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 898 of 1318

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

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DRAFT

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HWT1118

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 4.

Put WATER TANK DRAIN switch to CLOSED position (WP 0004).

Connect air lines at

water tank drain valve.

Disconnect pump house wire harness water tank drain control

valve connector.

Put pump operator’s panel WATER TANK DRAIN switch to OPEN

position (WP 0004).

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

wire harness wire 4053 (brown) at water tank drain control valve connector, terminal 1

and a known good ground.

If 22 to 28 VDC are not present, go to Step 6.

Step 5.

Put WATER TANK DRAIN switch to CLOSED 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 water tank drain control valve

connector, terminal 2 to a known good ground.

a.

If there is continuity, replace water tank drain 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