Hey I just want to know how to change the rear bearings on a '04 yfz 450. I am going at my oncle's cottage saturday and I was thinking of bringing my atv but I need to change the bearings first. My mechanic isnt available right now so I tough maybe I could do it myself but with your help. Thanks

 

Loosen the set screws on the axle nut. Loosen the axle nut. Remove the brake side wheel and hub. Remove the brake caliper. Remove the axle nut. Remove the brake rotor(you will probably need to use heat and a good allen wrench on these. I like the kind that you can use with an impact wrench.) Remove chain adjuster bolts(the 17mm ones that are near the brake rotor.) Remove the chain. Axle will slide out toward chain side. It may help to remove the other rear wheel as well. Axle carrier will also slide right out. You need a long punch and hammer(dead blow)to bang out the bearings. Smack them a few times in one place, then move a bit and hit it again. Keep working your way around in this manner. I put the carrier over a few blocks of wood so as not to mar it up. There should be a rubber seal and 2 sets of bearings per side.

When installing the new bearings, they need to be driven in evenly. Again, a block of wood and some patience will work well here. Put the wood over the bearing being driven to soften the blow and also disperse the force evenly. Reinstall everything else in reverse order. Figure a few hours if you have never done it before.

 

thank you very much

 

Your welcome, now go give her heck!

 

How do i change my Rear axle bearings on my 06 YFZ 450?

 

Pretty much the same way. The swingarm is different, but the steps are essentially the same. The bearings and seals used are the exact same. This really is how you would change pretty much any chain driven solid axle sport quad.