Abstract: A rear wheel drive assist for a wheel tractor scraper, the wheel tractor scraper having a tractor portion with a power source operatively connected to the front driven wheels, and a rear, scraper portion having a bowl, work tool, and first and second rear wheels, the rear wheel drive assist includes a work tool pump fluidly connected to a work tool motor to drive the work tool, fluid operated drive motors operatively connected to the rear wheels, and a diverter valve selectively movable between a first position that delivers fluid flow from the pump to the work tool motor, and a second position that delivers fluid flow from the work tool pump to the rear wheel drive motors.

Abstract: A rear wheel drive assist for a wheel tractor scraper, the wheel tractor scraper having a tractor portion with a power source operatively connected to the front driven wheels, and a rear, scraper portion having a bowl, work tool, and first and second rear wheels, the rear wheel drive assist includes a work tool pump fluidly connected to a work tool motor to drive the work tool, fluid operated drive motors operatively connected to the rear wheels, and a diverter valve selectively movable between a first position that delivers fluid flow from the pump to the work tool motor, and a second position that delivers fluid flow from the work tool pump to the rear wheel drive motors.

Abstract: A method of modulating a boom assembly to perform in a linear manner. The boom assembly includes a boom and a stick. The method comprising the steps of sending at least one lever signal to a control device indicative of operator desired direction and desired velocity of the boom and the stick, calibrating the lever signals to provide a boom command signal and a stick command signal, applying an algorithm-to-the boom command signal and the stick command signal, which the algorithm uses command signal mapping, and providing a modulating factor to the control device as a result of the algorithm.