Serpentine Belt & Tensioner Pulley

Serpentine Belt

You know that long belt that snakes around the front of your engine? It’s call the serpentine belt and its powered by the engine as it turns. It powers your alternator, air conditioning compressor and power steering pump. On some vehicles it also runs the water pump, radiator fan and power brakes.

If your serpentine belt were to break, your battery would die within a few miles. If it runs your fan or water pump, your engine could overheat and steering and braking could become very difficult.

The best thing to do is to replace the serpentine belt before in breaks. Your owners manual recommends regular serpentine belt inspection, just ask your service advisor at OKC Garage in Edmond.

You may have been told to look for cracks in your belt to see if it needs to be replaced. But modern belts don’t show cracks like they once did. Worn belts rarely show visible signs of ware. What we look for these days is where the belt rides over the grooves of the pulleys. Your technician at OKC Garage has a special tool that measures the depth of the grooves in the belt to determine whether or not it needs to be replaced. A worn belt can slip or become misaligned, causing added stress on other vital engine components.

Tensioner Pulley

As you may know, it is important for the belt(s) to be tight, so there is a tensioner pulley on your engine that puts pressure on the belt(s) to keep it at the right tension. If the belt is too loose, it will slip, causing performance issues with the accessories. The spring on the tensioner wares out over time, so we check the tensioner pulley when we replace the serpentine belt. If the pulley in worn, then we replace the tensioner along with the belt.

Having your serpentine belt and tensioner pulley replaced when needed will keep you from experiencing an unwanted break down.