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 653 of 1318

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

0071-15

DRAFT

0071

HWT0536A

Step 20.

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

Check for continuity across

wire 4037 (orange) from cab pump control wire harness PUMP COOLER switch

connector, terminal 6 to cab power distribution wire harness relay 2 connector,

terminal 1.

If there is no continuity, go to Step 23.

Step 21.

Check for continuity across cab power distribution wire harness wire 1640 (black) from

relay 2 connector, terminal 2 to a known good ground.

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

block (WP 0280).

Step 22.

Check for continuity across cab power distribution wire harness wire 4037 (orange)

from relay 2 connector, terminal 1 to relay 2 connector, terminal 5.

a.

If there is continuity, replace relay 2 (WP 0244).

b.

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

and block (WP 0280).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION