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 1111 of 1318

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

0102-9

DRAFT

0102

Change 1

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HWT1188

.

NOTE

Wire numbers with H prefix indicates that circuit is an extension of a HEMTT circuit.

.

Step 9.

Close compartment door (WP 0008).

Remove cab instrument panel A (WP 0205).

Check for 22 to 28 VDC between cab instrument panel wire harness wire H835 (white)

at blackout relay 1, terminal 86 and a known good ground.

.

If 22 to 28 VDC are not present, repair wire H835 in cab instrument panel

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

panel wire harness (WP 0279).

.

Step 10.

Check for 22 to 28 VDC between cab instrument panel wire harness wire 1138 (red) at

blackout relay 1, terminal 30 and a known good ground.

.

If 22 to 28 VDC are not present, repair wire 1138 in cab instrument panel

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

panel wire harness (WP 0279).

.

Step 11.

Turn Service Drive Lights Off (TM 9-2320-422-10).

Pull battery disconnect switch to off

position (WP 0007).

Check for continuity across cab instrument panel wire harness

wire 1640 (black) from blackout relay 1, terminal 85 to a known good ground.

.

If there is no continuity, repair wire 1640 in cab instrument panel wire

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

panel wire harness (WP 0279).

.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION