TM 9--2350--292--20--1
0221 00--6
FUEL/WATER SEPARATOR OPERATION TESTS -- CONTINUED
0221 00
Automatic Drain Test--Continued
NOTE
Remove upper and lower sensor probes from suitable
metal container as soon as fluid begins draining from
drain 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) in
water 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 29
BLACK
LEAD
RED
LEAD
SUITABLE METAL
CONTAINERS
22
3
2
20
(+)
(--)
28
29