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 848 of 1318

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

0076-10

DRAFT

0076

HWT1753A

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 15.

Release TANK TO PUMP switch (WP 0004).

Remove cab instrument panel A

(WP 0205).

Remove relay 8 (WP 0244).

While an assistant puts cab TANK TO PUMP

switch to close position (WP 0004), check for 22 to 28 VDC between cab power

distribution wire harness wire 2770 (blue) at relay 8 connector, terminal 1 and a known

good ground.

If 22 to 28 VDC are not present, go to Step 17.

Step 16.

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

Check for continuity across

cab power distribution wire harness wire 1640 (black) from relay 8 connector, terminal 2

to a known good ground.

a.

If there is continuity, replace relay 8 (WP 0244).

b.

If there is no continuity, replace cab power distribution wire harness

and block (WP 0280).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION