Patent ID: 7641007

Claim:
A track system for a multi-track work vehicle, comprising: a track having a first side and a second side; a first idle roller engaging the first side of the track; a second idle roller engaging the first side of the track; a drive wheel engaging the first side of the track, the second side of the track engaging the ground between at least two of the first idle roller, the second idle roller and the drive wheel; a biasing hydraulic cylinder, the biasing hydraulic shifting a load from a weight of the vehicle toward at least one of the first and second idle rollers when the actuator is activated; and a hydraulic circuit, the hydraulic circuit including a hydraulic pump, a pressure reducing valve having a first valve position and a second valve position, a pressure relief valve, an accumulator, a controller and a switch control, the switch control having a first switch position and a second switch position, the hydraulic circuit controlling the hydraulic cylinder by controlling a flow of pressurized hydraulic fluid to the biasing hydraulic cylinder.