TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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5-8 TM 9-1240-401-34&P 5-9. DIRECT SUPPORT TROUBLESHOOTING - continued MALFUNCTION TEST OR INSPECTION LOCATION CORRECTIVE ACTION ELBOW ASSEMBLY 3. LENS (5) IS FOGGED OR CONDENSATION IS PRESENT. Observe visually. Purge and charge telescope (TM 750-116). 5-10. GENERAL SUPPORT SYMPTOM INDEX Troubleshooting Procedure (Page) CAP ASSEMBLY Cap binds or jumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 5-9 COUNTER ASSEMBLY Azimuth counter and reset counter are not legible . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 5-9 Azimuth counter and reset counter do not operate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 5-9 Differential gear assembly noisy when azimuth knob is operated . . . . . . . . . . . . . . . . . . . . . . . . . .. 5-9 ELBOW ASSEMBLY Lens is damaged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 5-9 Lens will not focus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 5-9