Lonestarbanshee has it backwards, heat the cases and freeze the bearings. Just thought I'd add that to it. But seriously, its easy to do and is alot cheaper than a shop.

 

You don't really need a press, TrxR, but I don't consider it a great do it yourself project. Seems when we get a new guy out of school doing this operation, they can do a bit of swearing. Or the tran shafts come out and spill some gears and that really confuses them. Still it's not that tough, but there is always those first time snafu's. Agree with DaBeechMan about the heat for removing and installing the bearings. It makes the job much easier. Don't use a propane torch tho (or god forbid oxy) as the aluminum dissipates heat too fast for that to work very well. You need something that will heat up the WHOLE case. I use a hot plate set at 200F, an oven would work good too. Case should be too hot to touch for very long, but not hot enough to burn your skin. Nothing over 200F though!! Just read lonestarbanshee's post and with all due respect, you wouldn't want to "freeze the case and heat the bearing", that's backwards. If your task is installing a bearing on the crankshaft though, it works great to put the bearings in a little oil and heat to about 175F. The only thing I ever freeze is valve guides (of course not even found on your beast).

 

Yea you can use an oven. If your decent with a torch to where you know what your doing you can use that as well. But an oven is more suited for guys

 

Oops, I had it backwards. I guess you can tell which way I did it?

 

lol maybe thas why you had to press them in...heh

 

heat the case and freeze the bearing

 

The torch ok for DaBeechMan, judging by his mods he's had a lot of experience with 250r bottem ends. But the oven a lot safer technique if you're not sure exactly what your doing. The heating works good for any aluminum part. Really handy for those tran bearing you can't get behind with a drift punch. And differential pinions literally fall out and in, instead of having to fight with the puller. Just make sure you don't drip any two stroke oil on your wifes meatloaf. hehe