John Deere has added an Interim Tier 4 (IT4) engine option for its 744K 4WD loader. The John Deere PowerTech 9.0-L IT4 diesel engine uses cooled exhaust gas recirculation technology to meet emissions regulations while producing 304 hp.
In less than six months, the U.S. Environmental Protection Agency (EPA) Interim Tier 4 emission standards will go into effect for many types of off-road diesel powered equipment used in underground construction, and equipment owners and operators are devoting increasing attention to the changes they will bring.
The 60D and mid-sized 85D join the D-Series excavators. Both excavators feature reduced tail-swing designs that allow them to rotate freely within a small radius and get closer to objects on congested jobsites.
Contractors and other operators of off road, diesel powered equipment are encountering a growing number of public construction projects that require retrofits of diesel engines powering older equipment.