How to change axel bearings on 400ex. - ATV Enthusiast Community

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Old 09-12-2004, 01:54 AM
Range Rover
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Join Date: Feb 2003
Posts: 104
Default How to change axel bearings on 400ex.

Can anyone tell me how to do this the best way? I just bought a 400ex and have to change the bearings.
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Old 09-12-2004, 02:28 AM
Elite Pro Rider
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Join Date: Jul 2002
Posts: 6,853
Default How to change axel bearings on 400ex.

The hardest part is getting the old bearings out. There is no lip to catch a punch on. You can not push them straight threw. If you try that you will break the carrier. I have welded a piece of steel to the bearing race to have something to hit on. Weld a scrap to one bearing, knock it out, slide the tube out and then you can remove the second bearing.

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Old 09-12-2004, 07:35 PM
Pro Rider
Join Date: Aug 2001
Posts: 783
Default How to change axel bearings on 400ex.

Actually the hardest part is removing the axel nuts.

Here are some tips:

1) Loosen the axle nuts before anything else. If necessary, get someone to hold down the rear brake for you or use strap and some ingenuity to hold it down. You do not need to loosen the two nuts all the way off the threaded sleeve. Just far enough to get to the c-cip under the bell-shaped axle nut. Do not take the brakes off first or you can't use them to stop the axle from spinning. It really helps to order a set of axle nut wrenches. I got mine from Motion Pro. I had to use a dremel though to make one of them slightly larger so it slid over the bell-shaped nut.

2) remove the c-clip under the bell-shaped axle nut so the threaded sleeve slides down the axle.

3) Remove the right rear tire so you can remove the large nut on the end of the axle. Do this before removing the brakes too.

4) Once you do get the carrier out, just use heat on the carrier. Once it is hot (2-3 minutes on the first side), smack the carrier downward onto a 2X4 sitting on the garage floor. The weight of the metal sleeve spacer will act like a hammer and knock the bearing out of the carrier. Heat the other side and do the same thing. You never need to use a hammer or punch to get the bearings out.

5) do a search on this subject. There was quite a bit of detail on it about a month ago.


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Old 09-13-2004, 04:54 AM
Join Date: Jun 2004
Posts: 72
Default How to change axel bearings on 400ex.

Check here for more details.
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Old 09-13-2004, 06:11 PM
Range Rover
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Join Date: Feb 2003
Posts: 104
Default How to change axel bearings on 400ex.

Thanks guy's. I will start the project tonight. I will let you know how I made out. It doesn't like it is that bad. I did a Blaster one time and and I swore that after it was done that I would pay someone next time. How easy we forget.
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2000 , 2004 , 400ex , axel , axle , barings , bearing , bearings , carrier , change , nut , rear , removal , replace , turn

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