TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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4-46 TM 9-1240-401-34&P 4-22. SEGMENT ASSEMBLY MAINTENANCE INSTRUCTIONS - continued b. Disassembly 2 3 4 1 Using 1-1/8 and 1-9/64 inch tubular spanner wrench, remove nut (8). Remove bearing (9), separator (10), and bearing (11). Remove retaining plate (2) and mechanical felt (12), then separate them. Discard mechanical felt. Remove two machine screws (13) and two stops (14) from segment (15). 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 author- ized parts listed in appendix D. d. Assembly 1 2 3 4 5 6 Install two stops (14) and two machine screws (13). Lubricate new mechanical felt (12) with oil and in- sert into retaining plate (2). Install retaining plate (2) on segment (15). Install bearing (11), separator (10), bearing (9), and nut (8). Using 1-1/8 and 1-9/64 inch tubular spanner wrench, tighten nut (8) to preload bearing (9) and bearing (11) to obtain free rotation without end play. Stake nut (8) after preloading.