TESTS (Continued) - TM-9-2815-220-240278

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TM-9-2815-220-24 Maintenance Manual for AVDS-1790 2CA 2DA and 2DR Air-Cooled 12-Cylinder Diesel Engines

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AFTER TESTS

TM 9-2815-220-24

FUEL/WATER SEPARATOR OPERATION TESTS

0042 00

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

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

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",

Meter Negative Lead

Meter Positive Lead

WP 0042 00-8