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Truck,Firefighting,Structural, 1,000 GPM, 4 by 2
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MIL-T-28571G(NAVY)
The overall dimensions shall not exceed the following:
3.7 Dimensions.
360-inches
Length
96-inches
Width
118-inches
Height
192-inches
Wheelbase
Chassis components.
3.8
3.8.1 Weight rating and distribution.  The manufacturer's gvw rating for the
fire truck chassis furnished shall be not less than 35,000 lb.  The total gvw of
the complete truck shall not exceed the manufacturer's gvw rating when fully
equipped as specified herein, including all specified firefighting equipment,
serviced with fuel, water, and lubricants, loaded with 750 gallons of water in
the water tank, 100 gallons of foam in the foam tank, a 1,600 lb simulated load
uniformly distributed in the main hose bed and a firefighting crew, or
equivalent deadweight, in the cab having a combined weight of not less than 800
lbs. weight distribution ratio between the front and rear axles shall be such as
to insure positive traction at the rear wheels and positive steering at the
front wheels under all operating conditions specified herein.  The percentage of
gvw at front axle shall be not less than 25 percent of the vehicle in all phases
of loading and shall at no time exceed the capacity rating of any of the front
axle components.  The application of weights to the chassis for the purpose of
meeting the gvw distribution requirements between front and rear axle is not
acceptable .
3,8.2  Engine  The fire truck engine shall be a diesel engine having not
less than 300 gross horsepower, with torque and speed characteristics to meet
satisfactorily all mobile and pumping performance requirements specified herein.
The engine furnished in all trucks shall comply with Federal Regulations, and
shall be the same make and model.  The diesel engine shall have the necessary
constant load and endurance characteristics for long pumping operations. The
diesel engine shall be a liquid cooled, compression ignition, two or four cycle
engine, with not less than six cylinders.  The diesel engine shall achieve
self-sustained combustion at the manufacturer's rated idle speed in less than 5
minutes in ambient temperature from -20F to +125F.  The fire truck shall meet
the mobile and pumping performance requirements specified herein utilizing
diesel fuel.  The engine shall be fitted with the engine manufacturer's standard
or recommended fuel filter system.  The engine manufacturer's standard "engine
start-up" procedure (engine tune-up) shall be applied before delivery of the
completed fire truck.  The engine coolant system shall be fitted with silicone
rubber hoses.
3.8.2.1 Governor.  A governor shall be provided that will limit the engine
to the maximum full load revolutions per minute (rpm) recommended by the engine
manufacture r.  The governor shall provide maximum effectiveness under all engine
operating conditions and shall not restrict engine power output below governed
full load rpm.
3.8.2.2 Power pla nt he ater.  When specified (see 6.2), an engine coolant
heater shall be provided.  The heater shall operate on 110 volt (V) alternating
current (at), 60 Hertz (Hz), and shall be wired through a junction block to a
single three pronged (male) weatherproof slave receptacle for receiving external
power and grounding vehicle.  The receptacle shall be located near the engine at
7

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