Patent ID: 7954583

Claim:
An agricultural harvester rear axle arrangement for an agricultural harvester ( 10 ) having a body ( 12 ), the arrangement comprising left and right rear wheels ( 18 , 20 ); means for supporting the wheels for rotation about a generally vertical steering axis ( 38 , 40 , 78 , 94 ) and for supporting the wheels for extension and retraction from the body of the combine ( 26 , 28 , 30 , 90 ); actuator means for steering the wheels ( 38 , 40 , 70 , 72 , 94 ) and for extending and retracting the wheels ( 34 , 36 , 70 , 72 ); an electronic controller ( 50 ) coupled to the actuator means to steer, extend and retract the wheels; and an operator input device ( 54 ) that provides a signal indicative of a desired steering angle, and further wherein the electronic controller ( 50 ) is configured to calculate a desired degree of extension for the desired steering angle based at least upon the signal indicative of the desired steering angle; and to substantially simultaneously steer the left and right rear wheels ( 18 , 20 ) to the desired angle and extend the left and right rear wheels ( 18 , 20 ) to the desired degree of extension.