JCB JS Auto excavators

JCB exchanged six-cylinder Isuzu engines for a new four-cylinder diesel from the supplier to bring its JS Auto excavators into compliance with Tier 3 emissions regulations. The smaller engines – with exhaust gas recirculation, intake-air cooler, and electronic governor – deliver up to 25 percent more horsepower and torque than their predecessors, and use up to12 percent less fuel. The eleven new tracked and four new wheeled models range in size from 14 to 26 tons (30,800 to 57,200 pounds).