Low oil pressure / inconsitant oil pressure
I'm a little concerned. This is a 6CTA, Ref # 53-34874-004 engine # 45358278, model C8.3-325, read that as 325 HP. When first cranked (weather cold -12, or hot 110) the oil pressure gauge on the...
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I thought someone might be interested so here are two shots of the piston and spring from the oil pressure regulator.
What happens is as the oil pressure builds in the system the piston is pushed back in a cylinder until the piston is pushed past a port in the side of the cylinder the piston is housed in. This port is a bypass allowing the oil to "bypass" the oil system there by regulating the pressure in the system.
As tolerances in bearing increase with wear, there is more oil "leaking" from the system so the piston is not pushed back as hard.
The same is true as the oil gets hot, more "leaks" passed bearing and the piston is not pushed to the point that the bypass is open.
The other thing that happens over time is the spring can become weak so it is easier for the piston to be pushed to the point that the bypass port is reached and the system pressure is lower, because of the weak spring.
I hope this makes sense.
What happens is as the oil pressure builds in the system the piston is pushed back in a cylinder until the piston is pushed past a port in the side of the cylinder the piston is housed in. This port is a bypass allowing the oil to "bypass" the oil system there by regulating the pressure in the system.
As tolerances in bearing increase with wear, there is more oil "leaking" from the system so the piston is not pushed back as hard.
The same is true as the oil gets hot, more "leaks" passed bearing and the piston is not pushed to the point that the bypass is open.
The other thing that happens over time is the spring can become weak so it is easier for the piston to be pushed to the point that the bypass port is reached and the system pressure is lower, because of the weak spring.
I hope this makes sense.
