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 597 of 1318

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

0068-7

DRAFT

0068

Change 1

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HWT0588

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Step 10.

Open pump operator’s panel (WP 0207).

Check discharge valve control wire harness

at NO. 1 DRIVER SIDE DISCHARGE valve control and No. 1 driver side discharge

valve motor for loose connections.

.

If discharge valve control wire harness connectors are loose, reconnect

loose connectors (WP 0284).

.

NOTE

•

Engine may have to be running to provide enough power to operate valve control.

Valve

will operate with less voltage, but only yellow indicator light will register on valve control.

•

Do not engage PUMP PTO during this procedure.

Valve operations can be checked

without water pump operation.

•

Valve motor operation can be checked by noting vibration of valve assembly, or by

observing rotation of 7/16” hex at end of valve drive assembly worm gear shaft.

•

Do not remove cap from No. 1 driver side discharge.

Water may be released from system

when valve is operated.

.

Step 11.

While an assistant pushes pump operator’s panel NO. 1 DRIVER SIDE DISCHARGE

valve control OPEN and CLOSE buttons (WP 0004), check if NO. 1 DRIVER SIDE

DISCHARGE valve control yellow indicator light illuminates and No. 1 driver side

discharge valve motor operates.

.

If yellow indicator light illuminates and valve motor operates, replace No. 1

driver side discharge valve drive assembly (WP 0248).

.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION