TM 9--2350--292--20--10221 00--6FUEL/WATER SEPARATOR OPERATION TESTS -- CONTINUED0221 00Automatic Drain Test--ContinuedNOTERemove upper and lower sensor probes from suitablemetal container as soon as fluid begins draining fromdrain valve tube.14. Listen for solenoid drain valve (28) to click and fluid begins to drain from solenoid drain valve tube (20).15. If click is heard and fluid does not drain, check solenoid drain valve (28) and lines for obstructions (WP 0219 00).16. If click is heard and fluid does drain, perform 15--second Drain Test.17. If click is not heard and fluid fails to drain:a. Disconnect harness (29) from solenoid drain valve (28).b. Place red multimeter in socket A of harness (29) and black lead to ground. Hold sensor probes (2 and 3) inwater in suitable container. Check for voltage.Remove sensor probes (2 and 3) from water.c. If 24 V dc is present, replace solenoid drain valve (28) (WP 0219 00). If 24 V dc is not present, replace fuel/water separator control box (22) (WP 0219 00).Figure 29BLACKLEADREDLEADSUITABLE METALCONTAINERS223220(+)(--)2829
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