TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-401-34&P 5-26. M117/M117A2 PANORAMIC TELESCOPE FINAL INSPECTION AND ADJUSTMENT - continued I o. GUNNER’S AID KNOB TORQUE INSPECTION 1 Remove headless straight pin (1), gunner’s aid knob (2), shim(s) (3), and seal (4). 2 Apply grease to inside diameter of seal (4). and sealing compound to outside diameter of seal (4). Install seal (4), shim(s) (3), gunner’s aid knob (2), and headless straight pin (1). 3 Using torque adapter (8213929) (Item 2, appx F) and torque wrench, check that running torque of gunner’s aid knob (2) is 1 to 4 pound-inches (0.11 to 0.45 N-m) in both directions. 4 Add or remove shim(s) (3) until required torque is achieved. I p. AZIMUTH KNOB TORQUE INSPECTION 1 2 3 4 5 6 7 Using torque adapter (8599917) (Item 6, appx F) and torque wrench, check that running torque of azimuth knob (1) is 4 to 8 pound-inches (0.45 to 0.90 N-m) in both directions. If requirement in step 1 cannot be met, remove azimuth knob (1) (ref. para 5-13). Remove cover (2) (ref. para 5–1 3). Temporarily install azimuth knob (1), torque adapter, and torque wrench. Using adjustable spanner wrench, adjust retainer (3) until required torque in step 1 is achieved. Scribe a line on retainer (3) and housing (4). Back out retainer (3) and apply small amount of sealing compound and turn in retainer (3) to scribe marks. Install cover (2) (ref. para 5-17) and azimuth knob (1) (ref. para 5-13). q. PURGING AND CHARGING Refer to TM 750-116 for purging and charging proce- dures. 5-60