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Old 09-17-2011, 12:06 AM   #1
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arctic cat 366 belt wear

I have a 2008 Arctic Cat 366 that keeps burning up belts. The movable drive face gets so hot that it melts the rollers and dampers on the movable drive face. Has anyone else had this problem? If so any suggestions on what's causing it or what to do to fix it?
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Old 09-17-2011, 12:22 AM   #2
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Ensure that the belt vents aren't plugged up first thing. Who knows if a mouse took up refuge in one of them (there are 2) or something strange like that. You are using low gear for your low speed riding right? Anything under around 15mph or so should be cruised in low. The lower displacment engines cn't really pull the low speeds in high so the transmission must compensate and will reduce belt life dramatically.
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Old 09-17-2011, 12:29 AM   #3
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ive check both vents and replaced the belt and all of the rollers and dampers and the rollers and dampers lasted about 4 miles when i removed the cover all 4 of the dampers were melted and all the rollers were melted to flat,where is all the heat coming from.
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Old 09-17-2011, 05:51 AM   #4
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I have never heard of this. My girl rides the 366 always in high range and we have never seen the symptoms described. There is over 2,000 miles on the machine and the belt is in good shape. He has something going on with his, like you said, maybe the belt vents are blocked up.

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Ensure that the belt vents aren't plugged up first thing. Who knows if a mouse took up refuge in one of them (there are 2) or something strange like that. You are using low gear for your low speed riding right? Anything under around 15mph or so should be cruised in low. The lower displacment engines cn't really pull the low speeds in high so the transmission must compensate and will reduce belt life dramatically.
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Old 09-17-2011, 08:53 AM   #5
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Does the movable sheave move freely? Are you certain the seal behind the primary is not weeping a bit of oil? We have seen that a few times.
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Old 09-18-2011, 12:21 AM   #6
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belt wear

is it possible that the bearing is getting hot, how do i check the bearing with out taking it apart ,
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Old 09-18-2011, 07:32 PM   #7
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up date double checked both vents and the seal , the moveable face was or seemed to be working fine before i put the cover on, i dont know what else to check,could it possibly be the bearing witch also seems fine , and how would i check the bearing anyway, please help.
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Old 09-18-2011, 08:27 PM   #8
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Feel the case where the bearing is to see if it is hot. Put a 2' long piece of pipe on it and see if you can hear any grinding or screeching. Still shouldn't eat belts. Are using ac belts. Did it slip? Did it cook the seals on the sheave?Did you put the primary back together correctly making sure your belt wasn't touching the primary when you tightened it down? Make sure you can still see splines on the shaft. Also the belt is directional.
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