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The J I Case Company recently introduced a new series of Maxxum tractors (Figure 1). The product line now offers 60, 67, 75, and 84 PTO kW versions. The all new 84 kW version features a new fuel delivery system providing both greater power and reduced exhaust emissions. The powertrain also features increased capacity components required for the reliability of the increased power, 84 kW model. The new series incorporates numerous customer requested improvements of the 5100 Series, including increased comfort, convenience, and visibility features such as swivel seat, in-cab remote coupler flow controls, fender mounted hitch controls and all glass doors.

The CaseIH 7150 tractor has the highest PTO power of any row crop tractor currently produced. It has unprecedented power at 160 PTO kW and hitch lift capacity at 66.5 kN. The 7150 extends the 7100 Series Magnum family of row crop tractors to five models (7110, 7120, 7130, 7140 and now the 7150). This paper describes the development and new features of this tractor.

A discussion of vehicle design considerations in the development of mechanical front drive agricultural tractors based on the International Harvester 50 Series AWD models. Design and test criteria are discussed, as well as field data and deficiencies discovered during the development program.