From Earth Movers
The Lorenz Earth Mover is available in two models - the L8600 and L10800. They are the push-off type, with double acting hydraulics. The front axle is mounted to a heavy duty swivel with stress proof pins. All axle spindles are bolted in place for easy removal. The hydraulic cylinders are heavy duty and well protected. The cutting edges are reversible and replaceable. The center section cutting edge is larger for better heaping during loading. The pivot arms and brackets are made from heavy plate to withstand heavy use.
The dual hydraulics is very helpful with tractors with only dual spools. One spool is used to raise and lower the tank, and the other spool controls the gate and pushoff. As the gate reaches its full open position, the hydraulic pressure is transferred to the pushoff cylinder with a sequencing valve. After unloading, the pushoff is retracted and hydraulic pressure returns to the gate cylinders, closing the gate.