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 750 of 1318

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

0072-86

DRAFT

0072

Change 1

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HWT2710

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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.

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Step 106.

Put ENGINE switch to OFF position (TM 9-2320-422-10).

Pull battery disconnect

switch to off position (WP 0007).

Disconnect pump house wire harness pressure

governor ECU J1 connector (WP 0288).

Push battery disconnect switch to on position

(WP 0007).

Put ENGINE switch to ON position (TM 9-2320-422-10).

With a test lead

set, check for 22 to 28 VDC between pump house wire harness wire 1118 (red) at pump

house wire harness pressure governor ECU J1 connector, terminals 1 and 38 and a

known good ground.

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If 22 to 28 VDC are not present, repair wire 1118 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 107.

Put ENGINE switch to OFF position (TM 9-2320-422-10).

Pull battery disconnect

switch to off position (WP 0007).

With a test lead set, check for continuity across wire

2640 (black) from pump house wire harness pressure governor ECU J1 connector,

terminal 13 and a known good ground.

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If there is no continuity, repair wire 2640 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