![]() Other warning signs of a bad serpentine belt include missing chunks from the belt ribs, frayed fan belt fabric, glazing on the belt’s back, or debris between the belt teeth or ribs. ![]() If the drive belt of your car has multiple cracks on adjacent belt ribs within an inch or has more than four cracks per inch on a single rib, you’ll need a belt replacement. Separated belt grooves or ribs also indicate a misaligned serpentine belt. They’ll look for any disintegration along the edges. The mechanic will remove the old belt off any smooth pulley, then release the tensioner.Īfter removing the old belt, the mechanic will do a visual inspection for any signs of damage.The mechanic will then slowly rotate the tensioner arm as far as it can go.They can snap a socket on the hex-shaped nut on the pulley itself. If a serpentine belt tool isn’t available, a long-handled ratchet or breaker bar with an assortment of sockets could also work. They’ll place the serpentine belt tool into the square-shaped ½ inch or ⅜ inch drive opening.To remove the serpentine belt, your mechanic needs to loosen the tensioner pulley first. If the pulley exhibits a jerky vibration, the belt vibrates, or if the tensioner arm moves more than ¼ inch, it’s a symptom of a faulty belt tensioner. A properly tensioned belt should also run smoothly around the tensioner with no visible vibration. The tensioner pulley is what maintains the belt tension around the pulleys for engine accessories.Ī well-functioning tensioner should have a slight vibration. If you already have a loose belt that’s out of place, the mechanic can look for the belt routing in the driver’s manual.īefore removing the worn serpentine belt, the mechanic will check the belt tensioner for any excess vibration.The mechanic may take a few snapshots or sketch how the old belt winds around different pulleys, such as the idler pulley and the belt tensioner.The belt path a serpentine belt weaves through is unique to each car. Here’re the details on the serpentine belt replacement process: Step 1: Note The Placement Of The Belt A serpentine belt tool, a ratchet, or a breaker bar.To begin with, a serpentine belt replacement needs: If you do have the tools and knowledge, here’s what you need to do to replace a worn serpentine belt: However, if you aren’t sure how to do the belt replacement yourself, it’s best to call a serpentine belt replacement service where an ASE-certified mechanic can do the job for you. Performing a serpentine belt replacement on your own isn’t impossible if you have the right tools and technical know-how. How To Perform A Serpentine Belt Replacement
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