Originally Posted by bemiiten
My plan for shimming consists of carefully measuring the assembled length of the existing shafts. After the bearings are removed , I will compare them to the new ones as well. This should hopefully result in me being abel to match the same size that came out.
One big assumption here is that they were shimmed properly to begin with!
This is uncharted territory for me so any knowledge or suggestions would be greatly appreciated.
Thanks to all for your encouragement and kind comments.
I have not rebuilt any BMW transmissions but have done a few Japanese transmissions.
The main difference I see is that the bearings are pressed on the the shafts and interference fit into the cases.
When installing new bearings into the cases I always put the bearings in the freezor over night and usually they just drop into the cases.
For installing the bearings on the trasmission shaft I would put the entire assy in the freezor over night. Then find a socket that matches the inner race on the bearing and heat it red hot on the stove. put the hot socket on the inner race for a minute then pull the shaft assy out of the freezor and the bearing should slide right on.
If you need to extract any blind side bearings from the trasmission cases Snap-On makes a blind side bearing puller.