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VIDEO: Serpentine Belts: What Are They Made Of?

Andrew Markel discusses the construction of a serpentine belt, and how each of its layers contributes to its structural integrity and longevity on an engine.

Hyundai 1.6-2.4L Tech Tip: Belts

Check the weights on the shafts before installing belts.

VIDEO: The Science Of Stretch Belts

Andrew Markel talks stretch belts, and how they manage to keep working without a tensioner.

VIDEO: Consider Mileage And Age On Timing Belts

Andrew Markel discusses timing belt replacement, and how service life must not only be measured in mileage, but also the age of the belt.

Six Tools For Servicing Serpentine Belts

Servicing the serpentine belt on some vehicles is a tough task. Without the right tools it is almost impossible. Here are six tools to make your next belt replacement more productive.

VIDEO: Inspecting Worn Subaru Stretch Belts

Andrew Markel discusses stretch belts on Subaru vehicles and how to inspect when they are worn.

Serpentine Belts: Inspecting And Replacing

A technician’s senses are often the most valuable tools in helping assess what repair or replacement parts are needed on a given job. Specifically, the ability to visually inspect parts for wear and tear to know when it’s time for replacement is the calling card of any successful technician. But when it comes to modern serpentine belts, you can’t trust your eyes anymore to tell you when it’s time for a new belt.

Accessory Belts, Tensioners And Misfires: A Balancing Act

On an engineering level, the design of the accessory belt drive is a balancing act of efficiency, force and vibration. The more contact or wrap a belt has with a pulley, the more force or energy can be transmitted without slipping and the less tension the belt will need. But, this is not great for efficiency because it creates more friction and drag.

Stretch Belts: Inspection And Installation

Why stretch belts? For the more than two decades, automakers have consolidated accessory drive components onto one belt. It worked for most engines, but for some it presented issues with noise and vibration as the A/C compressor engaged.

Practical Tips for Timing Belts

Changing the belt correctly – for 100% drive function.