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2007 Apex starts to vibrate at 70 mph (pretty bad)??? help

bigdave

Extreme
Joined
Dec 18, 2003
Messages
115
Location
sylvan lake, Michigan
Country
USA
Snowmobile
14 Viper LTX SE, 14 Viper RTX SE , 08 FX Nytro , 07 FX Phazer, SOON 2017 Sidewinder LTX LE Blue
Guys

my Apex starts to vibrate at 70 mph and I can seem to figure out where to start I have looked at springs bearings and nothing ?? any ideas where else to look ?

dave
 

Track ripped/ torn? Studs missing?
 
Secondary clutch bearing directly behind clutch?
 
Check speedo bearing on drive axle, drive belt could be starting to de-laminate, check for missing track clips, check chain tension.
 
thanks guys a ton, Ill dive in to it tonight and report back if I find something.
 
Guys

my Apex starts to vibrate at 70 mph and I can seem to figure out where to start I have looked at springs bearings and nothing ?? any ideas where else to look ?

dave
My 07 Attak was doing that at high speeds. The washers on the rear axle had worn groves into my rails. The tension bolts would only tighten so far and then stripped. Not sure how many miles you have but mine started when the W arm cracked and other suspension components took up the stress.
 
check the belt. usually the culprit on my sled.
 
I have had ice build up.. do it.. I bring it in and thaw it out.. do this so much.. runs like a new sled after.
 


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