TM-9-2320-328-13-P-1

HEMTT-BASED WATER TENDER (HEWATT)

TECHNICAL MANUAL; OPERATOR’S AND FIELD LEVEL MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST); PART 1 OF 3

MARCH 2009

TM-9-2320-328-13-P-1 - Page 439 of 1318

TM 9-2320-328-13&P-1

0060-3

DRAFT

0060

HWT1423A

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 3.

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 control access panel (WP 0008).

While an assistant puts cab or

pump operator’s panel FOAM SYSTEM switch to ON position (WP 0004), check if foam

system shutoff valve operates to open position.

If foam system shutoff valve does not operate to open 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