[AJD] crankshaft bearing replacement

[wwwayne johnson]

I know of one case where the crank cleaned up ok and only the bearing was 
relaced.  Mike the shaft carefully after cleanup and go from there.  If its 
within specs, can do.  Usually only the aluminum bearing tears up if it was 
short exposure and if it only damaged one bearing, you're probably ok.  Id 
cleanup and check before I pulled the crank.  If the crank is out of specs 
after cleanup, the crank will have to come out.
Merle Wayne
----- Original Message ----- 
From: "kreig" <astroguy at nas.com>
To: "Antique John Deere mailing list" 
<antique-johndeere at lists.antique-tractor.com>
Sent: Monday, June 19, 2006 11:22 PM
Subject: [AJD] crankshaft bearing replacement


>I purchased a 620 a few years ago with a siezed engine.  My investigation 
>showed that gasoline in the oil caused a loss of lubrication and one spun 
>bearing on the main crankshaft.  The engine turns perfectly by hand or 
>starter but obviously needs a bearing replacement.
>
> Is it possible or practical to remove the flywheel, main bearing covers, 
> R&R the main bearings on the left side only and reassemble?  Or do I need 
> to pull the whole crankshaft? This is not a project for the coming weekend 
> but am thinking of a project for the coming winter.
>
> Thanks,  Kreig
>
>
>
>
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