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 54 of 1318
TM 9-2320-328-13&P-1
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DRAFT
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5.
One 4 in. (10.2 cm) direct tank water tank fill is provided.
The inlet is piped directly from water tank to an
external location on the rear of the vehicle.
An electric over-air-valve controls the inlet.
6.
A bumper turret is piped to the front bumper of the personnel cab.
The turret has a horizontal rotation of
180 degrees and operates from 45 degrees above to 20 degrees below horizontal.
Horizontal rotation
and automatic oscillation are driven by a 24-VDC direct drive motor/actuator. Plumbing consists of 2 in.
(5 cm) piping and flexible hose with a constant flow 250 GPM (946 l/min) nozzle.
7.
Turret is remote controlled from a control box located in the center of the personnel cab.
A joystick is
provided for water on/off, monitor left/right, monitor up/down, and a straight or fog pattern.
8.
Four (4) under truck nozzles located below the vehicle are capable of 1% Class A foam and are
controlled inside the personnel cab.
9.
The standard two person HEMTT personnel cab has been retained.
The standard HEMTT passenger
side seat has been replaced with officer’s seat equipped with a Self-Contained Breathing Apparatus
(SCBA) seat back.
10.
Personnel cab access doors open to 90 degrees from closed position to allow safe and fast access for
crewman in full MOPP gear.
11.
A 2,500 gallon (9,463 l) portable water tank is provided for extra off truck water capacity.
12.
The vehicle is equipped with a set of two, two-way, FM handheld, 5 W, 150 to 174 MHz radios, and one
cab mounted two-way, VHF, 40 Watt, 128 channel base radio.
The Net base is installed and operational
in personnel cab, with all electrical supply and antenna provisions.
The radio set is water and heat
resistant with programmable channel selection.
Each handheld radio is provided with a base recharging
unit, which maintains battery charge.
13.
Two hundred feet (61 m) of 1 in. (2.54 cm) hose is provided on a 24 VDC hose reel with a manual
unwind and electrical or manual rewind, located in pump house on driver side of the vehicle.
14.
Folding portable ladder is used to access driver side fender, driver side pump house, and passenger side
pump house.
LOCATION AND DESCRIPTION OF MAJOR COMPONENTS
1.
Personnel Cab:
Used to transport crew, and house vehicle control, firefighting controls, gauges, and
indicators for firefighting operations.
2.
Equipment Body:
Used to carry all BII, COEI, AAL, and repair parts.
3.
Pump Operator’s Panel:
Used by crew to control firefighting apparatus from driver side of outside
vehicle.
4.
Water Tank:
Stows 2,500 gallons (9,463 l) of water used by system.
5.
Foam Tank:
Stows 50 gallons (189 l) of foam agent used for Class A foam based fires.
6.
Rear Access Ladder:
Used by crew to access hose, hatch compartments, foam fill access, and tank fill
from top of HEWATT equipment body.
7.
Stowage Compartments:
Eleven (11) stowage compartments used to stow COEI and BII.
8.
Warning Lights:
Used to indicate fire situation.
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