DRAFT
TM 5-4210-249-13&P-1
0002
c.
Features.
1.
Cabs. 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 SCBA seat back. An
additional four-person crew cab has been added, located separate from front cab. The crew cab is
constructed of a tubular steel frame and skins and is equipped with air conditioner. Crew cab doors have
a roll-up type window.
2.
Cab Pump/Foam System Controls. An additional pump control panel is located inside the personnel
cab, which provides the following:
Pump engine start/engine
Tank to pump control
Water and foam level gauges
Foam system controls
Windshield deluge system controls
Ground Sweeps controls
Roof and bumper turret controls
3.
Electrical System. Like the chassis electrical system, the fire package utilizes a 24-volt electric system.
The fuel level sending unit has been updated to accommodate dual gauges at both personnel cab and
pump operator's panel locations.
4.
Winterization Package. A winterization package is provided to allow operation of the pump, foam
system, and body down to -25F (-32C). The package includes two (2) diesel-fired 27,300 BTU
heaters, one inside the pump house compartment and one used to heat the rear compartment. These
heaters turn on at around 39F (4C), and turn off at 57F (14C).
Two (2) 2,250 W water heaters are installed in the water tank. The tank heaters turn on at 40F (4C)
and turn off at 60F (16C). The water pump must be engaged and circulating water to prevent freezing
the pump and plumbing. The pump compartment is sealed to reduce heat loss. Some of the plumbing
between the water tank to the pump is also heated and insulated.
5.
Pump Drive Engine. An auxiliary diesel pump drive Deutz engine is provided. The Deutz engine is
water-cooled and has 198 HP to drive the water pump sufficiently to meet pump performance.
The Deutz engine draws from the same fuel tank as the chassis.
The Deutz engine has remote start/stop controls.
6.
Inlet/Direct Water Tank Fill. One 4 in. (10.2 cm) direct water tank fill is provided. The inlet is piped
directly from water tank to an external location on the side of the vehicle. An electric over air valve
controls the inlet.
The direct water tank inlet includes an automatic water fill system. The system is designed to allow an
outside water source to maintain the water tank at full level without having the operator monitor the water
tank for an overflow situation.
The inlet includes a 4 in. (10.2 cm) cap and chain.
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0002-3
