Specifications

Proposal Number PSDF #P09-0004
COOLANT RECOVERY SYSTEM
A coolant recovery system shall be installed on the chassis. This tank is designed to capture coolant
overflow when the engine coolant warms and expands. As the engine cools the overflow is then pulled out
of the tank and back into the radiator, thus maintaining proper coolant levels.
CHARGE AIR COOLER RADIATOR
The engine charge-air cooler shall have sufficient capacity to perform under the engine manufacturers
installation requirements. The chassis manufacturer shall demonstrate the ability to meet this requirement
with the submittal of an approved EPQ to the fire department for the apparatus.
COOLANT HOSES
The entire chassis cooling system shall have premium rubber hoses. All clamps to be stainless steel worm
drive type clamps.
LIFE COOLANT
The coolant system shall contain a mixture to keep the coolant from freezing to a temperature of -34 degrees
F.
SPARK ARRESTOR
A spark arrestor shall be installed in the chassis air intake system. This arrestor shall be mounted behind the
intake grille to filter out airborne embers.
HORTON FAN
A HORTON fan clutch shall be installed on the engine. A manual switch shall be provided, in the dash, to
over ride the fan control in event of fan failure or conditions that may result in overheating of the engine.
EXHAUST SYSTEM
A single exhaust pipe shall be provided for the engine. The exhaust pipe shall be supplied with a 1500
degree, fiberglass tape with vermiculite. The wrap shall extend from the engine turbo charger to just below
the frame rail.
The aluminized muffler shall be located under the frame on the right side of the apparatus.
The tailpipe shall extend from the exhaust muffler/aftertreatment device to the rear of the vehicle making a
90° bend to exit the vehicle ahead of the rear tires on the curbside of the vehicle. The end of the pipe shall be
cut square or perpendicular to the exhaust pipe centerline.
TRANSMISSION
The transmission shall be an Allison 4000EVS automatic transmission with electronic controls.
The transmission shall be equipped with a lock-up control circuit that shall automatically shift the
transmission into 4th gear lock-up when the pump is shifted into gear.
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