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 450 of 1318

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

0061-10

DRAFT

0061

HWT0515

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 flush valve and observing air

pressure escaping from air line, when foam flush control valve is activated.

Air will escape

from blue air line when FOAM FLUSH switch is put to ON position, and escape from red

air line when FOAM FLUSH switch is put to OFF position.

System air pressure may drop

below 85 psi (586 kPa) during this procedure.

Step 13.

Disconnect air lines at foam flush valve.

While an assistant puts pump operator’s panel

FOAM FLUSH switch to ON and OFF position (WP 0004), check if air pressure is

present at foam flush valve.

If there is air pressure, replace foam flush valve (WP 0179).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION