Mack 13-Speed Automated Manual Transmission Now Standard on Granite Models
Mack Trucks said its mDrive HD 13-speed automated manual transmission will be standard on Granite models.
Mack, a unit of Volvo Group, is the first truck manufacturer in North America to offer low-reduction creeper gear ratios in a proprietary automated manual transmission, according to the truck maker.
“Since its introduction, the mDrive has become incredibly popular, starting first with highway and more recently with many heavy-duty vocational applications, Mack Trucks President Dennis Slagle said in a statement. "The introduction of the 13- and 14-speed gears expands the range and performance in vocational applications so much so that it is only natural for it to become our standard offering in the Granite model."
Mack announced in March the availability of the mDrive HD 14-speed transmission.
Greensboro, North Carolina-based Mack said the 13-speed transmission is available in direct or overdrive configurations and offers a low-reduction creeper gear ratio designed for easier starts on steep grades or when the truck is carrying a heavy load. The feature also allows customers to select a faster rear axle ratio. The faster ratio decreases engine rpm at highway speeds, saving fuel as the truck travels between job sites, the OEM said.
