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Specifications

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Proposal Number PSDF #P09-0004
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 Diesel engine as described below:
MODEL: ISM-500
NUMBER OF CYLINDERS: Six
BORE AND STROKE: 4.92" X 5.79"
DISPLACEMENT: 661 cu. in.
RATED BHP: 500 @ 2000 RPM
454 @ 2100 RPM
TORQUE: 1463 @ 1400
1550 @ 1200
COMPRESSION RATIO: 16.1:1
GOVERNED RPM: 2100
A Wabco 18.7 cfm compressor shall be provided.
All standard equipment on the engine shall be include.
ENGINE OIL
The engine shall have the initial factory fill made with a non-synthetic engine oil meeting the engine
manufacturer's recommendations.
EMISSION CONTROLS
The engine supplied shall meet the minimum standards of the EPA 2007 requirements. If the EPA 2007
engines are available then the 2010 EPA standards will apply..