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 844 of 1318

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

0076-6

DRAFT

0076

HWT2027

Step 10.

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

While an assistant holds TANK

TO PUMP switch in on position, check for continuity across TANK TO PUMP switch,

from terminal 5 to terminal 6.

a.

If there is continuity, repair wire 2855 in cab pump control wire harness

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

harness (WP 0281).

b.

If there is no continuity, replace cab TANK TO PUMP

switch (WP 0199).

NOTE

•

Ensure system air pressure is at least 85 psi (586 kPa) during this procedure.

System air

pressure is required to activate valves.

•

Do not engage PUMP PTO during this procedure, except when performing complete

system checks.

Valve operations can be checked without water pump operation.

•

Valve operations can be checked by observing valve shaft rotation.

Valves are open when

tabs or yellow paint tabs are aligned with direction of fluid flow.

Step 11.

Release pump operator’s panel TANK TO PUMP switch (WP 0004). While an assistant

puts cab TANK TO PUMP switch to closed position (WP 0004), check if tank-to-pump

valve operates to closed position.

If tank-to-pump valve does not operate to closed position, go to Step 15.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION