M8 tunnel vibration - HCS Snowmobile Forums

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Old 01-06-2013, 06:11 PM   #1 (permalink)
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Default M8 tunnel vibration

Getting a pretty noticable tunnel vibration. Rode some groomed trails today, about 50 miles, which I hardly ever do, but there is a pretty didtinct vibration, really noticable be my left foot. Feels like someone holding a sawzall against the tunnel. Gets worse the faster you go. All skid wheel bearings are good. Changed dd fluid begining of the year. Picked up the sled over the summer with 1700 miles. Did not crack open the case and check the bearings. Is this symtematic of dd bearings? What else should I check? Noticed something last weekend, but we usually ride in the powder and it was hard to pinpoint. Thanks
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2010 M8 Sno Pro 153
SLP clutching and can
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Old 01-07-2013, 01:29 AM   #2 (permalink)
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I would take a real good look in the dd case, im thinking you might have some bearing issues

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Old 01-07-2013, 08:07 PM   #3 (permalink)
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Yeah, i'm gonna pull it apart and see what I see.
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SLP can

2010 M8 Sno Pro 153
SLP clutching and can
Powder Hound Skiis
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Old 01-08-2013, 10:29 AM   #4 (permalink)
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^^

That was the only symptom I noticed on mine when it was bad. Very slight vibration, pulled the DD apart and the bearing was shot.
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Old 01-08-2013, 06:52 PM   #5 (permalink)
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Pulled the drive bearing was shot. Also gonna put in a BDX anti stab kit aswell cause I run my limiters all the way out. Think that might be some of what I'm feeling aswell
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2013 M8 Sno Pro Limited 153
SLP can

2010 M8 Sno Pro 153
SLP clutching and can
Powder Hound Skiis
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Old 01-09-2013, 02:41 AM   #6 (permalink)
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Good deal, you found the problem, there are a ton of threads on this bearing issue.
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Old 01-09-2013, 08:31 PM   #7 (permalink)
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Riding Since: 1985
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Yeah, I guess I should have pulled it apart over the summer! Oh well, atleast it should be good now
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SLP can

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Old 01-10-2013, 06:28 AM   #8 (permalink)
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Quote:
Originally Posted by mainemountainrider View Post
Pulled the drive bearing was shot. Also gonna put in a BDX anti stab kit aswell cause I run my limiters all the way out. Think that might be some of what I'm feeling aswell
Anti-stab is on my short list of things to do also.
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Old 03-08-2013, 02:05 PM   #9 (permalink)
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Mainemountain I just commented on another thread (sorry for pestering). What bearing did you go with? Lots of guys doing lots of different things from switching sizes to machining and all...
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