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Old 02-12-2011, 12:13 PM
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92 350L trailboss 4x4 front wheel drive cams

MY DRIVER'S FRONT WHEEL WON'T ENGAGE IN 4WD. I TOOK IT APART HUB AND THE CLUTCH ASSY AND ALL SEEMS IN ORDER. THE DRIVE SHAFT IS TURNING BUT IT DOES NOT GRAB THE HUB. ANY IDEAS? SORRY FOR THE CAPS BUT I CAN'T FIND MY GLASSES, THANKS FOR ANY HELP

I guess what I'm asking is can someone explain how the cam system works and any tolerances and what are the common failures? The parts look pretty expensive to go easter egging my way to a solution. The right side parts all look to be in good shape but I can not find any tolerances for them anywhere.
My next try is going to be to take the left one and swith it to the right side but that seems like a pain just to find out that the cam might be wore down a few thousandths.

Ok now I have had more time to see it looks like there is a magnetic coil that energiges these...any help in troubleshooting these?

Last edited by PEACEFULLVALLEY327; 02-13-2011 at 10:59 AM. Reason: spelling and more info
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Old 02-12-2011, 02:13 PM
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Old 03-14-2011, 04:31 PM
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same problem

yeah i have a 94 trail boss 350 4x4 and it seems that i am having the same trouble, it seems that my front left hub isnt locking, now the shaft going to the wheel is spinning but the hub isnt locking, so i was wondering what you found out on this problem, or perhaps somebody else has the answer?
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Old 03-16-2011, 04:00 PM
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same as well

It must be a common problem i have a 1989 trail boss and the front right will kick in once and a while and then nothing on either side any luck with u yet or no i cant seem to figure it out
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Old 03-16-2011, 04:14 PM
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I have a 1990 Trail Boss 350L and had the same issue. The problem was that the wire going to the hub broke. So when the 4x4 switch was selected the signal to engage the 4x4 couldn't be made. I re soldered it and it now works perfectly.
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Old 03-16-2011, 05:13 PM
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yeah i found the problem, i contacted a service department at polaris, first they said to check, and or flush the fluid in the hubs, there is a little screw on the hub where you can drain or add fluid, now polaris has a type of gear oil they recommend, this worked for me, after that then possibly check the wiring going to the magnetic coil in the hub bearing, make sure it is getting current. on mine it was wrapped in a wiring harness along with the brake line, after that try replacing the coil, and or strut. btw they told me worse case, if i brought it in and had them fix it, would cost around $350 assuming they replace the strut and coil. again that was worse case. so in the end simply adding fluid fixed it for me.
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Old 03-16-2011, 06:06 PM
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sounds good

ok thanks ill give it a shot
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Old 06-18-2011, 01:27 PM
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Borrow this thread, this is exactly how my Trail Boss is acting.. Don't engage on left side.

Anyway, have you guys solved the issue with checking the wiring and empty the hubs?
And how is it going to engage when its working as it should?
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Old 06-18-2011, 01:45 PM
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Found a good video where he explains his issue with not engaging one of the wheels. And I know that my front wheel got a bad bearing, maybe something similar have happend.

It's a Scrambler, but the parts between the different machines should be the same.

/jorp
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Old 06-27-2011, 11:05 AM
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Got a question about the 4x4, now its engaging both front wheels... But when its engage it's similar when you pop the clutch in a (for example) a car.
Seems kind of unhealthy for the mechanic if it just snaps in, shouldn't it operate something similar to gently engaging? Or is that how it's suppose to act?

Plz, grateful for replys.

/jorpe
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