Changing the jackshaft bearing in a 2008 IQ 600 - HCS Snowmobile Forums

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Old 02-18-2011, 09:49 PM   #1 (permalink)
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Default Changing the jackshaft bearing in a 2008 IQ 600

Can the jackshaft bearing be changed without taking the entire jackshaft out? Any help would be much appreciated. Thanks.
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Old 02-19-2011, 12:26 PM   #2 (permalink)
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You need to take it out it's pressed on.
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Old 02-19-2011, 08:10 PM   #3 (permalink)
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I think the noise my sled was making was from ice. It all melted after the warm up and i can't hear the noise anymore. I feel a lot better about it. Even though there is 5.700 miles on the sled. Should the bearing needed to be replaced by now?
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Old 02-19-2011, 10:08 PM   #4 (permalink)
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I would change all bearing at that mileage. Last summer I did all drive bearings not that hard to do.
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Old 02-19-2011, 11:13 PM   #5 (permalink)
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How do i get the jackshaft out?
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Old 02-20-2011, 08:54 AM   #6 (permalink)
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Just so we are talking about the same one, the Jackshaft is the one by the secondary, not the shaft that runs through the track.

Mine went out at 4500 miles, you should check it.

Pull belt and secondary, see if there is any visible wear. Check for excessive play.

If it's bad pull air box, pipe and silencer. Open chain case and remove chain and top sprocket. Remove 3 bolts holding jackshaft bearing and pull shaft out left side.

Take to someone that has a press and have them swap bearings.

Last edited by racerx46; 02-20-2011 at 08:58 AM.
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Old 02-21-2011, 04:27 PM   #7 (permalink)
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That's the only tricky part, is that they are press fit. I'd recommend changing them at your mileage anyway. If it's not making the noise anymore then it may be because the bearing is gone. And that leaves your jackshaft room to eat up your airbox which turns expensive fast. Something to inspect when you take it out...
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Old 02-22-2011, 10:05 AM   #8 (permalink)
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I change the jackshaft and drive shaft bearings on my shift last summer.
I converted the jackshaft bearing to a greaseable one.
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Old 02-18-2013, 12:20 AM   #9 (permalink)
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I pulled this up on a search. My 2008 dragon just turned 10,000 miles. I've never changed jackshaft bearings or driveshaft bearings. I have a needle grease gun that I can get grease inside the jackshaft and the driveshaft bearings sound fine. Should I still be worried about them?
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Old 02-18-2013, 01:38 PM   #10 (permalink)
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There's two schools of thought when it comes to bearings.Some guys change their bearings at regular intervals(2-3 years)and others keep checking them regularly and change them only when necessary.I have an 08 shift with 5000 miles,all original.I also have a 96 Indy with 8000 miles and I changed all the wheel bearings this year for the first time (17 years).Out of 11 wheel bearings, 9 were good,1 was rough,1 was shot.I say,check all your bearings 2 times a year and change only when necessary.
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