How to Install a Serpentine Belt

The serpentine belt on an automobile serves numerous functions a car can't do without.  It keeps the battery charged, cools the engine, makes steering turn easily, and keeps the electronic parts going. If the serpentine belt starts to go, it is important to change it quickly. Otherwise, you may find yourself stranded.

Installing the serpentine belt:

• Look under the hood to see if there is a belt-routing diagram. This is usually on the fenders or radiator support. If no diagram exists, draw the belt routing and pulleys so you'll remember the location when putting in the new belt.


• Using a wrench, loosen the belt tensioner. This releases tension so you can remove the existing serpentine belt.


• Inspect the pulleys by moving each one back and forth, then spinning them. If they are loose, the pulley bearing is bad. If this is the case, you will also have to replace the assembly.


• After removing the belt, check to make sure how many ribs your serpentine belt has (four or five). Make sure the replacement has the same number.


• Place the new belt back in its location, making sure that it fits completely in the grooves. If it does not fit, it will not work properly, which will effect how your motor runs. It will also eventually tear off or snap, which will stop your vehicle altogether.