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![]() ![]() ![]() When this happens, the walls of the groove are no longer gripping the pulley and it slips. When the grooves become too shallow, the pulleys bottom out. Over time, small debris and the interaction with the pulleys will wear the shoulders and valleys of the grooves. The primary cause of slipping is material being removed from the belt’s grooves, not belt stretching. When a stretch belt exceeds wear specifications, it’s no longer able to effectively grip the pulleys and will start slipping. This is why inspection is recommended - you cannot simply go by mileage recommendations. Stretch belts can last 100,000 miles or more, but this can vary dramatically depending on the vehicle’s environment and where it is mounted. Most import nameplate vehicles started using stretch belts in 2009, including Mazda, Subaru and Toyota. Ford also uses stretch belts to turn the camshaft driven water pump on the 3.0 V6. Ford has been using stretch belts to turn the power steering pump on the 3.5 V6 since 2007. GM started to use stretch belts to power the air conditioning compressor on 2009 models powered by the LS V8. These types of belts typically are used to drive the water pump, A/C compressor or power steering pump. Some OE belts will have the words “stretchy” or “stretch” written on the back. If you see a belt on a late-model vehicle that does not have an automatic tensioner and runs between just two or three components, it’s probably a stretch belt. More stretch belts are hitting the market and may become the belt of choice as accessory drive components are removed from the front of the engine. Less belt means less tension with fewer noise and vibration problems. Have your vehicle hoses and accompanying clamps inspected twice a year.Stretch belts can take loads off of the main accessory belt drive, allow for better packaging and solve NVH problems that can occur with a longer serpentine belt. Tiny cracks can form from the inside, eventually leading to a burst hose and an overheated engine. Hoses provide a flexible connection for coolant flow between the engine, radiator, engine and heating block. In addition, some cars have a bypass hose. HosesĬoolant hoses include the upper and lower radiator hoses plus heater hoses. Therefore, it’s recommended to change your serpentine belt before this mileage. Studies have shown that serpentine belts often fail between 57,000 and 87,000 kilometres (or 36,000 to 50,000 miles). Warning sounds include a screeching noise from your engine, especially during start-ups on cold mornings or sharp turns. Like the timing belt, we recommend having your serpentine belt inspected every time your oil changes. Silvhorn Automotive technicians look for cracks, wear, and stripping to determine if your serpentine belt is in danger of failing. If your vehicle’s serpentine belt breaks, all of the engine parts it is powering will stop working, and your engine could overheat and be damaged. Serpentine belts, also known as drive belts, provide power to the air conditioning compressor, power steering pump, cooling fan, air injection pump, and more. Typically, timing belts should be replaced every 60,000 to 86,000 kilometres (or 50,000 to 60,000 thousand miles). This indicates a slipped belt.ĭuring the inspection of your timing belt, Silvhorn Automotive technicians will look for cracks or stripping that indicate it’s time for belt replacement. Warning sounds include a slapping noise coming from your engine. If the belt is loose or has slipped, the valves could open at the wrong time and be struck by your engine’s pistons. That’s why it’s crucial to have your timing belt regularly inspected. If your timing belt breaks, your engine will stop working and can cause significant engine damage. The camshaft opens and closes the valves in synchronized movement with the engine’s pistons. A timing belt is sometimes called a Gilmer belt or a camshaft drive belt. The timing belt is a notched rubber belt that allows the crankshaft to turn the camshaft. Silvhorn Automotive offers maintenance to a variety of vehicle belts and hoses. ![]()
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