TM-9-6015 Aiming Post Lights M14, M41 and M43 Download
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CHAPTER 4 REPAIR AND REBUILD Section I. GENERAL MAINTENANCE 19. General a. Information and instructions contained herein are supplementary to instructions for the using organizations contained in the pertinent operator's manuals. b. This chapter contains general and specific maintenance instruc- tions for the repair and rebuild of each major component. In the following sections, specific adjustments, repairs and rebuild proce- dures are described in order to restore each aiming post light to a serviceable condition. 20. General Methods a. Handling of Disassembled Parts. A parts tray or suitable re- ceptacle should be provided so that parts, as removed, can be placed in their respective positions in relation to the assembled aiming post light. Always keep the relative position of parts until the light is completely assembled. This is especially important where is assembled by a technician other than the one who disassembled it. b. Removal of Burs. Burs on the screw threads of filter and window assemblies are to be removed by rubbing down with crocus cloth. Be sure to remove filings from threads by brushing with a camel's hair b rush o r blowing with compressed air. c. Removal of Corrosion or Rust. (1) (2) CLOTH, abrasive, aluminum oxide, grade 2/0. REMOVER, paint and varnish, type II. External parts. Where the painted surfaces of an aiming post light have been scraped off to expose the bare metal, the unit is subject to corrosion. Aiming post lights received in a corroded condition, externally, by ordnance shops, shall be processed to return the original finish to the unit, as follows: 27