Specifications

Proposal Number PSDF #P09-0004
off to the atmosphere.
AIR INLET / OUTLET
An outside air system inlet/outlet connection shall be provided and mounted. This connection shall be
clearly labeled as to the function. A pipe thread frame coupling shall be provided with 1/4" npt threads. The
fire department shall install the appropriate hose quick connect fittings.
MERITOR/ROCKWELL/WABCO ABS BRAKE SYSTEM
A four channel, single rear axle model, MERITOR/ROCKWELL/WABCO ABS Braking System shall be
supplied.
A frame mounted electronic control unit (ECU) shall monitor and control wheel speed during braking.
Wheel sensors, constantly monitoring wheel speed, send information to the ECU. If a wheel begins to lock
the ECU transmits an electrical impulse to modulator valves that can apply, release or hold the air pressure in
the brake chambers. The rapid modulation of air pressure prevents wheel lock-up and increases driver
control.
This ABS system shall be a 4S/4M system with four (4) wheel speed sensors and four (4) modulator valves.
If a fault occurs in one wheel, that wheel shall have normal (non-ABS) brake function. The other wheels
shall continue to provide the ABS function. If the ABS system should fail completely, the brake control
shall be returned to normal (non-ABS) braking.
An ABS warning light shall be installed on the driver's dash message center. This warning light shall cycle
through a test stage at the point of ignition turn on and remain illuminated until the vehicle reaches
approximately four (4) MPH. The light shall illuminate in other conditions to warn of an ABS system failure
and shall illuminate when the diagnostic function is activated.
LASER ALIGNMENT
The chassis shall have a laser alignment performed at the factory before delivery.
DIESEL ENGINE
The chassis shall be powered by a CUMMINS or approved equal Diesel engine as described below:
The model of the engine shall be determined by the “Road test Certification” as shown on page 2 of this
specification with a minimum of 360 horsepower.
Standard Equipment on the engine to include the following:
GOVERNOR: Limiting speed type
AIR CLEANER: Farr or equal with fresh air intake.
OIL FILTER: A full flow / by-pass combination
LUBE OIL COOLER: Non-drainback, thermostatically controlled with full flow cooling.
FUEL FILTER: One fuel filter providing 10 micron absolute filtration with check valve.
STARTER: A DELCO, 12 volt, 38 MT-HD starter motor.
AIR COMPRESSOR: A Wabco 18.7 cfm compressor shall be provided.
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