TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-401-34&P Item No. Item To Be Inspected Procedures 10 ELEVATION HANDWHEEL Check elevation handwheel (10) to ensure running torque is 8 to 12 pound-inches (0.904 to 1.356 N-m). 11 CORRECTION COUNTER Check that correction counter (11 ) adds or subtracts an equal number of roils from the elevation counter (9). 12 CORRECTION KNOB Check correction knob (12) to ensure running torque is 2 to 4 pound-inches (0.226 to 0.452 N-m). 13 OVERLAY ASSEMBLY Check overlay assembly (13) to ensure light is sufficient to clearly define markings on counter. I Section Ill. Troubleshooting I 4-7. GENERAL a. b. c. d. The symptom index can be used as a quick guide to troubleshooting. Common malfunctions are listed in alpha- betical order with a page number reference to the troubleshooting table, where a test or inspection and corrective action are provided. The direct support troubleshooting table (ref. para 4-9) lists the common malfunctions which maybe found dur- ing maintenance of the M145/M145A1 telescope mount. Perform t he tests/inspections and corrective actions in the order listed. The general support troubleshooting table (ref. para 4-11) lists the common malfunctions which maybe found during maintenance of the M145/M145A1 telescope mount. Perform the tests/inspections and corrective actions in the order listed. 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 depot maintenance. 4-5