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South Bend Fire Department <br />CommanderChassis <br />·Manufacturer's lifetimewarranty <br />The frame ratings shall be as follows: <br />·110,000 PSI minimum yield strength high strength low alloy steel <br />·Minimum Resisting Bending Moment (RBM) of 2,810,000-inch pounds per rail <br />To avoid framecrackingand failure over time, the top flange of the frame adjacent to the engine <br />installation shall have a tapered design. Notches for engine components shall not be accepted <br />due to fatigue and the potential for cracking. No Exceptions <br />UNDER-FRAME REINFORCEMENT <br />An under slung framereinforcement shall be installed below the frame rails in the transmission <br />area to increase the vertical rigidity of the frame. <br />The under-frame reinforcement provides: <br />·Enhancedhandling <br />·Improved ride quality <br />·Increaseresistance to frame and cross member fatigue <br />·Enhancedvehicle stability providing improved safety to occupants <br />CROSS MEMBERS <br />There shall bea minimum of seven (7) steel plate cross members installedon the apparatus. <br />·50,000 psi minimum yield strength steel plate cross members <br />·Manufacturer's lifetimewarranty to match framewarranty. No Exceptions. <br />·Installedwith one-piececross member gusset tomaximize vertical strength and minimize cross <br />member flex <br />·Crossmembers can be inverted whenrequired to allow for PTO drive line installation without the <br />need for notching or modifying the cross members in anyway. No Exceptions. <br />10039-001609/02/20 <br />55 <br />PDF created with pdfFactory Pro trial version www.pdffactory.com <br /> <br />