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The cases do indeed need to be split open, and the crankshaft removed.
At that point, it would be false economy not to replace the two main crankshaft bearings which requires a bit of skill, dexterity, and luck. Oh, and special tools.
Once the crank is out, you need to remove the single flywheel bolt that "traps" the sludge tube in place in the Right side rod journal (the flywheel can stay on the crank).
Drill out the peen-mark that secures the sludge trap plug, and you'll need a large slot tool (snap-on) to remove the plug with an impact driver (the type you whack with a hammer).
There have been several good posts here about the next step which involves removing what is usually a very stubborn sludge trap from it's confines.
Once you get it removed, the likelihood is that it will be destroyed and you should replace it with a new one.
And you'd better by golly tap the new one ALL THE WAY IN, till the flywheel bolt hole re-alignes or else catastrophy will follow.
There is no need to ask how I know the last statement is very important. Suffice it to say that the use of the word "catastrophy" is not an understatement, and the use of the words "very important" in this paragraph are EXACTLY THAT.
[ This message was edited by: GrandPaulZ on 2007-03-16 22:55 ]
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