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 871 of 1318

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

0077-5

DRAFT

0077

HWT0634

WARNING

ICON 3

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 7.

Connect air lines at under truck nozzles valve.

Disconnect pump house wire harness

under truck nozzles control valve connector.

Put UNDER TRUCK NOZZLES switch to

on position (WP 0004).

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

house wire harness wire 2772 (gray) at pump house wire harness under truck nozzles

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

If 22 to 28 VDC are not present, go to Step 10.

Step 8.

Put UNDER TRUCK NOZZLES switch to off position (WP 0004).

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 under truck nozzles control

valve connector, terminal 2 to a known good ground.

a.

If there is continuity, replace under truck nozzles 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).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION