ANY time you disturb a seal that has been run it needs replaced.
That being said most of the time you don't remove them without damaging them.
As for the bearings clean and inspect them.
Look for pitting and corrosion or discoloration. If they look good run them.
You completely over read what I was saying.
As I said before use a press or mag drill ATTACHED to the case.
The hand drill was just as a example of how different a mill is than a bit.
Take your end mill chuck in a hand drill and tell me how much it pulls to the side. Also a cheap press with side to side play doesn't make a round hole.
There is a lot of sidways force from that cutter. Its a lot different than a drill bit.
A couple other notes.
Weakening the case is not a factor here as the factory cast the case the same for a as or diesel so there is plenty of meat there for extra holes.
Also I don't think standing it up in a drill press will work unless its bolted to the press. A much better option is a...
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