Three new J-series crawler dozers from John Deere – the 450J, 550J and 650J – have dual-path, hydrostatic-drive transmissions that provide infinite speed control for live power turns, counter rotation, dynamic braking and automatic tracking control. The transmission’s decelerator mode eliminates the need for a brake pedal and allows the decelerator pedal to decrease engine speed and transmission speed or transmission speed only. The decelerator also offers the option to change into operating ranges best suited for specific applications. The dozers’ blade pitch can be adjusted to any angle from 52 to 60 degrees with just one wrench.
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