Electrical, PTO, Hydraulic Pump, Parameter Logic, Programming and more

Disclaimer: Persons who perform further manufacturing operations on (modify) a MACK vehicle are responsible for the vehicle’s continued and/or subsequent compliance with applicable regulations, must ensure that the vehicle as modified by them is safe to operate, and assume any liability related thereto. Mack Trucks, Inc. cannot anticipate all of the possible modifications to a MACK vehicle, know the ultimate configuration of every completed vehicle, and be aware of the intended function, operation and/or use of a completed vehicle. Regardless of assistance provided to subsequent manufacturers (others), Mack Trucks, Inc. is not responsible for modifications made to a MACK vehicle by others, nor the safe assembly and/or operation of any equipment installed on a MACK vehicle by them, nor for injury or damage caused by such modification and/or equipment.

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  • Latest Mack Medium Duty Manual Updates
  • Check regularly for updates to the Mack Medium Duty Body Builder Manual to learn of new features and updates.
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  • Body Builder General Information
  • Safety Regulations / Standards, Vehicle Certification, VIN / Regulatory labels, Body Installation, Hood Installation, Hood Opening Angles, Vehicle Configuration Applications, Back of Cab and Fuel Tanks.
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  • Oil + Filters
  • Approved Oils, Engine Oil Type, Lubrication, Coolant requirements
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  • Engine
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  • Electrical / Electronics
  • ISO 26262, Wiring, Routing/Clipping, Body Builder Connectors, Solenoid Pack, Liftgate, J1939, Diagnostic Connector, Multiplexing / Messaging, Road Speed Signal.
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  • Transmission
  • Lubrication Capacity, Literature, Gear Ratios, Transmission Dipstick.
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  • Brakes
  • Air Brake System / Solenoid Valves, Air Line Hose Installation, Air Tank Fittings, Air Brake Routing and Schematics
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  • Rear Wheels and Axle clearance, Axle Alignment, Rear Axle / Suspension, U‐Bolt Torque, Ride Height and Pinion Angles
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  • Cab / Body
  • Instrumentation, Switch Locations and Part Numbers, Warning Indicator Light Panel, Guage Layout, Switches (Incl PTO Speed Adjustment)
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  • PTO & Pumps
  • PTO Speed Functions, Transmission‐mounted PTO, Parameter / Programming, Regeneration in PTO

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What is the minimum RPM I should operate my PTO, so that my vehicle will perform Regeneration during PTO mode?

Regeneration in PTO Mode - when a vehicle is being operated in PTO mode and a diesel particulate filter (DPF) regeneration is commanded, the engine must be run at a speed above the minimum speeds listed in the tables in Body Builder Manual, Section 9, Table of Contents / Regeneration in PTO Mode. The minimum speed setting can be affected by ambient temperature and/or altitude.

On Mack mDRIVE, with PTO engaged while in neutral, and then selecting Drive the PTO stops turning. Why?

Remember that the m DRIVE 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.

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 m DRIVE with a REPTO or FEPTO is recommended.