Mack Trucks has unveiled a heavy-duty version of its Mack mDRIVE automated manual transmission. The mDRIVE HD will be available as standard equipment on orders as of March in the Mack Granite model, offering improved performance for demanding on- and off-road applications.
The mDRIVE HD is designed and engineered to work exclusively with Mack MP7 and MP8 engines. The 12-speed mDRIVE HD has an automated clutch so no clutch pedal is required. Operation of the transmission is controlled through a dash-mounted shift pad by selecting drive, neutral, or reverse. For more demanding jobsite maneuvers, the shift pad can be operated manually to hold a gear, downshift, or upshift.
Available in overdrive and direct drive, the mDRIVE HD continuously monitors changes in grade (both up and down), vehicle speed, throttle position, acceleration, torque demand, and gross vehicle weight. It automatically chooses the best gear for the road condition, allowing drivers to focus on the terrain rather than shifting gears.
The mDRIVE HD is based on the design of the standard-duty mDRIVE, which Mack made standard in the Mack Pinnacle model in October 2014. Compared with conventional automatic transmissions, the mDRIVE HD requires less service, reducing maintenance needs.
If the mDRIVE HD requires attention, the transmission can be serviced at any Mack dealer. In addition, the mDRIVE HD is supported by Mack’s Uptime services, which reduce downtime and maximize productivity through real-time monitoring and proactive repair scheduling.
Key features of the mDRIVE HD include:
•The mDRIVE HD is lightweight. Including transmission oil, the mDRIVE HD is up to 237 pounds lighter than other transmission offerings.
•It features reinforced internal components. With stronger gears and synchros, the mDRIVE HD is built to withstand more frequent shifting.
•The mDRIVE HD uses a transmission-mounted oil cooler. This oil cooler helps maintain an optimal operating temperature, despite repeated, heat-generating shifts.
•Unique software packages specific to the customer application are available with the mDRIVE HD. The “Enhanced Construction” package provides optimal on/off-road capability and gives the driver full control over any terrain. “EZ Shift” delivers smoother shifts for sensitive payloads like livestock or bulk liquids.
•The mDRIVE HD offers a Rock Free feature. Should the vehicle become stuck, this feature allows the driver to rock the truck back and forth simply by pumping the accelerator.
•It features Grade Gripper. Working with the truck’s ABS system, Grade Gripper allows the vehicle to momentarily hold a hill, giving the driver time to move his foot from the brake to the accelerator pedal without rolling backward.