TM-9-1240-400-34&P Technical Manual for M109 Telescopes and Mounts Download
Page 114 of 344
TM 9-1240-400-34&P Section VI. GENERAL SUPPORT FINAL INSPECTION PROCEDURES 3-11. GENERAL. a. This section describes and illustrates the final inspection of the M139 elbow telescope. A final inspection will be performed prior to returning the M139 elbow telescope to the using unit or to the supply system. b. If the M139 elbow telescope inspected fails to meet the required standards, ensure that all maintenance authorized at the applicable level has been performed correctly. 3-12. FINAL INSPECTION INSTRUCTIONS. This task covers: a. Visual inspection b. Eyepiece assembly focus inspection and adjustment c. Setting up and adjusting telescope test fixture d. Mounting M139 elbow telescope on telescope test fixture e. Parallax inspection and adjustment f. Reticle plumb/collimation inspection and adjustment g. Illumination inspection h. Purging and charging INITIAL SETUP: Tools and Special Tools General Safety Instructions Tool kit, electronic: system maintenance (SC 5180-95-CL-B29 ) Injection gun, hand (7648117) Materials/Parts Use adhesives, cleaning solvents, Sealing compound (item 10, appx C) and sealing compounds in well- ventilated area away from open Reference flame. Adhesives, cleaning sol- TM 9-254 vents, and sealing compounds are harmful to skin and clothing, can burn easily, and may give off harmful vapor. 3-18 WARNING