I had this problem some years back. It started after the first belt and pulley replacement around 100K (all OEM parts). I started checking everything carefully and found that the rear pulley was machined incorrectly and had about .020 of radial runout (dial indicators are handy things). I took it back to the shop that did the work and they replaced the rear pulley. That fixed it. Only time I get a squeak now is when the bike is washed and the belt is "squeaky clean" (go figure). It goes away once the belt gets a tiny bit of road dust on it.

 

How long or how many teeth are on the factory belt? I have an 85 fxwg that I need to order a belt for.

 

Belt has 126 teeth on it.

 

No the stock pulley is not chrome. I do agree about the soft aluminum into the belt, I think I see it,thought I was doing a good think buying that race pulley until i realized it would wear out fast,heavy steel one is good for 100,000miles .live and learn I guess, more money wasted.

 

Thanks for the info.

 

From my 01 Softail manual.



They are chromed so they last longer, the chrome is not show quality so it does not look like chrome.
They did change the style of the pulley with the twin c but think the old ones were also chrome.

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Assuming all is in proper order. Use Graphite on your drive belt. A little goes along way. Petroleum products can harm the rubber and can prolong the squeak and make it worse.

 

Thanks, that sounds very helpfull , we'll be trying the grafite for sure,too bad it's only ten degrees outside.