TM-9-2815-220-24 Maintenance Manual for AVDS-1790-2CA AVDS-1790-DA and AVDS-1790-2DR Engines Download
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TM 9-2815-220-24 FUEL/WATER SEPARATOR OPERATION TESTS 0042 00 WP 0042 00-8 TESTS (Continued) 3. Control unit test (continued): d. Continue to hold the low-level probe (15) onto the negative terminal while again pressing the high-level probe (14) to the negative terminal. The voltmeter should continue to register zero volts. e. Turn the power supply off for 1 second or longer. Turn the power supply on and the voltmeter should again register 24 volts. f. Remove the high probe (14) from the negative terminal and the meter should continue to register 24 volts. g. Remove the low probe (15) from the negative terminal in less than 15 seconds and the meter should return to zero volts. h. Once again press the low probe (15) and then the high probe (14) to the negative terminal and the meter should return to 24 volts. i. If control unit does not respond as outlined above, it is not functioning correctly and must be replaced. Go to "Fuel/Water Separator Automatic Drain System Replacement", WP 0084. 14 15 Meter Negative Lead Meter Positive Lead