TM-9-1240-400-34&P Technical Manual for M109 Telescopes and Mounts Download
Page 82 of 344
TM 9-1240-400-34&P 2-17. M115 PANORAMIC TELESCOPE FINAL INSPECTION INSTRUCTIONS (CONT). IMAGE TILT ADJUSTMENT (CONT) NOTE • Rotate deflection knob to gain access to each setscrew. • Azimuth ring may be rotated to aline reticles and avoid optic cell assembly movement. 9 While rotating deflection knob (12), loosen three setscrews (11) on retaining ring of optic cell assembly (9). 10 Rotate optic cell assembly (9) by hand, until image is plumb when sighting through dioptometer (2). 11 Tighten three setscrews (11). 12 Apply sealing compound (item 10, appx C) to threads of setscrew (10). 13 Install setscrew (10) in plug hole until flush. 14 Install gasket (8), access cover (7), four lockwashers (6), and four machine screws (5). PARALLELISM OF RETICLE AND IMAGE 1 Perform image tilt adjustment. Refer to page 2- 65. NOTE Make sure numbers in projector collimator are right side up. 2 Rotate deflection knob (1) until reticle of M115 panoramic telescope (2) line coincides with reticle of projector collimator (3). The opposite extremity should place reticles in coincidence within 30 minutes (9.5 mils) of arc as measured on projector collimator (3). If specified tolerance is not met, go to step 3. 2-66