Allison 5 Speed Automatic Transmission, Mercedes-Benz Diesel Carrier Engine, EKS 4 Load Moment Indicator, Diesel Upper Engine, 44 ft Minimum 197 ft Maximum Boom Length, 42 ft to 124 ft Swingaway Hydraulic Offset Jib, 1800 lb 70 lb Capacity McKissick 3 Sheave Hook Block, 138000 lb Counterweight, Counterweight Removal System