There are three types of belts that power the parts in your car, pickup, SUV, or van. A timing belt links the crankshaft to the camshaft, syncing the movement of the valves and pistons. Next, we have serpentine belts, which run off the idler pulley, tensioner, and crank pulley to move parts like the alternator. Finally, there are a number of drive belts in place help to run such parts as your water pump.

What Pulleys Do

First, a crank pulley attaches to the crankshaft. That drives other pulleys, which in turn power the movement of the belts. A specific type of pulley known as a tensioner is responsible for ensuring that the belts maintain an ideal level of tension.

What Brackets Do

Brackets help to keep belts and pulleys securely in place even as you travel over the roughest of roads.

How Do You Spot Problems With Your Belts, Pulleys, or Brackets?

Signs of trouble include:

Fraying belt material
Your engine stops running -- a sure indication of timing belt issues
You notice broken or cracked belt material
Belts are either too loose or too tight

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