Q: What is the importance of the serpentine drive belt in the overall operation of the engine and accessories?
A: Locate and study the serpentine drive belt. This rubberized belt is prone to breakages following long periods of service, and as such, it should be checked on a regular basis. Find the drive belt at the front of the engine with the engine off. Feel along this belt and check for any cracks in between plies. Replace belts that are worn out. Inspect for fraying and glazing which gives a shiny look on it. The other side of the belt also has to be checked hence twisting it over is necessary. Examine these pulleys for cracks, nicks, corrosion or distortions. Check that all ribs under the belt are uniform and are of similar depth without any unevenness along its surface. A tensioner regulates the tension on this belt; therefore, no adjustment is necessary. Turn the tensioner counterclockwise using a breaker bar and socket to rotate it when replacing the belt. This will release tension so that you can take off your old belt easily. Release pressure slowly from tensioner after moving aside your old brasiliensis so as not to damage them. Take with you an old used one to compare it directly with what you buy in terms of length, design and width. Ensure that it runs correctly during installation of the new one too. Furthermore, each groove in the pulleys must be entirely filled by this type of tract.