![split-shift-2018-01-23-12-54](https://img.ccjdigital.com/files/base/randallreilly/all/image/2018/01/ccj.split-shift-2018-01-23-12-54.png?auto=format%2Ccompress&q=70&w=400)
Mack Trucks on Tuesday at World of Concrete in Las Vegas introduced a standard split-shaft functionality for its 12-, 13- and 14-speed mDRIVE HD automated manual transmission.
Mack Construction Product Manager Tim Wrinkle says the split-shaft functionality offers the benefits of the mDRIVE transmission to customers who need higher PTO power and torque.
Rather than taking power from an engine- or transmission-mounted PTO, split-shaft PTOs are mounted in the middle of the driveline to get output directly from the transmission, supplying more torque for auxiliary equipment.
When the split-shaft PTO is engaged, power to the axles is disconnected.
All GHG2017 F-Series mDRIVE HD AMTs can be reprogrammed with split-shaft functionality with assistance from the Mack Body Builder Support Group, allowing the transmission start in 7th thru 12th gears and shift to a desired continuous operation gear of 11th or 12th.