How to Install a Belt Auto Tensioner

If you'd like to save some money on car repairs but don't have a lot of experience, start with small repair jobs. Installing a belt auto tensioner, which is responsible for keeping adequate tension in a car's serpentine belt, is located under and between the pump for power steering and the alternator. It is a straightforward job that even the most inexperienced person can handle.

Difficulty: Moderate

Instructions

Things You'll Need:

• Bolt head or square hole wrench

1. Locate the belt auto tensioner, which is positioned both under and between the power steering pump and alternator.

2. Take a bolt head or square hole wrench, secure it on the idler pulley and turn the wrench clockwise. This loosens the tension and gives you room to get on the first part of the belt.

3. Slip one end of the belt onto the lower pulley. Make sure the belt is properly routed on the lower pulley before continuing.

4. Rotate the auto tensioner. This loosens the belt and gives you some working room. Once you have determined there is enough slack for you to continue working, place the other end of the belt on the top pulley.

5. Examine all of the pulleys and make sure the belt is centered. If you are sure there are no ribs exposed and the pulley is not hanging over, remove the tension from the belt with your auto tensioner.

Tips & Warnings

• Make sure that your vehicle is turned off and the engine is cool to the touch before beginning any auto repair work.