TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-401-34&P 3-34 3-22. EYEPIECE AND ERECTOR LENS SUBASSEMBLY MAINTENANCE INSTRUCTIONS This task covers: a. Disassembly b. Repair c. Assembly Tools Lockwashers (6) (Item 68, appx E) Preformed packing (Item 24, appx E) Drill bit no. 15 (0.180) (Item 13, appx F) Preformed packing (Item 37, appx E) Drill, electric 1/2” (Item 12, appx F) Preformed packing (Item 40, appx E) Shim (Item 53, appx E) Tool Kit, Electronic System, Repair, Field Mainte- nance (SC5180-95-CL-B29) 5180-01-168-0487 TM 9-254 Tubular spanner wrench, 2-9/16 and 2-37/64 inch (Item 34, appx F) M118A2/M118A3 elbow telescope removed from howitzer (TM 9-2350-311-10) Cotter pins (2) (Item 44, appx E) Grease (Item 6, appx B) Eyepiece and erector lens subassembly removed Grease (Item 7, appx B) from reticle cage and cant corrector subassembly Lockwashers (6) (Item 64, appx E) (ref. para 3-21) a. Disassembly 1 Remove two setscrews(1) 2 Using 2-9/16 and 2-37/64 inch tubular spanner wrench, remove cell assembly (2) from eyepiece arm (3). 3 Remove preformed packing (4) from cell assembly (2). Discard preformed packing. 4 Remove six machine screws (5), six Iockwashers (6), and prism cover (7). Discard Iockwashers. 5 Remove three setscrews (8) from prism cover (7) only if necessary for replacement. 6 Remove setscrews (9 and 10).