TM 5-3825-229-14&P
4-24A.
SPRAY SYSTEM SOLENOID VALVES (cont)
a.
Testing (cont).
(b)
Repeat operation on override button two or three times. This may dislodge the dirt and stop the leak.
(c)
If air leakage continues, replace solenoid valve.
(3)
Refer to b. below and remove solenoid valve from spray system.
(4)
Connect the air compressor to the inlet port of the solenoid valve.
(5)
Turn on air pressure from compressor. Air should rush out of the outlet port. If air does not come out of the
outlet port or exits from the exhaust port, push in on override button two or three times and release. If this
does not correct problem, replace solenoid valve.
(6)
Connect the solenoid valve wires to the positive and negative terminals of the 12-volt DC battery. Either wire
to a terminal is correct. Polarity does not matter.
(7)
With wires connected, air should stop exhausting from outlet port. If air does not stop exhausting, push in on
override button two or three times and release. If air does not stop exhausting, replace solenoid valve.
(8)
Disconnect air supply from inlet port and connect it to the outlet port. With wires connected to the solenoid
valve as above, air should flow out of exhaust port. This indicates valve is functioning properly.
(9)
If air does not flow out of exhaust port, push in on override button two or three times and release. If this does
not correct problem, replace solenoid valve.
(10) Disconnect air line and battery wires from solenoid valve.
b.
Removal.
WARNING
Electrical shock hazard exists. Disconnect battery cables (para. 4-22).
(1)
Refer to para. 4-22 and disconnect battery cables.
(2)
Drain air reservoirs (para. 1-10. b. (2)).
(3)
Tag and disconnect wires (6) from solenoid valves (3 and 4).
(4)
Disconnect air lines (1 and 2) from solenoid valves (3 and 4). Remove exhaust elbows (5) from solenoid
valves.
(5)
Disconnect solenoid valves (3 and 4) from nipples connecting valves to air control valves (7). Remove
solenoid valves.
4-52