What effect does Improper alignment gives to the belt and pulley?
When a belt sits loose on a pulley, the belt can slip while in motion and cause extra friction. The additional friction can result in a buildup of heat on the belt and the pulley. The excess heat can cause premature damage to your belts.
What causes the serpentine belt to screech?
Serpentine belt noise means that a change in the belt’s operating conditions is causing the belt’s rubber to slip over one or more pulleys, making it screech — more on this in the What Causes Serpentine Belt Noise section below. More over, there’s the danger of the belt flying apart,…
What’s the difference between a V belt and serpentine belt?
A serpentine belt is a friction drive belt so it is made of a rubber compound that is made to stretch around the accessory pulleys and drive them purely by friction. The serpentine belt is a V-belt with grooves cut into it longitudinally that match up with grooves in the pulleys. These grooves create a greater surface area for contact.
What happens when you glaze a serpentine belt?
Glazing is easy to spot, as it will look shinier than the rest of the rubber the belt is made of. Glazing occurs as the belt passes over pulleys without placing enough tension on them to actually make them turn with the belt. If the grooves of the belt have glazed over, you’ll need to replace the belt.
Why does my serpentine belt make a squeaking noise when I start the car?
A squeaky belt can indicate several different issues. If the noise only occurs when turning, starting the engine, or accelerating, it probably is a worn or loose belt. A constant squeal may mean the tensioner system or a pulley is damaged. Diagnosing the sound is the first step in how to make a serpentine belt stop squealing.
What causes a serpentine belt to be out of alignment?
Angular misalignment—the pulley is at an angle to the other pulleys—results from worn bearings in an accessory. Belt tension on the pulley pulls the shaft off center, which puts that pulley out of alignment with the other pulleys. Pulley alignment can be checked with a straightedge. Place the straightedge across two pulley faces.
How do you replace a serpentine belt pulley?
Using the breaker bar or serpentine belt tool, move the tensioner arm against the spring as far as it will move, to its stop. The tensioner arm should move smoothly throughout its range of travel, with firm spring pressure and without binding. Most tensioner pulleys can be replaced independently of the tensioner itself.
A squeaky belt can indicate several different issues. If the noise only occurs when turning, starting the engine, or accelerating, it probably is a worn or loose belt. A constant squeal may mean the tensioner system or a pulley is damaged. Diagnosing the sound is the first step in how to make a serpentine belt stop squealing.
What causes a belt to squeak over pulleys?
Squeaking is caused because the belt is slipping over the pulleys. The slipping is caused because the belt loses ability to produce enough friction between itself and the pulleys (mostly due to material fatigue).