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Custom Fire Apparatus, Inc. <br />ELECTRONIC POWER STEERING FLUID LEVEL INDICATOR <br />The power steering fluid shall be monitored electronically and shall send a signal to activate an audible <br />alarm and visual warning in the instrument panel when fluid level falls below normal. <br />POWER STEERING PUMP <br />The hydraulic power steering pump shall be a TRW PS and shall be gear driven from the engine. The <br />pump shall be a balanced, positive displacement, sliding vane type. The power steering system shall <br />include an oil to air passive cooler. <br />FRONT AXLE CRAMP ANGLE <br />The chassis shall have a front axle cramp angle of 45-degrees to the left and 43-degrees to the right. <br />POWER STEERING GEAR <br />The power steering gear shall be a TRW model TAS 85 with an assist cylinder. <br />CHASSIS ALIGNMENT <br />The chassis frame rails shall be measured to insure the length is correct and cross checked to make sure <br />they run parallel and are square to each other. The front and rear axles shall be laser aligned. The front <br />tires and wheels shall be aligned and toe -in set on the front tires by the chassis manufacturer. <br />REAR AXLE <br />The rear axle shall be a Meritor model RT-46-160 tandem drive axle. The axle shall include precision <br />forged, single reduction differential gearing, and shall have a fire service rated capacity of 48,000 <br />pounds. <br />The axle shall be built of superior construction and quality components to provide the rugged <br />dependability needed to stand up to the fire industry's demands. The axle shall include rectangular <br />shaped, hot -formed housing with a standard wall thickness of 0.50 of an inch for extra strength and <br />rigidity and a rigid differential case for high axle strength and reduced maintenance. <br />The axle shall have heavy-duty Hypoid gearing for longer life, greater strength and quieter operation. <br />Industry -standard wheel ends for compatibility with both disc and drum brakes, and unitized oil seal <br />technology to keep lubricant in and help prevent contaminant damage will be used. <br />REAR AXLE DIFFERENTIAL LUBRICATION <br />The rear axle differential shall be lubricated with synthetic oil. <br />REAR WHEEL BEARING LUBRICATION <br />The rear axle wheel bearings shall be lubricated with synthetic oil. <br />REAR AXLE DIFFERENTIAL CONTROL <br />The tandem axle chassis shall include an inter -axle differential lock, which shall allow both axles to be <br />engaged as drive axles. The inter -axle differential lock shall be controlled by a locking rocker switch on <br />the switch panel. The light on the switch shall illuminate with positive engagement of the inter -axle <br />differential lock. <br />07/26/22 <br />-25- <br />