The Caterpillar 966M is a medium-duty wheel loader powered by a Cat C9.3 ACERT engine delivering 276 net horsepower and 206 kilowatts. This versatile machine features an operating weight of 51,176 pounds (23,213 kg) in standard configuration, with bucket capacities ranging from 4.19 to 9.68 cubic yards (3 to 7 cubic meters). The loader is equipped with a four-speed transmission offering forward speeds up to 24.5 mph and reverse speeds matching forward capability for enhanced operational flexibility. Its dump clearance at maximum raise reaches 9.75 feet, facilitating efficient material discharge into trucks or stockpiles. The 966M delivers 1,599 newton-meters of peak gross torque at 1,200 rpm, providing robust breakout force for demanding loading applications. A High Lift variant is available, offering increased dump clearance of 11.58 feet with operational weight reaching 54,729 pounds (24,825 kg), accommodating larger discharge requirements. Ground clearance of 1.5 feet ensures adequate undercarriage protection in rough terrain. The machine incorporates Caterpillar's load-sensing hydraulic system with variable displacement piston pump for optimal control and efficiency during operation. Its Tier 4 compliance engine provides improved fuel efficiency approximately 10 percent better than previous K-series models, while the best-in-class operator environment features advanced ergonomics for enhanced productivity and reduced operator fatigue during extended shifts.