what tools are required to remove the jackshaft to replace bearings - Page 2 - HCS Snowmobile Forums

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Old 06-09-2019, 11:27 AM   #11 (permalink)
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Current Sled(s): 2005 polaris 700 xc sp f/o &1980 polaris tx-l
Previous Sled(s): 2002 polaris 500 xc sp - 1986 indy 400 - 1976 polaris tx 340
Location: Trempealeau co. Wisconsin
Favorite Riding Area: Northern wisconsin & Minnesota
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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.
The lower drive shaft bearings take alot more stress than the upper jackshaft bearings.plus the speedo side lower bearing always seems to get water in it ( snow melt ).
I found out with the lower bearing on the speedo side, you dont ignore that sticker that says grease every 1,000 miles. In fact i grease that puppy every 300 miles. Dont ask me how i know.
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Old 06-09-2019, 11:44 AM   #12 (permalink)
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Location: mooseland
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The lower drive shaft bearings take alot more stress than the upper jackshaft bearings.plus the speedo side lower bearing always seems to get water in it ( snow melt ).
I found out with the lower bearing on the speedo side, you dont ignore that sticker that says grease every 1,000 miles. In fact i grease that puppy every 300 miles. Dont ask me how i know.

im willing to bet the last time it saw grease it was in rosseau.
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Old 06-09-2019, 12:00 PM   #13 (permalink)
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Current Sled(s): 05 600 xcsp 50th
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Originally Posted by 340 TX-L View Post
The lower drive shaft bearings take alot more stress than the upper jackshaft bearings.plus the speedo side lower bearing always seems to get water in it ( snow melt ).
I found out with the lower bearing on the speedo side, you dont ignore that sticker that says grease every 1,000 miles. In fact i grease that puppy every 300 miles. Dont ask me how i know.
Problem with the lower driveshaft speedo side bearing is it gets warm during the sled operation. When the sled is parked it cools and draws in moisture which over time creates rust on the ball bearings inside. If you pump a shot of grease after a ride or trip it pushes out any water that can sit in there creating an issue leading to bearing failure. We brought this up with polaris in the late 80's after installing a grease zerk on the flange proving it eliminated the issue.
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Old 06-09-2019, 12:09 PM   #14 (permalink)
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Current Sled(s): 2005 polaris 700 xc sp f/o &1980 polaris tx-l
Previous Sled(s): 2002 polaris 500 xc sp - 1986 indy 400 - 1976 polaris tx 340
Location: Trempealeau co. Wisconsin
Favorite Riding Area: Northern wisconsin & Minnesota
19-20 Mileage:
18-19 Mileage: 826
17-18 Mileage: Maybe 3
16-17 Mileage: 330
Age: 47
Riding Since: 1984
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Problem with the lower driveshaft speedo side bearing is it gets warm during the sled operation. When the sled is parked it cools and draws in moisture which over time creates rust on the ball bearings inside. If you pump a shot of grease after a ride or trip it pushes out any water that can sit in there creating an issue leading to bearing failure. We brought this up withb polaris in the late 80's after installing a grease zerk on the flange proving it eliminated the issue.
Yup... thats why i grease my bearings much sooner than the manufacturer says too. I feel 1,000 miles is much to late.
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Old 06-09-2019, 12:57 PM   #15 (permalink)
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Yup... thats why i grease my bearings much sooner than the manufacturer says too. I feel 1,000 miles is much to late.
1K miles is what you'd do after a bag trip. We had a new sled with a bearing that was junk after our first 1400 mile bag trips of the year. That bearing would have surly failed on the next trip if it wasn't replaced. You should of felt how rough it was after discovering it while realigning the drive sprockets on the driveshaft.
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Old 06-09-2019, 01:06 PM   #16 (permalink)
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Use ceramic bearings, no grease needed and will out-last the sled.
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Old 06-09-2019, 07:10 PM   #17 (permalink)
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Use ceramic bearings, no grease needed and will out-last the sled.
Tried to get those bearings in ceramic years ago...couldn't find a cross.
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Old 06-09-2019, 07:55 PM   #18 (permalink)
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Current Sled(s): 2007 Dragon 700 ////05' switchback 600
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Location: mooseland
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19-20 Mileage:
18-19 Mileage: not enough
17-18 Mileage: not enough
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i have a polaris bearing and 2 of whatever royal distributing deems equivalent.

if i can get by with just the clutchside drive shaft bearing ill be using the polaris for sure.
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Old 06-09-2019, 09:16 PM   #19 (permalink)
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Current Sled(s): 05 600 xcsp 50th
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18-19 Mileage: not much
Age: 6
Riding Since: 70 s
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i have a polaris bearing and 2 of whatever royal distributing deems equivalent.

if i can get by with just the clutchside drive shaft bearing ill be using the polaris for sure.
Save your money and go with the all balls bearing. They last just as well for a lot less.
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Old 06-09-2019, 09:18 PM   #20 (permalink)
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bro, you need to swing that shit over here to Manitoba, we'll drink some locally made Crown Royal (with ginger or coke) and bust that beast up and fix it right. Talk shit about that asswhip Trudeau then, hug, high five, chest bump and i'll get your ass outta my shop. It's easy as shit, just come by. lol
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