If the pulley bearing completely fails, it can also cause a squealing or even a grinding noise. 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. Symptom 1: Squealing, rattling, or chirping. When a timing belt tensioner fails, it can result in a number of different symptoms. There are two main types of belt tensioners. As the belt stretches it can become loose, so the tensioner needs to adjust the belt as needed to keep it tight. Over time, due to age and heat, the belt will stretch out. The timing belt is a rubber belt that runs over and through a series of pulleys and gears. The timing belt tensioner is used to do just that - keep tension on the timing belt. Part 1 of 6: Purpose of the belt tensioner Knowing some of the signs of a bad belt tensioner can help you to prevent serious engine damage due to a timing belt failure. If the tensioner is bad, it can cause the belt to come loose or cause the pulley to seize, making the belt come off. One other common problem is the belt tensioner. The belt can break due to a number of reasons, but the most common is age. Check out our wide variety of belt sizes and styles or give us a call at 86.The timing belt is a critical part of the automotive engine if it breaks, it can cause some serious damage. Unlike rubber, it holds up very well to fluctuations in temperature. While urethane has some similarities to rubber, it is much more resistant to abrasion, water, oil, and oxidation. Next time a client needs a timing belt replacement, consider using a urethane belt from Texas Belting and Supply instead of a rubber one. It’s also a sign whenever the exterior drive belts start to crack. In addition to the mileage recommendation from the manufacturer, you can assume it’s time to replace a timing belt whenever you see the oil seals from behind the timing cover start to leak onto the belt, which can cause it to break down. A car can’t run without a timing belt, so any driver who experiences a sudden breakage will be stranded. When your clients know the causes of timing belt failure, hopefully they can make it in for a routine repair before it becomes a serious problem. When the tensioner begins to wear, it can actually damage the belt and hasten the need for a replacement. Worn Hydraulic TensionerĮvery rubber timing belt has a tensioner that keeps the belt taut and increases the accuracy of the engine shafts. Unfortunately, this includes the timing belt. If your client has a car that they haven’t driven in a long time, there’s a good chance any rubber parts are going to be dried out. While use is eventually what causes rubber to break down, it’s also what keeps it flexible. To help remind car owners to get their timing belts replaced, most manufacturers will recommend a replacement time based on car mileage, but these number are only an estimate. Most timing belts are made from rubber, which has a limited life expectancy. Old AgeĬontrary to what most people think, it’s not the mileage that determines when you need to replace a timing belt, but the belt’s age. When the belt fails, the engine parts are no longer in harmony, and both the valve and the piston can take damage. The timing belt is what keeps the crankshaft and camshaft in sync with each other, ensuring that the engine’s intake valve and pistons do not run into one another. Knowing the causes of timing belt failure can help your clients avoid this expensive repair job. Additionally, when a timing belt breaks, there are probably several other parts that will need replacing as well. Because of the timing belt’s location, the diagnosis is a time-consuming process. Timing belt failure is one of the most dreaded car maintenance issues, and for good reason.
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