TM-9-1240-400-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-400-34&P 4-5. CATEGORIES OF INSPECTION (CONT). Table 4-1. INITIAL INSPECTION-M138 TELESCOPE MOUNT Item No. Item To Be Inspected Procedure 1 M138 Telescope Mount Inspect for good overall appearance with all parts securely tightened in place: 2 Mounting Surface Inspect for cleanliness and freedom from nicks and burrs. 3 Identification Plate Inspect for legibility. 4,5 Elevation Locking Lever (1) With lever in locked position, a torque of 5.00 and Elevation Worm Shaft in.-lb (0.56 N-m) applied to worm will not change alinement of M139 elbow telescope. (2) With lever released, worm shall move socket 444.45 mils above and below center position. 6 Eyebolt Assembly Must lock and hold M139 elbow telescope or fabricated bushing. 4-2