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Allis Chalmers Discussion Forum
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Oil Pressure CA Allis

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pat s

10-22-2004 15:14:10




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I bought an old CA, It has very low oil pressure. At operating speed the pressure is at or below the line of normal, in other words it never registers in the normal section. I put the proper Wix filter on it and a new gauge. Someone said it was probably inserts. I assume they were talking about rod bearings. Can I install these from the bottom by pulling the oil pan, if so how difficult is it, do you think this is the proper solution. Second will it hurt to run it this way?

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steve(ill)

10-22-2004 19:32:18




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 Re: Oil Pressure CA Allis in reply to pat s, 10-22-2004 15:14:10  
what was the oil pressure prior to the WIX? most WIX are junk. i would get a FRAM 159 and see if that does it. THe WIX has very low restriction and allows too much oil to go striaght thru it and back to sump. This kills the circulating oil pressure. That would be the first think to chekc.



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DanD.

10-22-2004 16:19:12




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 Re: Oil Pressure CA Allis in reply to pat s, 10-22-2004 15:14:10  
A lot of those old AC tractors run with very low oil pressure. Doesn't seem to hurt anything but the bearings are probably a little loose in the engine. On this engine however, the rod bearings have no effect on oil pressure since they are lubricated by splash from holes drilled in the camshaft. THe most important things on these engines to maintain oil pressure are the main bearings and the camshaft bearings (assuming the oil pump is good).

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