TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-401-34&P 3-21. M218A2/M1 18A3 ELBOW TELESCOPE MAINTENANCE INSTRUCTIONS This task covers: a. Disassembly b. Repair c. Assembly Tools Lockwashers (4) (Item 77, appx E) Preformed packing (Item 36, appx E) Tool Kit, Electronic System, Repair, Field Mainte- Tissue (Item 11, appx B) nance (SC5180-95-CL-B29) 5180-01-168-0487 TM 9-254 Grease (Item 7, appx B) Nut, self-locking (Item 11, appx E) Lockwasher (Item 67, appx E) M118A2/M118A3 elbow telescope removed from Lockwashers (4) (Item 71, appx E) howitzer (TM 9-2350-311-10) a. Disassembly 1 2 3 4 5 6 7 Remove self-locking nut (1) and machine screw (2). Discard self-locking nut. Remove loop clamp (3) and eyeshield (4) from eyepiece and erector lens subassembly (5). Remove four cap screws (6) and four Iockwashers (7). Discard Iockwashers. Carefully separate eye- piece and erector lens subassembly (5) from reticle cage and cant corrector subassembly (8). Remove machine screw (9) and Iockwasher (10) from connector plug (11) and unplug wiring har- ness from connector on eyepiece and erector lens subassembly (5). Discard Iockwasher. Protect both ends of eyepiece and erector lens subassembly (5) with several thicknesses of tissue to prevent damage (ref. TM 9-254). Remove four cap screws (12), four Iockwashers (13), and two clamp rings (14). Discard lock- washers. Remove objective and diaphragm subassembly (15) from reticle cage and cant corrector subas- sembly (8). 3-32