TM 5-4310-386-146-6.General. This section contains general support maintenance procedures as authorized by the maintenanceallocation chart in Appendix B of this manual. Ensure all tools and parts are clean and free of oil, grease, rust, or othercontaminants when performing maintenance on air compressor.6-7.1st Stage Cylinder and PistonThis task covers: a.Replaceb.RepairINITIAL SETUPToolsMaterials/Parts (Cont)General Mechanic's Tool KitWater, Distilled (Item 9, Appendix E)(NSN 5180-00-177-7033)Detergent, Nonionic (Item 8, Appendix E)Caliper Set, Micrometer (NSN 5210-00-554-7134)Lubricating Oil (Item 15, Appendix E)Circlip Pliers (NSN 5120-00-789-0492)Piston Ring Removal Tool (PN N4453)Equipment ConditionPiston Ring Clamps (PN 57495-645)Compressor unit shutdown (para. 2-13).Materials/Parts1st stage compressor valve head assembly removed(para. 5-21)Cylinder, CompressorPiston, 1 st StageReferencesGasket, CrankcaseBands, Rubber (Item 4, Appendix E)Refer to Appendix F for torque values.Bags, Plastic (Item 3, Appendix E)Cleaning Procedures, Chapter 4, Section VII.a.Replace. (figure 6-1)WARNINGCleanliness is imperative in maintaining and handling diving air system components. All toolsand parts must be kept free of oil, grease, rust, or other contamination in accordance withChapter 4, Section VII of this manual. Foreign substances within an assembly could result inequipment failure and possible injury or death to personnel.Ensure that all air lines and components removed or openings into the air system that providesbreathing air are covered with a plastic bag and secured with a rubber band or taped shut. Smallcomponents should be stored in a plastic bag and sealed. Failure to do so will cause air systemto become contaminated and could result in injury or death to the diver.6-6
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