TM 5-3810-207-20/TO 36C23-3-37-12D-Electrical connections for testing cutout relay and generatorFigure 9 - Continued.(b)Voltage regulator opening voltage.With voltmeter connected as shownon E, figure 9 increase rpm tooperating speed. Observe readingon voltmeter. It should read 27.5 to29.5 volts. If adjustment isnecessary turn the voltage regulatoradjusting screw clockwise toincrease and counterclockwise todecrease. Set voltage at 29.2 volts.(c)Current regulator maximumamperage. With ammeterconnected as shown on F, figure 9and either the test set carbon pileload set up at 25 to 30 amps, or firsthaving operated the starter for 10 or15 seconds to provide the load,increase rpm to operating speed,observe reading on ammeter atwhich points first vibrate. Thisshould be 38 to 42 amperes. Ifadjustment is necessary, adjust thecurrent regulator to 40 amperes inthe same manner as the voltageregulator.(d)Replace generator regulator coverand repeat all tests before removingadapters. Run regulator voltageand amperage output throughseveral cycles of increasing anddecreasing engine speed from idle35
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