160 diesel oil pressure
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Category: Allis Chalmers
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=50322
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Topic: 160 diesel oil pressure
Posted By: AcFordHawk
Subject: 160 diesel oil pressure
Date Posted: 09 May 2012 at 9:19pm
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Rather lengthy post, working a low oil pressure problem on my 160 with the Perkins 152 diesel. With a cold engine the pressure was 55 psi and would drop to 0 relatively soon as the engine warmed up. I pulled the oil pump out and found it was worn so replaced it. Now has 75-80 psi cold but still after quite a while will eventually drop to 0 or so after warm up. Additional info, the oil filter was a cannister type and the PO must have lost the tension spring as when I pulled it apart the filter was just bouncing around in the housing, probably not filtering. I have since changed it over to a spin on. I have been told the cam bearings could also be a culprit. Can these be replace with the engine in the tractor? The manual I have is not complete on all maintenance aspects. Anything else, main bearings maybe causing the low oil pressure?
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Replies:
Posted By: dscott
Date Posted: 12 May 2012 at 9:27pm
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Never worked on that type of perkins. But most engines lube in this order mains,cam then rod bearings. So as long as you didn't find a cracked or leaking pick up pipe, I would look at the rod bearings first. Or maybe an internal oil pipe ,say at the rocker arm area has broken. Are you using a know good oil pressure gauge.
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