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 365 of 1318

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

0056-3

DRAFT

0056

Change 1

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Step 4.

With hydraulic oil temperature at 125°F (52°C) or greater, check if cab or pump

operator’s panel pressure governor control displays Hydraulic Oil At A Critical

Level (WP 0017).

..

a.

If pressure governor control displays, Hydraulic Oil At A Critical level,

clean hydraulic heat exchanger external cooling fins or replace

hydraulic heat exchanger (WP 0134).

..

b.

If pressure governor control does not display, Hydraulic Oil At A Critical

Level, fault corrected.

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HWT1122

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WARNING

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ICON 3

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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 5.

Remove pump house panel K (WP 0339). Disconnect pump house wire harness fan

temperature switch connector.

With a test lead set, check for 22 to 28 VDC between

pump house wire harness wire 3277 (gray) from fan temperature switch connector,

terminal 1 to a known good ground.

..

If 22 to 28 VDC are present, go to Step 7.

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MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION