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 433 of 1318

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

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DRAFT

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HWT0504

WARNING

ICON 26,66

•

Be sure to wear proper eye protection to prevent injury or death.

If air lines are

under pressure when they are disconnected, they can whip around and cause

injury to personnel.

Caution should be exercised when disconnecting air line

fittings.

•

Be sure to wear proper eye protection to prevent injury or death.

Air lines may be

under pressure when control valve is operated.

If under pressure and air lines are

disconnected, air lines may whip around and cause injury to personnel.

Caution

should be exercised when operating control valve with air lines disconnected.

NOTE

Air pressure is checked by disconnecting air line at under truck nozzles foam metering

valve and observing air pressure escaping from air line.

When under truck nozzles foam

metering control valve is activated, air will escape from air line.

System air pressure may

drop below 85 psi (586 kPa) during this procedure.

Step 6.

Remove hose reel (WP 0247).

Disconnect air line at under truck nozzles foam

metering valve (WP 0174). While an assistant puts UNDER TRUCK NOZZLES switch

to on position (WP 0004), check if air pressure is present at under truck nozzles foam

metering valve.

If there is air pressure, replace under truck nozzles foam metering valve

(WP 0174).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION