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 395 of 1318

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

0057-15

DRAFT

0057

Change 1

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HWT1295

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WARNING

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ICON 3

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Remove rings, wristwatches, neck chains, and any other jewelry before working

around vehicle.

Jewelry can catch on equipment and cause serious injury.

Jewelry

and tools may short across electrical circuits and cause damage to equipment, or

severe burns or electrical shock to personnel.

.

Step 22.

Connect air line at eductor valve.

Disconnect pump house wire harness eductor control

valve connector.

Put cab or pump operator’s panel FOAM SYSTEM switch to on

position (WP 0004) and release.

With a test lead set, check for 22 to 28 VDC between

pump house wire harness wire 4054 (yellow) at pump house wire harness eductor

control valve connector, terminal 1 and a known good ground.

.

If 22 to 28 VDC are not present, repair wire 4054 in pump house wire

harness if repairable (TM 9-2320-325-14&P), or replace pump house wire

harness (WP 0302).

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Step 23.

Pull battery disconnect switch to off position (WP 0007).

With a test lead set, check for

continuity across wire 2200 (black) from pump house wire harness eductor control valve

connector, terminal 2 to a known good ground.

.

a.

If there is continuity, replace eductor control valve (WP 0271).

.

b.

If there is no continuity, repair wire 2200 in pump house wire harness if

repairable (TM 9-2320-325-14&P), or replace pump house wire

harness (WP 0302).

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MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION