TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-401-34&P 4-8. DIRECT SUPPORT SYMPTOM INDEX MOUNTING SURFACES Mounting surfaces do not seat Ml 17/M1 17A2 panoramic CROSS-LEVEL MECHANISM Cross-level mechanism Cross-level mechanism Cross-level mechanism (1.24 N-m) to rotate . . LEVEL ASSEMBLY knob exceeds 0.5 mil backlash . . telescope correctly . . . . . . . . . . . . . . . . knob is erratic and rough during movement . . . . . . . knob requires torque in excess of 11 pound-inches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No illumination in cross-level or pitch level . . . . . . . . . . . . . . . . . . . . . . . . . . Troubleshooting Procedure (Page) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7 . . . . . . . . . . . . . . . . . . 4-7 . . . . . . . . . . . . . . . . . . 4-7 . . . . . . . . . . . . . . . . . . 4-7 4-9. DIRECT SUPPORT TROUBLESHOOTING MALFUNCTION TEST OR INSPECTION LOCATION CORRECTIVE ACTION MOUNTING SURFACES 1. MOUNTING SURFACES (1) DO NOT SEAT M117/M117A2 PANORAMIC TELESCOPE CORRECTLY. Observe visually. a. Clean mounting surfaces with cleaning compound (item 3, appx B). b. Remove burrs with abrasive cloth (item 4, appx B) dipped in cleaning compound (item 3, appx B). 4-6