What happens if the tensioner pulley fails?
When the tensioner or tensioner pulley fails, the loss of tension can cause the belt and pulleys to make high-pitched rattling or chirping noises. If the pulley bearing completely fails, it can also cause a squealing or even a grinding noise.
What causes tensioner to fail?
Dirt or mud can also jam the tensioner housing. A loose or worn pivot arm can allow unwanted movement; that results in belt noise and misalignment. Over time, this will increase belt wear and lead to premature belt failure. A worn bushing in the tensioner pulley can cause vibrations and noise.
Which is a symptom of a failing belt tensioner?
Unusual Belt Wear This is another symptom of a failing belt tensioner. Depending on the type of drive belt that you have in your car, then you should see even patterns throughout the length of the belt. Over time, these belts tend to wear out.
Why does the tensioner make a squeaking noise?
Since the tensioner is not able to maintain the correct tension on the belts, it produces a squealing or squeaking sound. This is most evident on the drive belts. If the noise you hear is similar to a grinding sound, then it is possible that the tensioner bearings or the tensioner pulley is the problem.
What does the pulley on a belt tensioner do?
The pulley is what allows the movement of the drive belt. The spring keeps the drive belt in its correct tension. The tensioner arm is a mechanism that allows for the adjustment or the removal of the drive belt. It delivers enough slack on the drive belt for easier adjustments. The base is what holds all the different parts together.
Why does my belt tensioner make a grinding noise?
If the noise you hear is similar to a grinding sound, then it is possible that the tensioner bearings or the tensioner pulley is the problem. These parts tend to wear out. This is what causes the grinding noise since the metal parts will be rubbing against each other. This is another symptom of a failing belt tensioner.