Polaris 850 XP EPS system disassembly - Polaris ATV Forum
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post #1 of 23 (permalink) Old 06-04-2012, 03:25 PM Thread Starter
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Polaris 850 XP EPS system disassembly

Well the power steering or EPS quit working in my 09 850 XP and decided to take it apart so you can see what you get for $1000 bucks when your extended warranty won't cover it.

Here we are splitting the case.


You have a circuit board etc.




I believe this is what tells the power steering motor what direction your turning.


The solid shaft and plastic gear.


The shaft gear and screw gear removed.





The rubber dampener for the screw gear I believe.


Time for the electric motor.


Not much to it.


Well there you have it, not much to them for the money but I'll agree they are not very serviceable. I was surprised that the unit is sealed pretty good not any dust or moisture in it that I could find. Just a lot of money for this little luxury.

Preston

2009 Polaris 850 XP
2009 Polaris 850 XP LE Nuclear Sunset... Gone to ATV Heaven....
2006 Chevy Duramax Diesel 542 RWHP 1148 ft.lbs.
2010 Jetta Diesel
2003 Cat 236 Diesel
2010 Ferris 61" 2500z Diesel
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post #2 of 23 (permalink) Old 06-04-2012, 05:01 PM
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What company was your extended warranty through and what was their reason for not covering it?

2012 Polaris XP 850 HO EPS, Sunset Red
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post #3 of 23 (permalink) Old 06-04-2012, 05:46 PM
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wow...I cant believe that is all there is to it. Whats up with the pastic gear I wonder?
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post #4 of 23 (permalink) Old 06-04-2012, 06:06 PM
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That full disassembly with pics was great. Do you really know why it quit. I didn't see any burnt circuit boards (although I didn't realize that was in there). I take it that yours was replaced and you got to tear your old one apart?????
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post #5 of 23 (permalink) Old 06-05-2012, 04:47 AM Thread Starter
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Quote:
Originally Posted by Forrest View Post
What company was your extended warranty through and what was their reason for not covering it?
It was Cycle Max, National auto care corporation. They said that my extended warranty is part specific. They listed everything that was covered but power steering box was not one of them. Also I think it has to do a lot with the dealer you use as well. The good dealers know how to talk to these people and can sometimes get things covered that aren't supposed to be covered. But once a dealer tries to get it covered and doesn't succeed then trying to go to another dealer won't work either cause there already been a denied claim. So make sure your warranty covers power steering!!!!

Preston

2009 Polaris 850 XP
2009 Polaris 850 XP LE Nuclear Sunset... Gone to ATV Heaven....
2006 Chevy Duramax Diesel 542 RWHP 1148 ft.lbs.
2010 Jetta Diesel
2003 Cat 236 Diesel
2010 Ferris 61" 2500z Diesel
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post #6 of 23 (permalink) Old 06-05-2012, 04:50 AM Thread Starter
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Quote:
Originally Posted by gtsum2 View Post
wow...I cant believe that is all there is to it. Whats up with the plastic gear I wonder?
I was surprised as well to find the plastic gear but this bike has 1900 miles and that gear shows no sign of wear. I'm not sure how its held onto the shaft I put it in my vice and hit it with a BFH and was unable to break it free from the shaft. So I'll give them credit on that its tough.

Preston

2009 Polaris 850 XP
2009 Polaris 850 XP LE Nuclear Sunset... Gone to ATV Heaven....
2006 Chevy Duramax Diesel 542 RWHP 1148 ft.lbs.
2010 Jetta Diesel
2003 Cat 236 Diesel
2010 Ferris 61" 2500z Diesel
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post #7 of 23 (permalink) Old 06-05-2012, 04:56 AM Thread Starter
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Quote:
Originally Posted by CVCOBRA1 View Post
That full disassembly with pics was great. Do you really know why it quit. I didn't see any burnt circuit boards (although I didn't realize that was in there). I take it that yours was replaced and you got to tear your old one apart?????
I still don't know why the motor was acting up. I'm sure it has something to do with a sensor of some sort. But everything inside of it looked good, no real signs of dirt or moisture inside. And as far as replacement went, Yes I ordered my replacement on-line. My dealer wanted $1200 for just the box and another $500 to change it out. I bought my new box on-line for $982 Shipped. It will be here tomorrow and since there is no core I couldn't find a post that had pics of a disassembled box I decided I'd show everyone what it consisted of and maybe some aftermarket company will see this post and build their own to compete with the crazy cost of the one globe motors builds for Polaris.

Preston

2009 Polaris 850 XP
2009 Polaris 850 XP LE Nuclear Sunset... Gone to ATV Heaven....
2006 Chevy Duramax Diesel 542 RWHP 1148 ft.lbs.
2010 Jetta Diesel
2003 Cat 236 Diesel
2010 Ferris 61" 2500z Diesel
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post #8 of 23 (permalink) Old 06-05-2012, 05:25 AM
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From what I see in pics 4 and 5 looks like there has been some moisture in it. Have you tried drying it well and reassemble to see if it will work? What exactly was it doing when it want bad? Did it just stop working or was it acting up?
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post #9 of 23 (permalink) Old 06-05-2012, 06:45 AM
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Garage
Sorry for your issue, but thanks for posting, I was wondering what it looked like inside.

Craig

2011 850XP EPS, Roctane tires, 3000lb winch

2013 850XP LE, Glacier III Plow
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post #10 of 23 (permalink) Old 06-05-2012, 10:04 AM
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Interesting pics.

How does it handle without the EPS operating? Was it just like a non-EPS model?
---------------------
Jamey
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