Windsor-Severence Fire Protection District
Heavy Rescue
Production Specification
SVI #774 Page 35 of 126 April 19, 2010
VEHICLE TOP SPEED
The top speed of the vehicle shall be approximately 65 MPH +/-2 MPH at governed engine RPM.
REAR SUSPENSION
The single rear axle shall feature a Reyco 102AR air suspension with a single air bag on each side attached to a tapered
forged drop leaf spring with one adjustable and one fixed torque rods.
The suspension shall feature dual air height control valves which shall be installed to ensure equal frame height on both
sides of the vehicle regardless of the load. The suspension shall also include two premium shock absorbers, one each
side.
The rear suspension capacity shall be rated at 21,000 to 27,000 pounds to meet the rear axle rating selected.
REAR SHOCK ABSORBERS
Shock absorbers shall be supplied by the suspension manufacturer and installed on the rear axle suspension.
FRONT TIRE
The front tires shall be Michelin 425/65R-22.5 20PR "L" tubeless radial XZY3 mixed service tread.
The front tire stamped load capacity shall be 22,800 pounds per axle with a speed rating of 65 miles per hour when
properly inflated to 120 pounds per square inch.
The front tire U. S. Fire Service intermittent load capacity shall be 23,000 pounds per axle with a speed rating of 65 miles
per hour when properly inflated to 120 pounds per square inch.
REAR TIRE
The rear tires shall be Michelin 12R-22.5 16PR "H" tubeless radial XDN2 all weather tread.
The rear tire stamped load capacity shall be 27,120 pounds per axle with a speed capacity of 75 miles per hour when
properly inflated to 120 pounds per square inch.
The rear tire US Fire Service Intermittent Usage load capacity shall be 28,880 pounds per axle with a speed capacity of
75 miles per hour when properly inflated to 120 pounds per square inch.
TIRE PRESSURE EQUALIZATION SYSTEM
There shall be a voucher provided with the chassis for Crossfire dual tire equalization system provided on both sets of
dual tires on the rear axle. The Crossfire pressure system shall equalize and monitor the valve which is mounted
between the dual tires. This shall bolt easily to the drive axle end allowing air to flow freely from one tire to the other,
maintaining equal tire pressure and load distribution. The Crossfire system shall maximize tire life, decrease rolling
resistance for increased fuel mileage and improve stability braking and overall safety.
The Crossfire dual tire equalization system shall be redeemed upon the vehicle manufacture’s receipt of the voucher
along with the vehicle in-service weight for each axle.
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