Well not really. What you are doing with the heat is causing the case to expand. The Alum case will expand quicker the steel bearings. To put them back in you do the same thing only in reverse. What I do when I am putting them back in is to heat the empty case again. Then place the front bearing on the crank shaft. When you pull the case out of the oven with gloves on slip the front bearing that is still on the crank into the front of the case. If you are quick you can remove the crank and place the rear bearing on the crank and slide the crank into the rear of the case and with a plastic end of a screw driver or a wooden dowel you can push on the crank to put pressure on it to seat the bearing straight. The crank should spin freely at this point, if not you will have to start over. I have never had to start over doing it this way though.

Hope this helps
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