TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-401-34&P 5.1-15 KNOB ASSEMBLY MAINTENANCE INSTRUCTIONS - continued a. Disassembly 1 Support knob (1) with V-block and drive out headless grooved pin (2). 2 Remove knob (1) from gear shaft (3). Remove ball (4) and spring (5) from knob (1). 3 Remove preformed mechanical felt (6) from detent plate (7). Discard preformed mechanical felt. 4 Remove two setscrews (8) from detent plate (7). 5 Withdraw gear shaft (3) and remove flat washer (9), 12 key washers (10), and preformed packing (11). Discard preformed packing. 6 Remove headed straight pin (12) only if damaged. b. Repair 1 Remove corrosion, grease, and dirt from all parts. Refer to TM 9-254 for cleaning instructions. 2 Visually inspect for missing or damaged parts. 3 Repair or replace parts in accordance with authorized parts listed in appendix D. 5.1-24 Change 1