KymcoForum.com
General => General Discussion => Topic started by: kbshaq on August 08, 2014, 06:01:21 PM
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Does anyone have experience on the life expectancy of the CVT belts?
These belts aren't the easiest to get to to check for wear or cracks on the belt, that's why I'm asking. :)
Thanks in advance!
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As you might already know, it depends on your riding style.
I ride very aggressively and constantly @ high rpm, so I check my belt every 3000 miles or so, last time I check it was 9300 miles, and it's still in very good condition.
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They will initially shed dust then after cleaning out the dust hardly shed anymore, thats been my experience.
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Go to Grandvista Page. Then page 3, then go to line 15. "Shredded Belt"
Signed: Urbestfriend
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Thanks, urbestfriend. Wow, your belt was blown to smithereens! :)
Mine wasn't as bad, see attachment. :D
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It also really depends on the scooter. It's better to judge your belt by width. There is a spec in your service manual. I've NEVER seen a belt break before it was past it's service limit. Check the width with a micrometer and inspect for cracks or any defects.
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I replace mine every few years rather it needs it your not.most of mine stretch out of shape and will hit the starter bendex.good sign to replace belt.
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I replace mine every few years rather it needs it your not.most of mine stretch out of shape and will hit the starter bendex.good sign to replace belt.
Yup, this will be my "credo" from now on. :)
Getting stranded and waiting in an area where there's no cell signal isn't fun.
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When I get belts I get 2 at a time. If I have to ill change mine on the side of the rd. Did it once
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I just replaced my belt after 1500 Miles but mainly to have a spare also.
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experience on the life expectancy of the CVT belts
Geely-Jalon 139QMB 50cc 4-stroke (http://scootersus.com/x8.html) was put into service September 2005 and only used for nearby errands running 25-30 MPH. Original belt looked to be in pretty good shape (http://i49.tinypic.com/29ljm9u.jpg) October 2009 at odometer 3072 kilometers (1909 miles) when installing NCY variator and 6 gram Dr. Pulley sliders (http://scootdawg.proboards.com/thread/27008/139qmb-variator-changeout-guidelines?page=1&scrollTo=271283). Original belt failed August 2014 at odometer 6202 kilometers (3853 miles) . . around 8 years and 11 months service. The 3 variator slides had disintegrated causing NCY guide wear. The sliders still weighed 6 grams each. Cleaned CVT chamber using compressed air, then brushing with a diluted Simple Green solution (http://scootdawg.proboards.com/post/332534/thread) and rinsing off. Applied Walmart SuperTech grease to clutch torque driver bearings (http://www.zumaforums.net/phpBB3/viewtopic.php?f=57&t=17831) and starter bendix. Re-installed the original variator with 3 new slides, 6 gram sliders, and a new Gates Powerlink 669-18-30 belt. Applied blue thread locker prior to torquing clutch nut to 30 foot-pounds and variator nut to 40 foot-pounds.
(http://i57.tinypic.com/2jb3xjk.jpg)
(http://i58.tinypic.com/25gz78g.jpg)
(http://i62.tinypic.com/2v9wzlc.jpg)
(http://i59.tinypic.com/157dr36.jpg)
(http://i60.tinypic.com/9h03yr.jpg)
(http://i58.tinypic.com/1zp02sl.jpg)
(http://i58.tinypic.com/23jsb5v.jpg)
(http://i57.tinypic.com/2ekj140.jpg)
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I just replaced my belt after 1500 Miles but mainly to have a spare also.
Chris: 1500 miles? That's overkill. You should get @ least 7,000+ miles out of a decent belt. Kymco uses Gates (good stuff)
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I think it's a good idea to replace your belt based on what your manual suggests.
It won't cost you too much money to just replace the belt, but it might cost you a lot because a broken belt might cause damage to other parts.
On my DT300 manual it says replace every 12,000 miles so it's not too bad for a $80 belt (Mitsuboshi, a Japanese company made that belt for kymco and the quality is really good)
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When ever you change your belt, how does everyone go about torque on the nuts? Guessometer or torque wrench? Hoping for guessometer lol, i hate torque settings. ::)
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I just read in the Kymco service manual that the belt should be changed at 10,000 kilometers - 6,200 miles. Does this seem right?
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When ever you change your belt, how does everyone go about torque on the nuts? Guessometer or torque wrench? Hoping for guessometer lol, i hate torque settings. ::)
I use a variator holding tool and 1/2" HF torque wrench to 40 ft/lbs plus and extra click or two. I only replaced mine after 1500 miles to have a spare in my storage compartment that I should be able to replace roadside.
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I use a variator holding tool and 1/2" HF torque wrench to 40 ft/lbs plus and extra click or two. I only replaced mine after 1500 miles to have a spare in my storage compartment that I should be able to replace roadside.
I've ALWAYS used impact wrench, 3/8 electric never stripped a variator nut out had one come loose.
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I've ALWAYS used impact wrench, 3/8 electric never stripped a variator nut out had one come loose.
I dont have an impact wrench but after removing my variator twice already, I feel the variator nut comes loose because some people tighten the pulley on the belt with out compressing the torque spring to ensure the belt is lose. An Impact wrench is on the to buy list though bettin, I agree its much easier and faster.
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I use an impact wrench to remove the nuts but always use a torque wrench to tighten them. I currently have 10,500 miles on the belt of my Super 8 150. I will be changing the belt, rollers and sliding blocks soon. I changed the original belt after only 7000 miles but that was way to soon. It still looked like it was new and had no noticeable wear.
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Applied Walmart SuperTech grease to clutch torque driver bearings and starter bendix.
(http://i62.tinypic.com/2v9wzlc.jpg)
I didn't see that we need to apply grease on my service manual, is it a must to do that? If so, I will need to do it as soon as possible.
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I use an impact wrench to remove the nuts but always use a torque wrench to tighten them. I currently have 10,500 miles on the belt of my Super 8 150. I will be changing the belt, rollers and sliding blocks soon. I changed the original belt after only 7000 miles but that was way to soon. It still looked like it was new and had no noticeable wear.
If you're going off the dash that's kms not miles.
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If you're going off the dash that's kms not miles.
The ODO on my Super 8 reads in miles, not kms.
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Like I mentioned....Every 7,000 miles is about right.