Mack Adds Split-Shaft Function for mDrive HD AMT

Mack mDriveHD automated manual transmission
Mack mDrive HD automated manual transmission. (Mack Trucks via YouTube)

Mack Trucks introduced split-shaft functionality for its Mack mDRIVE HD automated manual transmission to provide customers with high-demand power takeoff.

Instead of taking power from an engine- or transmission-mounted PTO application, split-shaft PTO applications are mounted in the middle of the driveline to receive output directly from the transmission, supplying more torque for auxiliary equipment such as large concrete pumps, vacuum body or high-pressure liquid transfer applications, according to the Greensboro, N.C. -based company.

While the split-shaft PTO is engaged, power to the axles is disconnected. The split-shaft functionality is standard on all 12-, 13- and 14-speed mDRIVE HD AMTs and can be activated by a Mack dealer.

Mack said PTO is a function to maintain engine speed regardless of engine load. It is most often used to provide increased steady engine speed when operating auxiliary equipment such as hydraulic pumps or compressors.

Mack is a unit of Volvo Group.