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 414 of 1318

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

0057-34

DRAFT

0057

Change 1

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HWT0347

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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.

.

Step 46.

Put cab FOAM SYSTEM switch to off position (WP 0004) and release.

Remove pump

house panel K (WP 0339).

While an assistant puts cab or pump operator’s panel

FOAM SYSTEM switch to ON position (WP 0004), check if eductor valve operates to

open position.

.

If eductor valve does not operate to open position, go to Step 51.

.

Step 47.

Put cab or pump operator’s panel FOAM SYSTEM switch to OFF position (WP 0004)

and release.

Check if air lines from air control valve manifold to foam system shutoff

valve are free from kinks and damage.

.

If air lines are kinked or damaged, replace damaged air lines (WP 0374).

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MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION