Posted by JGarner on October 24, 2009 at 19:34:38 from (70.139.191.4):
As I was looking through the Case IH Parts lists for my 630 a few days ago comparing part numbers on my 1960 641 (630) to 500b/600b parts. It hit me that when I was replacing the very worn oil pump the lower front main bearimg fell out. I picked it up, washed it off thorougghly in clean gasoline and applied a light coating of bearing grease to lubricate during start up. Replacing the oil pump raised my oil pressure from about 3-5 psi at idle to 10-12 psi. My question is could I have put the bearing in backward and would that have any effect on communication holes or grooves and kept the pressure from coming up (I think it should be about 20 psi at idle)? At 3/4 throttle I only get about 12-15 psi now. Haven't worked her very hard, just idling or parade work so I am not real concerned, but I would like to start bush hogging with it. The rod bearings have been replaced but as near as I can tell the mains were not. Any dire consequences here for a little harder work or should I go ahead and replace the mains? I had planned to do this and a valve job as soon as I get my new shop finished so I have some room to work around the old girl.
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