I'm hoping someone can help me. My serpentine belt snapped the other day while driving. I picked up a new belt today, but for the life of me can't figure out how to loosen the belt tensioner. I would appreciate any advice with picture if possible.
These belt tensioners are typically spring-loaded. There should be a hole on the tensioner, where you can insert a 1/2 inch square socket-drive, or an allen key, which is used to rotate the tensioner against the spring, so you can slip the belt on, and then slowly release the spring tension against the new belt.