.PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS).To ensure that the Servicing Unit is ready for operation at all times, it must be inspected on a regular basis sothat defects may be found before they result in serious damage, equipment failure, or injury to personnel. Thissection contains systematic instructions on inspections, adjustments, and corrections to be performed by theoperator/crew.While performing PMCS, read and follow all safety instructions found in the Warning Summary at the front ofthis manual. Keep in mind all WARNINGs and CAUTIONs.a.Perform PMCS, found in Table 2-1, at the following intervals:(1) Perform Before PMCS just before operating the trailer or the Compressed Gas System.(2) Perform During PMCS while distributing breathing air from the Compressed Gas System.(3) Perform After PMCS immediately after towing the Servicing Unit or after distributing breathing air fromthe Compressed Gas System.b.Reporting RepairsAll defects which the operator cannot fix must be reported on a DA Form 2404, Equipment Inspection andMaintenance Worksheet, immediately after completing PMCS. If a serious problem Is found, IMMEDIATE-LYreport it to your supervisor.c. General PMCS Procedures.WARNINGDo not use dry cleaning solvent P-D-680 on any Compressed Air System components. Only use thecleaning agents specified in Chapter 4, Section VII for cleaning Compressed Air System components.Use of unauthorized cleaning agents could result in personnel Injury or death.Dry cleaning solvent P-D-680 is toxic and flammable. Always wear protective goggles and gloves, anduse only In a welt-ventilated area. Avoid contact with skin, eyes, and clothes, and DO NOT breathevapors. DO NOT use near open flame, excessive heat or to clean breathing air components. Thesolvent's flash solvent, Immediately get fresh air and medical help. If solvent contacts eyes,immediately wash your eyes and get medical aid.(1) Keep equipment clean. Dirt, oil, and debris may cover up a serious problem. Clean as you work and asneeded. For cleaning breathing air components of the Compressed Gas System refer to Chapter 4, SectionVII. DO NOT use tools from the trailer tool box or use solvent identified for the trailer components onbreathing-air components. Use dry cleaning solvent (Item 15, Appendix D) on all trailer metal surfaces. Usesoap and water on rubber, plastic, and painted surfaces.(2) While performing specific PMCS procedures, inspect the following components.(a) Bolts, Nuts, and Screws. Ensure that they are not loose, missing, bent, or broken. Report loose ormissing bolts, nuts, and screws to unit maintenance.(b) Welds. Inspect for gaps where parts are welded together. Check for loose or chipped, paint, rust,and cracks. Report bad welds to unit maintenance.(c) Electric Conduit, Wires, or Connectors. Inspect for cracked or broken conduit insulation, barewires, and loose or broken connectors. Report loose connections, and faulty wiring to unitmaintenance.(d) Hoses, Lines, and Fittings. Inspect for wear, damage, and leaks. Ensure that clamps and fittingsare tight. Report any damage, leaks, or loose fittings and clamps to unit maintenance.(3) Check that components are adequately lubricated in accordance with Chapter 3, Section 1.d.Specific PMCS Procedures.(1). Operator/crew PMCS are provided in Table 2-1. Always perform PMCS In the order listed Once itbecomes a habit, anything that is not right can be spotted in a minute.(2) Before performing PMCS, read all the checks required for the applicable interval and prepare all thetools needed. Have several clean rags (Item 13, Appendix D) handy Perform ALL inspections at theapplicable interval2-4
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