MACK MP7, MP8 Service Manual

Mack®MP™Engine Series MP7 & MP8

Blowing away the competition.

The all-new MP7 and MP8 engines, the latest members of the Mack®MP™Engine Series, draw on proven technology to boost power and run cleaner. These engines meet the strict emissions requirements of the EPA for 2007. Engineered with the power, torque and durability you have come to expect from the industry’s leader in integrated powertrains, the MP7 and MP8 engines are versatile enough to cover all highway and vocational applications.

A powerful addition to the family.

The MP8 engine has the highest horsepower with the lowest emissions ever offered by Mack. The 13-liter MP8 has a horsepower range from 415 HP to 485 HP and torque levels from 1,540–1,700 lb.-ft. The 11-liter MP7 engine possesses a horsepower range from 325 HP to 405 HP and torque ratings from 1,200–1,560 lb.-ft.
Minor adjustments make a major improvement.
The new MP7 and MP8 engines boast a few improvements from their predecessor, the US’04-compliant MP7.The most significant is the redesigned Exhaust Gas Recirculation (EGR) Cooler, which now utilizes a tube-and-insert configuration for even more efficient cooling. These engines deliver the same performance and reliability of the previous MP7, which has been road-tested and respected by drivers for more than two years.

Meeting the Mack standard.

Engineered to perform to legendary standards, these new MP engines live up to the indisputable reputation of durability and dependability that Mack has delivered on for more than a century. These state-of-the-art engines feature single overhead cams and ultra-high-pressure fuel injection. The electronically controlled Variable Geometry Turbocharger incorporates the latest technology to cool both the turbo and actuator. It is designed with fewer parts, has one-piece steel pistons, and stronger bearings and cylinder heads, giving operators a powerplant built to last.

Log more miles with less stops.

These new engines remain true to the MP Engine Series, which was introduced with improvements to the injection and air management system to achieve better fuel economy. Fuel economy is expected to increase by approximately 3 percent for highway and 6 percent for vocational use.

An engine brake powerful enough to stop a Mack.

Mack’s engine brake, PowerLeash,™is ideal for operation in the new MP7 and MP8 engines. It is every bit as durable, powerful and reliable as a Mack truck itself. It provides more braking horsepower through mid-RPM ranges, and weighs less than other engine brakes.

Pound-for-pound, these engines deliver.

All the power you need, without an ounce of additional weight. The 11-liter MP7 engine is a lightweight and compact package. It is 37 pounds lighter than previous Mack vocational engines and 153 pounds lighter than previous Mack highway engines.

Engineered for Ultra Low Sulfur Diesel (ULSD).

The all-new MP7 and MP8 engines have been designed, developed and tested using ULSD, which uses only 15 ppm (parts per million) sulfur. These engines will not meet the emission standards using pre-2007, 500 ppm diesel fuel. The ULSD fuel must be used in all US’07-compliant engines that use a catalyzed DPF or the catalyst will be poisoned. Improper fueling will reduce its effectiveness for regeneration and potentially require more frequent filter service or replacement of the catalyst. Any emission control system component damage due to improper fueling will not be covered under the Mack engine warranty.
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