Parker Hannifin Corporation’s series of economical lift axle control panels enable truck operators to raise and lower an auxiliary axle on vehicles to accommodate heavy loads. The modules can be used within truck cabs or externally mounted on dump trucks or trailers, and are available in steer or non-steer versions. The panels offer color-coded connections for ease-of-use, and the air system maintains a high flow rate to ensure rapid raising and lowering of the lift axle.