TM-9-1240-400-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-400-34&P 5-5. CATEGORIES OF INSPECTION (CONT). c. Table 5-1 lists initial inspection procedures for the M137 telescope mount. Final inspection procedures are located on page 5-52. d. reembarkation inspection procedures are located on page 5-70. Table 5-1. INITIAL INSPECTION-M137 TELESCOPE MOUNT ITEM NO. ITEM T0 BE INSPECTED PROCEDURE 1 M137 Telescope Mount Inspect for good overall appearance with all parts securely tightened in place. Check that electrical wiring is free of cuts, nicks, and general deterioration. 2 Mounting Surfaces Inspect for burrs and corrosion; must be free of burrs and corrosion. 3 Decal and Identification Inspect for legibility; must be legible and clearly Plates defined. 4 Cross-Level Assembly Rotate cross-level assembly knob. It must turn smoothly with less than 11.00 in.-lb (1.24 N-m) torque. Backlash must not exceed 1.0 mil. The mount must travel freely through an angle of 20 degrees (355.6 mils) to the right and 20 degrees (355.6 mils) to the left. The mount must make cant (cross-level) corrections left and right as follows: 5-2