Quote:
Originally Posted by JFP in PA
F...with the bearing partially submerged in oil, and the shaft itself cooling and pulling a very slight vacuum on the IMS bearing as the engine cools after shut off, slowly washing the grease into the shaft and out of the bearings. This is the reason that the every shaft we have ever seen during a retrofit is at least partially flooded with oil.
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+1. The real design flaw.