On-Site Magazine


Mack mDRIVE HD automated manual transmission boosts productivity

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January 11, 2017 by On-Site Magazine

Featuring a low-ratio creeper gear, the Mack mDRIVE HD 13-speed automated manual transmission (AMT) helps boost customer productivity thanks to improved performance and reduced weight. Now standard on Mack Granite models, it is available in direct or overdrive configurations, Mack mDRIVE HD 13-speed offers a low-reduction creeper gear ratio designed for easier startability on steep grades or when the truck is carrying a heavy load. This improved startability allows customers to select a faster rear axel ratio. The faster ratio decreases engine rpm at highway speeds, saving fuel as the truck travels between job sites.


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