Ron if you're planning on replacing the mainshaft bearing, you can just drive the shaft out of the case with a hammer and punch. Doing that might brinnel the bearing and ruin it, but if you're replacing it, so what?

Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.