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Mack Trucks

Mack Introduces Rolling Start for F-Series mDrive transmissions

This new feature is desirable in Paving applications and allows the operator to go directly from Neutral to Drive without a service brake application.

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Mack Trucks

Concrete Pumper Support / Mack Body Builder Support to attend 2017 World of Concrete

Please plan to visit us in Mack booth #C-5103 of the Las Vegas Convention Center – Central Hall.

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Mack Trucks

Mack Adds More Technical Resources to Body Builder Support

As the leading manufacturer of vocational trucks, Mack Trucks has a wealth of information and resources available to body builders, to ensure efficient, reliable and high-quality truck body installation and operation.

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Frequently Asked Questions

On Mack mDrive, with PTO engaged while in neutral, and then selecting Drive the PTO stops turning. Why?
Remember that the mDrive is an automated manual transmission with a clutch. With the PTO engaged while in neutral, when selecting Drive, the clutch is released, then the transmission shifts into gear. When the driver takes his foot off the brake pedal and presses the throttle pedal the clutch will reengage and the PTO will start to turn again. The transmission will not shift gears and driver is limited to about 6 MPH.
Our customer chassis has an mDrive and has a need for moving PTO operation. What PTO is recommended?
Transmission mounted PTO’s are primarily used for stand-still operation, with the gearbox in neutral. However it is possible to engage PTO in vehicle speeds up to 6 MPH. If the vehicle is to have a moving PTO operation, an mDrive with a REPTO or FEPTO is recommended.
What is the procedure for operating an mDrive mounted PTO?
Manually place the transmission in the desired PTO operating range (N1/N2) while stationary. Do not shift the range with the PTO engaged, or damage may occur. Engage the PTO also while stationary. Move the vehicle up to the operational speed which can vary slightly, based on rear axle ratio, drive tire size, engine RPM and transmission gear selected.