TM-9-1240-400-34&P Technical Manual for M109 Telescopes and Mounts Download
Page 162 of 344
TM 9-1240-400-34&P 5-6. TROUBLESHOOTING PROCEDURES (CONT). GENERAL SUPPORT SYMPTOM INDEX Troubleshooting Procedure (Page) ELEVATION ASSEMBLY Elevation control is erratic and rough during movement ............................................................................ 5-8 Elevation control exceeds 0.5 mil backlash................................................................................................ 5-9 Elevation control requires torque in excess of 11.00 in.-lb (1.24 newton-meters) to rotate ...................................................................................... 5-9 Table 5-3. GENERAL SUPPORT TROUBLESHOOTING MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION ELEVATION ASSEMBLY 1. ELEVATION CONTROL (1) IS ERRATIC AND ROUGH DURING MOVEMENT. a. Check for worn worm shaft assembly. Replace worm shaft assembly. Refer to page 5-46. b. Check for worn gears in gear sector. Replace worn gears. Refer to page 5-46. 5-8