what tools are required to remove the jackshaft to replace bearings - HCS Snowmobile Forums

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Old 06-08-2019, 07:56 PM   #1 (permalink)
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Default what tools are required to remove the jackshaft to replace bearings

I got the airbox out the way , clutchs off, carbs off and im going to drain and gut the chaincase next day off.once i got the sprockets out of the chaincase and the flangette off on the clutch side, whats left to do/how do i go about getting it out of there?


once its out of there , what do i need to do to get the bearing replaced and back in proper?


lamens dummy terms preferred. never attempted this part of it before?
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Old 06-08-2019, 09:28 PM   #2 (permalink)
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Honestly i would spin the shaft after removing the chain in the case. If you dont hear any noise, rough feeling , or feel any up and down play in the bearing, than i wouldn't replace it. ( upper ) i personally have never experienced a bad upper case bearing on the edge sleds, even with 15,000 miles on them.
If you feel the need to replace it, than i understand.
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Old 06-08-2019, 09:31 PM   #3 (permalink)
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At that point the shaft should slide to the clutch side enough to come out of the chain case. Your home free then. A press is best to push the shaft out of the old bearing and to press the new bearing on.
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Old 06-08-2019, 09:33 PM   #4 (permalink)
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Tx-l is right on about the chain case side. I assumed you meant clutch side.
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Old 06-09-2019, 04:40 AM   #5 (permalink)
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Quote:
Originally Posted by 340 TX-L View Post
Honestly i would spin the shaft after removing the chain in the case. If you dont hear any noise, rough feeling , or feel any up and down play in the bearing, than i wouldn't replace it. ( upper ) i personally have never experienced a bad upper case bearing on the edge sleds, even with 15,000 miles on them.
If you feel the need to replace it, than i understand.
ill check it out after I gut the case. that's great news.id rather not mess with it if I do not need to.

I just figured where my speedo stopped working that the driveshaft bearing was most likely shot and while I have all that stuff off if that bearings shot the upper should be as well. ill definitely check it and if theres no unusual play ill leave it for now and just do the driveshaft.
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Old 06-09-2019, 04:45 AM   #6 (permalink)
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Tx-l is right on about the chain case side. I assumed you meant clutch side.
I just figured where the speedo quit the bearings most likely toast on the clutch side, so I figuredthe case side would be shot as well on the lower and the upper would be as well.


if I can get by with just doing the driveshaft im happy.

ill spin the shafts once the case is gutted and see whats what.i already have two bearings so I may just do both sides of the driveshaft this year and leave the jackshaft be for a later date if I can get away with it.
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Old 06-09-2019, 04:50 AM   #7 (permalink)
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I have the bearing kit, speedo key and a new speedo cable.should be all I need to fix the speedo issue or is there something else I should order as well?
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Old 06-09-2019, 08:23 AM   #8 (permalink)
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only other piece of that puzzle is the speedo angle drive. which is not very common to fail. i see them bad from time to time on older poorly maintained sleds. probably the bearing is failing? and it sheared the speedo key off? most common scenario.

removing the jackshaft on a edge chassis sled is a piece of cake. there's a slot in the chassis to just lift it out once it clears the chain case. just common tools needed to remove and replace the bearing. a ball joint tool that fits over the shaft to remove the old bearing. that and a hammer. find a piece of pipe that just clears the shaft and hits the inner bearing race and drive it on. it's a press fit but not that bad. nothing like a crank bearing that can take 20 tons to get it moving. that's why heat is your friend.
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Old 06-09-2019, 08:25 AM   #9 (permalink)
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Quote:
Originally Posted by 340 TX-L View Post
Honestly i would spin the shaft after removing the chain in the case. If you dont hear any noise, rough feeling , or feel any up and down play in the bearing, than i wouldn't replace it. ( upper ) i personally have never experienced a bad upper case bearing on the edge sleds, even with 15,000 miles on them.
If you feel the need to replace it, than i understand.
Never had to replace that bearing either since poo made it to be greased. Basically the same with the speedo driveshaft side bearing....you have to be religious about pumping a shot of grease in there after every ride or trip.
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Old 06-09-2019, 08:29 AM   #10 (permalink)
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Quote:
Originally Posted by ZR 800 efi View Post
I have the bearing kit, speedo key and a new speedo cable.should be all I need to fix the speedo issue or is there something else I should order as well?
Theres a paper flange gasket on the speedo side that usually tears, at least every time i've pulled them apart. You can use some rtv gasket sealant instead, but i like to replace the gasket myself.
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