Machine description: Air Conditioner, Anti Two-Block, 878 hrs Crane Operation, Cummins 6 Cylinder 5.9 L Diesel Engine, 28 ft Minimum 70 ft Maximum Boom Length, 23 ft to 23 ft Jib, 22 ton Capacity 3 Sheave Hook Block, 150 ... more info about the 1991 Grove RT58D.