TM 9-2320-328-13&P-1
0058-2
DRAFT
0058
HWT0751A
NOTE
•
Ensure system air pressure is at least 85 psi (586 kPa) during this procedure.
System air
pressure is required to activate valves.
•
Do not engage PUMP PTO during this procedure, except when performing complete
system checks.
Valve operations can be checked without water pump operation.
•
Valve operations can be checked by observing valve shaft rotation.
Valves are open when
tabs or yellow paint tabs are aligned with direction of fluid flow.
Step 2.
Push battery disconnect switch to on position (WP 0007).
If system air pressure is
below 85 psi (586 kPa), start engine and allow system air pressure to build to at least
85 psi (586 kPa) (TM 9-2320-422-10).
Then shut off engine (TM 9-2320-422-10).
Open pump house controls access door (WP 0009).
While an assistant puts cab or
pump operator’s panel FOAM SYSTEM switch to on and off positions (WP 0004), check
if foam system shutoff valve and eductor valve operate to open and closed position.
If foam system shutoff valve or eductor valve do not operate to open or
closed position, troubleshoot Foam Not Delivered From All Systems
(Bumper Turret, Under Truck Nozzles, and Manual Metering Controls) or
System Does Not Shut Off (WP 0057).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION