Mack delivers powerful engine brake for ASET engines

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LOUISVILLE, KY — Mack’s newly introduced PowerLeash brake is an integrated engine brake available for the truck maker’s Application Specific Engine Technology (ASET) engines.

Mack said the design integrates the PowerLeash brake within the base engine envelope, saving 50 pounds over other engine brakes.

“Over half of Mack’s customers spec an engine brake in their truck purchases today, and we expect that figure to grow as drivers become aware of the PowerLeash brake and its improved vehicle control,” said Tom Kelly, vice-president, marketing.

Mack says a major advantage of the new product is improved performance throughout the engine operating range, reaching 420 braking horsepower at 2100 rpm. It claims the PowerLeash can deliver a 50% reduction in brake response time.

The PowerLeash’s adjusting screw and actuator pin are designed as separate, solid pieces to resist wear. And internal oil screen provides an additional layer of protection from any particles in the oil, while electrical components are on the cold side of the engine away from heat sources.

To make service easier, the PowerLeash has been designed in a way that allows the injectors to be serviced without removing the rocker shaft and the valve lash is easy to set.

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