Abstract: A diagnostic system for a motor grader with a blade, a drawbar member, and a center shift mounting member associated with a drawbar-circle-moldboard (DCM) includes actuators connecting the blade to the DCM and interconnecting other components of the motor grader. The actuators affect movement of the blade relative to the DCM and affect movement of the other interconnected components relative to each other. Sensors generate signals indicative of a current position of the blade and positions of the other components of the motor grader. An input device receives an operator input indicative of a selection of predefined, diagnostic positions that can be checked visually by the operator for confirmation of proper operation. A controller selectively actuates the actuators based on the selection of a diagnostic position and a signal indicative of the current position of the blade to move the blade and other components of the motor grader into the selected diagnostic position.

Abstract: An apparatus for coupling a trailer to a transporting vehicle is provided. The apparatus has a trailer assembly coupled to a hitch assembly. The trailer assembly has a skid plate having a cam channel formed therein and a cam arm having a cam member wherein the cam member engages and is movable within the cam channel. A hitch bar pivotally connects the hitch assembly to the trailer assembly. The trailer assembly is slidable in a longitudinal direction with respect to the hitch assembly such that the trailer is movable toward and away from the towing vehicle. To this end, the hitch assembly is mountable in a stationary position with respect to the vehicle and the trailer assembly is movable away from the transporting vehicle.