Sign up to sell your inventory with NSN Lookup

TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download

Page 244 of 344

TM 9-1240-401-34&P Section III. Troubleshooting 5.1-8. GENERAL a. The symptom index can be used as a quick guide to troubleshooting. Common malfunctions are listed in alphabetical order with a page number reference to the troubleshooting table where a test or inspection and corrective action are provided. b. The direct support troubleshooting table (ref. para 5.1-10) lists the common malfunctions which may be found during maintenance of the M15 quadrant. Perform the tests/inspections and corrective actions in the order listed. c. The general support troubleshooting table (ref. para 5.1-12) lists the common malfunctions which may be found during maintenance of the M15 quadrant. Perform the tests/inspections and corrective actions in the order listed. d. This manual cannot list all malfunctions that may occur, nor all tests or inspections and corrective actions. If a malfunction is not listed or is not corrected by listed corrective action, notify next higher maintenance level. 5.1-9. DIRECT SUPPORT SYMPTOM INDEX Troubleshooting Procedure (Page) CORRECTION KNOB ASSEMBLY Correction knob binds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1-12 COUNTER ASSEMBLY Correction counter fails to allow +50 mils min or -50 mils min . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1-12 COVER ASSEMBLY Counter dials have uneven or no illumination with 24 volts DC applied.. .................................................... 5.1-11 Counter windows are fogged or have condensation.. ............................................................................. 5.1-12 LEVEL ASSEMBLY Level vials have uneven or no illumination with 24 volts DC applied ......................................................... 5.1-11 Level vial has no bubble or is cracked.. .............................................................................................. 5.1-11 5.1-10 Change 1