Posted by NCWayne on July 30, 2014 at 23:06:16 from (173.188.169.54):
Just saw a post below asking if I had solved the problem I was having getting the one main bearing back into the engine. Short answer, yes, I finally got it.
The long answer, is yes, I got it, but it was a royal PITA. I wound up taking the bearing back out of the #2 spot, and putting it in the #4 spot. The second bearing was still tight, and did pretty much just like the other one did. I got it in by bending a heavy cotter pin and putting it in the oil hole where it would hit, and carry the bearing around as I turned the crank. I then used a hammer handle to put pressure on the bearing shell to keep it against the crank journal as I turned the crank. I"d go just a little bit, and then tap the back of the still exposed bearing shell by hand with a small brass punch. Eventually the bearing went in.
I then moved on to getting the shell that originally gave me problems into the #2 spot. I chose that spot because it was the most easily accessible. It did the same thing in the #2 spot as it did the #4 spot, and stopped about half way in. I used the same technique I described above to finally get the bearing in. It took a bit, but it eventually went.
When I got done getting them all in the crank turned just as easy, and smooth as it should, and the engine ran like a top. The only thing I can think that would have caused the problem is that the top shells has a slit cut in them length wise to open the oil passage into the bearing, and it"s possible the bearing was tweeked just a touch right at the end of the slit. The shell would go in just past the end of the slit every time before stopping, and did the same at both places it was tried. I think the difference was that the #2 spot was able to open up a few thousandths more than the #4 spot because of the distance from the transmission shaft, which would have been supporting it, thus allowing the shell to slide in where it wouldn"t otherwise have been able to.
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