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 415 of 1318

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

0057-35

DRAFT

0057

Change 1

.

HWT0361

.

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 lines at foam system shutoff valve and

observing air pressure escaping from air line, when foam system shutoff control valve is

activated.

Air will escape from the blue air line when FOAM SYSTEM switch is positioned

to the on position, and escape from the red air line when the FOAM SYSTEM switch is

positioned to the off position.

System air pressure may drop below 85 psi (586 kPa)

during this procedure.

.

Step 48.

Remove hose reel (WP 0247).

Disconnect air lines at foam system shutoff valve

(WP 0176).

While an assistant puts cab or pump operator’s panel FOAM SYSTEM

switch to ON and OFF positions (WP 0004), check if air pressure is present at foam

system shutoff valve.

.

If there is air pressure, replace foam system shutoff valve (WP 0176).

.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION