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 663 of 1318

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

0071-25

DRAFT

0071

HWT0540

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 37.

Disconnect pump house wire harness pump cooler valve control connector.

Put cab or

pump operator’s panel PUMP COOLER 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

4037 (orange) at pump house wire harness pump cooler valve control connector,

terminal 1 and a known good ground.

If 22 to 28 VDC are not present, repair wire 4037 in pump house wire

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

harness.

Step 38.

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 pump cooler valve

control connector, terminal 2 to a known good ground.

a.

If there is continuity, replace pump cooler 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