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HD 101

Get to know the core systems and components that power commercial vehicles with HD 101 articles. These easy-to-understand guides explain how key parts work – and how they help your heavy-duty vehicle perform at its best.

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Signs of a Failing Turbocharger

Turbochargers are designed to force more air into the engine to improve mileage and horsepower, learn how to recognize the signs of a failing turbocharger.

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