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Yes SirDid you confirm that the pressure relief valve operates correctly?
Attaching an oil pressure gauge will eliminate the possibility of a bad sending unit. Beyond that, I’d expect the next three things to check would be proper sealing of the filter cannister, the possibility of a broken or weak spring on the relief valve (it may spring back when pressed, but at what pressure?), or a failed woodruff key on the oil pump.Replaced the center pipe. Oil pressure light is still on…….
I tested the pressure again - it’s less than 4 psi which is the bottom of my gauge (Lang). I have confirmed the switch works with my multi meter. I will drain the oil and confirm the canister and pressure relief valve - Is there a pressure test for the relief valve?Attaching an oil pressure gauge will eliminate the possibility of a bad sending unit. Beyond that, I’d expect the next three things to check would be proper sealing of the filter cannister, the possibility of a broken or weak spring on the relief valve (it may spring back when pressed, but at what pressure?), or a failed woodruff key on the oil pump.
Best,
DeVern
Yes - but do you think it’s an indicator of spring fatigue? My understanding of the valve and how it affects oil pressure is pretty basic - if the valve gets stuck open, it causes a drop in oil pressure. If the valve gets stuck close, it causes pressure to rise. I am not sure how to measure or gauge a spring to ensure it’s within spec or that the valve is operating correctly. So I am going to replace the spring and piston.0.4mm difference? That doesn't strike me as a significant amount.
It would be a great idea to pull the oil filter back out and use a mirror to see thatHopefully looking for some insight. I completed a thorough 600 Mile service today of my recently rebuilt r90/6. Everything looked good on the bike, it runs well, all the fluids looked good. Had to adjust my valves slightly (all 4) - but my oil filter was an absolute pain to pull out and was just as difficult to install the new one. Outer cover plate and inner cover had no issues. I had to pry it out with a pick and needed to tap the new one in. I am waiting to seal it up until I know what’s going on.
Any help would be appreciated.
If the oil filter is not a factory part, you can run into issues with the rubber end coming off the filter interfering with the new filter, verify the rubber seal is not in stuck in the filter canister,Hopefully looking for some insight. I completed a thorough 600 Mile service today of my recently rebuilt r90/6. Everything looked good on the bike, it runs well, all the fluids looked good. Had to adjust my valves slightly (all 4) - but my oil filter was an absolute pain to pull out and was just as difficult to install the new one. Outer cover plate and inner cover had no issues. I had to pry it out with a pick and needed to tap the new one in. I am waiting to seal it up until I know what’s going on.
Any help would be appreciated.
If you’re using the hinged filter there is a little more wiggling required, no reason to use the hinged filter unless it is required,The only thing I can think might be the issue, with everything being original, is if the tube has an arc in it, in the center and being the hinged filter it has it tight to one side in the center of the run. I don't think it would be an issue if it was the one piece filter. Just a guess.
Thank you. I went back to the 1 piece filter. I also tore the front and bottom end of the bike apart - looking at the sump, oil filter canister, and oil pressure valve above the timing chain. I was finally able to get my oil pressure up - and when I reinstalled the switch (after taking off the oil gauge), the light went off immediately after starting the bike. I will verify timing again before I button up the front end and hope to test the bike this weekend.If you’re using the hinged filter there is a little more wiggling required, no reason to use the hinged filter unless it is required,
If the tube was bent I doubt the filter cap would fit