2018 primary clutch - Polaris ATV Forum
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post #1 of 8 (permalink) Old 04-16-2019, 04:04 AM Thread Starter
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2018 primary clutch

I am doing some Maintenance and greasing the one way bearing. Put it all back to gather with all the right torque specs with a new belt. Now the ATV hard to shift and will move with no throttle. Everything is clean and the one way bearing is in the right way. the ATV has 450 miles and about 75 hours. Any help would be Great
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post #2 of 8 (permalink) Old 04-16-2019, 04:42 AM
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What kind of grease did you put on the one way bearing? A heavy, long fibre grease like wheel bearing grease will cause a dragging until it gets hot.

I could not find anything in the service manual about greasing the one-way bearing - only to install it as an assembly when replacing and that it should rotate clockwise and lock up counter clockwise.

Perhaps the bearing should not be greased other than the grease is has on it when purchased new?
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post #3 of 8 (permalink) Old 04-16-2019, 06:10 AM
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I would pull the clutch and clean out the grease you used and try a white lithium grease. I have never greased a Polaris clutch bearing, but do know that sprag bearings should not be lubricated with extreme pressure types of grease.

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post #4 of 8 (permalink) Old 04-16-2019, 06:13 AM
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If you're gonna clean/regrease the one-way you should use only a VERY light coat of high temp grease and install new Vespel washers on either side while doing it.
Did you clean the shaft and clutch mating surfaces and make sure the clutch was fully seated on the shaft?
What belt did you use?
Before going too deep back into it you might try the original belt again to eliminate that as a cause.
Did you remove the secondary clutch? If so, make sure you didn't lose or misalign the shim washer(s) behind it.
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post #5 of 8 (permalink) Old 04-16-2019, 12:02 PM
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Quote:
Originally Posted by Matthew Beaver View Post
I am doing some Maintenance and greasing the one way bearing. Put it all back to gather with all the right torque specs with a new belt. Now the ATV hard to shift and will move with no throttle. Everything is clean and the one way bearing is in the right way. the ATV has 450 miles and about 75 hours. Any help would be Great
How did you get the one-way bearing off without the roller needles all falling out. I wonder if some of the needle rollers got twisted around while putting it back together. Every time I have taken one apart it has already been seized to the shaft and all fell apart when I pulled the bearing off. The new bearing comes with a plastic insert that holds it all together. Without that insert, it looks to me like there is a good chance of getting some of the needle rollers in cock-eyed. How well did the one way turn once you got it done. It must almost turn with no friction at all.

D
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post #6 of 8 (permalink) Old 04-16-2019, 04:19 PM
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"Every time I have taken one apart it has already been seized to the shaft"

They WILL just fall apart if they're already past being serviced. I've cleaned/regreased a bunch of them but you can't wait till its actually bad. You have to do it BEFORE it starts sticking. Your clutches need serviced/inspected and repaired at around 1000-1500 miles, according to severity of use, to keep them it top shape. Its just another part of maintenance on these machines.
Some folks run their machines for several thousands of miles with no clutch service or belt changes but by then the clutches have run dirty for so long that they are often trashed out so bad that even replacing parts only fixes them for a little while.

Last edited by polman500; 04-16-2019 at 04:21 PM.
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post #7 of 8 (permalink) Old 04-16-2019, 04:34 PM
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I've got an old 02 Sportsman 500 that is one of my work-horses around the farm and serves as a guest machine for trail rides that the primary has been apart, cleaned and the bearing repacked and put back together at least 3 or 4 times over the last 7 or 8 years I've owned it. The speedo quit years ago at around 5000 so its untelling how many miles it has on it. Shifts like butter and no problems to this day.
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post #8 of 8 (permalink) Old 04-17-2019, 03:45 PM
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Either your bearing is on backwards or the grease is wrong. You should only use a dry spray lube,,,dry graphite spray.
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