Cat 950M and 962M wheel loaders have Tier 4-Final Cat C7.1 ACERT engines delivering 230 and 250 horsepower, respectively, with 10 percent better fuel efficiency than K Series predecessors. Peak torque is up an average 18 percent for the new models. A five-speed Cat power-shift transmission has a lock-up clutch torque converter with lock-to-lock shifting, as well as the Cat single clutch speed shift system. Redesigned axles feature on-the-go disc-type differential locks to improve tractive ability. The main hydraulic valve is now a mono-block with an integrated ride control section. The mono-block design reduces weight, has forty percent fewer leak points and is common across all M Series models.