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Discussion Starter #1
I have a 1966 3020 diesel. How often do you normally adjust the oil pressure? Are there and issues in making this adjustment?
 

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Why do you want to change oil pressure? Is idiot light coming on at idle or has an engine oil pressure gauge been added?
 

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Discussion Starter #3
Why do you want to change oil pressure? Is idiot light coming on at idle or has an engine oil pressure gauge been added?
I added a gauge - don't trust the oil light and I like to know what my actual oil pressure is. When oil is hot gauge reads between 0-5 psi at idle. Kind of makes me a little nervous.
 

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I doubt adjusting pressure will help at idle. You can try but be sure pressure does not get too high at full throttle. What pressure do you have at full throttle? Spec is 25 - 35 psi. 0 - 5 at idle is definitely low. Low pressure at idle is usually caused by worn pump or bearings, oil diluted with fuel, or too thin of oil being used. Bearings bad in engine balancer can make pressure low also.
 

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Discussion Starter #5
I doubt adjusting pressure will help at idle. You can try but be sure pressure does not get too high at full throttle. What pressure do you have at full throttle? Spec is 25 - 35 psi. 0 - 5 at idle is definitely low. Low pressure at idle is usually caused by worn pump or bearings, oil diluted with fuel, or too thin of oil being used. Bearings bad in engine balancer can make pressure low also.
I adjusted the pressure up a bit yesterday. Will try it out today. If too high, will lower a bit.
 

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I know nothing about the engine in this particular machine, but I am skeptical that you can adjust the pressure. I suspect that adjustment is for the set point of the pressure relief valve. It would do nothing to increase the pressure at idle unless the pressure is also low at WOT because the valve is going into relief.

Al
 

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Discussion Starter #7 (Edited)
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