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 902 of 1318

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

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DRAFT

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HWT1057A

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 9.

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

Open pump operator’s panel

(WP 0207).

Push battery disconnect switch to on position.

With a test lead set, check

for 22 to 28 VDC between pump operator’s panel wire harness wire 2834 (red) at

WATER TANK DRAIN switch terminal and a known good ground.

If 22 to 28 VDC are not present, repair wire 2834 in pump operator’s panel

wire harness if repairable

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

operator’s panel wire harness (WP 0303).

Step 10.

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

With a test lead set, check for

continuity across WATER TANK DRAIN switch from terminal wire 2834 (red) to terminal

wire 4053 (brown), while switch is in OPEN position.

a.

If there is continuity, repair wire 4053 in pump operator’s panel wire

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

operator’s panel wire harness (WP 0303).

b.

If there is no continuity, replace WATER TANK DRAIN

switch (WP 0220).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION