Mack adds two new mDrive HD models

Mack adds two new mDrive HD models

Mack Trucks has announced two new versions of its Mack mDrive HD automated manual transmission (AMT). Available in direct or overdrive configurations, the new Mack mDrive HD 13- speed offers a low reduction gear ratio designed for easier starting on steep grades or when the truck is under heavy load, according to the company. The Mack mDrive HD 14-speed, available only in an overdrive configuration, adds a second ultra-low-speed reduction gear designed for curb pouring applications or low-speed, heavy-haul maneuvering. Both transmissions offer up to four reverse gear ratios.

The new Mack mDrive HD models share their architecture with the standard mDrive HD, including reinforced internal components and the same gear ratios for the 12 forward speeds. The addition of the low reduction and multispeed reverse gears is made possible by a short extension added to the front of the transmission case. The new mDrive HD models are less than five inches longer and 90 lbs. heavier than the standard mDrive HD, maintaining a weight advantage of nearly 150 lbs. compared with automatic transmissions, the company said.

For the first time, fleets will also now have the option to spec the mDrive HD in Mack Pinnacle models, including the new mDrive 13- and 14-speed models. The new low reduction gears not only improve performance in off-road, heavy haul and construction applications, they enable as well the use of a faster rear axle ratio to improve on-road fuel economy while maintaining startability.

In addition to the two new models, all Mack mDrive transmissions, including the standard mDrive and mDrive HD, also received numerous updates for improved performance and durability. The transmissions are controlled by a redesigned gearbox control unit, while a new clutch with a larger torsional damper helps reduce driveline vibration. Component wear monitors were also added to enable predictive maintenance.

Mack also extended warranty coverage on all mDrive transmissions and clutches used in heavy- or severe- duty applications. Warranty coverage now extends to 36 months with unlimited miles for heavy-duty applications for both the mDrive and mDrive HD. For severe-duty applications, warranty coverage is extended to 12 months and unlimited miles for the mDrive, and 24 months, unlimited miles for the mDrive HD. The mDrive updates also included several improvements to power take-off (PTO) controls, including new main cab harnesses for all mDrive models, a reinforced range housing to handle higher PTO bending torque and an all-new cab-mounted Body Builder Module.

You May Also Like

NTEA adds new MVP members

NTEA says the program acknowledges “companies leading the industry to excellence.”

NTEA-logo-work-truck-association

Two first-time names have been added to the NTEA's Member Verification Program (MVP) list, this year. They're joining 15 companies renewing their status, as well as the 220-plus total members currently on the MVP list. NTEA is issuing congratulations to all members, saying: "Fleet managers, truck dealers and OEMs know truck equipment manufacturers and distributors with MVP status have implemented specific business and quality standards and comply with federal regulations."

Conversations that lead fleets down EV roads

How the transition to electric trucks is reshaping commercial operations with insights on adapting to new technologies.

EV-Fleet-Road-Map-2-Electrification-Needs-1400
Fleet profile: UPS shares results of strong investment in alternative fuel

The package delivery giant is on its way to achieving 100% carbon neutrality by 2050.

UPS-EV
PRT launches new complete strut assemblies

The line includes light-duty and pickup truck applications.

PRT-Strut-1400
Merchants Fleet to offer Chevy Silverado EV for lease and rental

Merchants Fleet says it will offer potential clients help with electrification, consulting, and charging infrastructure.

Merchants-Fleet-chevy- Silverado-EV

Other Posts

Work Truck Week to include announcements from Mack, Ford, Ram, and more

New EVs and internal combustion commercial trucks and vans are slated to be on the blue carpet at Work Truck Week 2024.

NTEA_WorkTruckWeek2024_logo-1400
Mack Trucks President kicks off Heavy Duty Aftermarket Dialogue

Jonathan Randall sees a strong 2024 ahead, with a few caveats.

Heavy-Duty-Dialogue-Mack-Trucks-President-1400
Mullen seeks $50M from DOE battery grant

The funding would support U.S. battery production and a new facility in California.

Mullen-EV-DOE-grant-submission
Interested in commercial EVs? Here’s how to pick a partner

Navistar talks making the zero-emission electric vehicle transition, addressing range anxiety and adoption challenges.

Navistar-EV-Road-Map-Podcast-Episode-1-1400