Tops tips on fitting Poly-V belts from FAI

For some mechanics, installing a serpentine belt can seem to take forever. Here, Michael Dieckmann, Goodyear Product Manager for FAI offers some advice for installing a Poly-V belt onto an engine.

What To Do:

  Try routing the belt around the grooved pulleys that have flanges first – this will help keep the belt in place during installation.

Examples of grooved pulleys with flanges include power steering pulleys, A/C compressor and routing idlers.

  Next, wrap the belt around the grooved pulleys without flanges, like crankshaft and some alternator decouplers.

  Once the belt is routed around each of the grooved pulleys, route it around the flat pulleys. Start with the flat pulley with the most amount of wrap (often the tensioner pulley), and move to those with the least amount of wrap.


  Using the appropriate tool, lift the tensioner to its installation position and slide the belt over the last pulley.

  Make sure the belt drive is clear, then start the engine and let it run for 5 seconds. Shut off the engine and check that the belt is properly seated in each pulley and that it is not misaligned.

Don’t Forget:

These are considered very general tips and don’t necessarily apply to every application. Always refer to the under bonnet sticker, service manual, or belt packing sleeve for proper routing information. If no information is available, be sure to sketch a simple diagram prior to belt removal.

Goodyear Gatorback, the next generation Poly V Belt.

Gatorback is an evolutionary leap forward in the design of Poly V Belts. It’s patented Helicog design reduces noise. It also reduces cracking and chunking by better overall contact with pulleys. Stretch, heat and abrasion resistance all add to increasing the life of the belt to nearly three times that of a standard Poly V Belt. Gatorback is a direct repalcement for existing standard Poly V Belts so there are no special tools or system changes required for fitment. Gatorback has over a decade of heritage earned on the race track, so by fitting Gatorback you can be assured of the best product for the job.


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