my 400 will lock in the front left wheel even when the awd switch is off..i unplugged the wires that go to the hubs and it still acts the same..could it be the prop shaft bent or what??also how much is the complete prop shaft and is it the same as a 500 sportsman has in it??need help with this bomb!!i have changed the fluid three times and it is still the same.

 

did you check to see if the spring that pulls back the rollers is broken?

 

Also check the bearings. Too-tight, too-loose, or bad bearings will make the awd act strangely, too.

 

THE BEARINGS I BELEIVE ARE GOOD BECAUSE THE WHEEL DOESNT have any wobble in it..it has never been opened up because im afraid i cant get it back right..could the axle nut need readjusting after 2000 miles or what?the prop shaft from a 500 sportsman will not work because it is a little bit longer..but a 500 magnum may be the same.

 

Have you checked the fluid in your hub yet?

 

i took it completly apart today to look for troubles and couldnt even see a mark..my dealer said i have a broke spring but i didnt.i cleaned up everything good and put it back together and torqued it right and it seems to be fixed for now ..i just got to ride a little bit..

 

It was most likely the axle nut torque, then.

 

but how could it change hwen it has a cotter pin in it and it has never been opened up before??

 

1) You could have hit a big 'whoop' that bottomed out the front end hard enough to 'stretch' things out a little.

2) Normal wear will cause the bearings to get 'loose' over time.

Keep in mind, they only need to be 'loose' by 1/4 to 1/2 a turn before problems can begin to arise.

Also, it was possible to have had them 'gum up' just a little, and by taking them apart, cleaning them off, and putting it all back together, you could have got things back the way they should be.

Actually, now that I had more time to think about it, it was more likely gummed up, than the nut torque, because as the bearings loosen, it is more likely to NOT lock, than lock when it shouldn't, but that is more a rule of thumb than an absolute.