TTB-9-2920-225-34-1 Regulator Check Out and Repair 100 Amp 2920-00-900-7993 Download
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TB 9-2920-225-34-1 Figure 2-8. Test points–model 03. d. Relay. (1) Place ohmmeter probes across relay coil terminals (see fig. 2-5). Meter should read ap- proximately 60 ohms. (2) Place ohmmeter probes across contactor terminals (see fig. 2-5). Meter should read infinity (open circuit ). (3) If other readings are obtained, replace relay with NSN 2920-00-735–9542. e. Detailed Circuit Checks. (1) Table 2-2 contains “power off” resist- ance checks of the circiut (see figs. 2–6 and 2–8 for test points). (2) Table 2-2 contains “power on” voltage checks of the circuit (see figs. 2-6 and 2-8 for test points). f. Functional Check. Check the performance of the regulator on the test stand and make final voltage adjustments. Voltage output should read 28 volts. If the regulator does not function prop- erly, perform the following: (1) Check wires and connections. 2-9