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[ut1391h]

I just replaced the leaking oil filter adapter gasket on my 2009 CVO Ultra. While the adapter was off I removed the oil cooler and cleaned the bugs / dirt from the fins. Seemed like a very simple task but during my road test I found the oil pressure to be 50-60psi when it has always been 30-35. Could I have done anything wrong?? 

[CVODON]

Sounds like you did, something wrong that is. Shouldn't be hard to figure out, just redo what you did again. Something is restricted.

[2smoke]

I assume when you say "gasket" you are referring to that rubber O-ring that seals against the smooth machined surface of the engine.  What may have happened (I know this because it happened to me on my '05 Fatboy with a Jagg oil cooler) is when you tightened up your oil filter you rotated the oil cooler adapter slightly and you are pinching the hose a bit. My solution was I made a wrench to hold the oil cooler adapter in place while I tighten the filter.  No more issues.

[ut1391h]

The HD oil filter adapter uses a gasket not an "O" ring between the engine and the adapter. It was leaking externally and I wonder if it could have been leaking internally too, bypassing some oil and reducing the oil pressure a little. The new gasket stopped the leak and bypass and now the pressure is higher?? I rode it for an hour today and at 2500 RPM it has about 45psi and at idle has 10psi. both numbers are higher than before new gasket and cooler fin cleaning.

[phato1]

Not being a wise a** at all, but, are you sure you orientated the new gasket correctly?

 It is possible that it needs to be placed correctly or the oil passages will be partially blocked.

[smkymtnboy]

  sounds to me like the pressure is now closer to normal. the new numbers seem more in line with what i see on my bike /bikes. though the 60 seems high unless your talking at start-up.

[grc]

Normal oil pressure is 30-38 psi @ 2000 rpm and 230°F temperature.  If the bike was up to normal operating temperature when you saw 50-60 psi, and if we can assume nothing happened to affect the accuracy of the gauge during your repair, then there is something wrong.  Most folks see low 30's for oil pressure on the Harley gauge at 2000-2500 rpm with the engine at normal operating temperatures, and if the bypass system isn't leaking at idle the pressure normally runs in the 8-12 psi range.

I would not assume everything is OK.  Something has changed, and you need to figure out what it is.

Jerry

[ut1391h]

Thanks for your responses. I have been replaying the filter adapter gasket replacement over and over in my mind trying to figure out what might have happened. The gasket has sticky on one side but is symmetrical so I don't think it matters if you stick it to the block or the adapter - I stuck it to the adapter to be sure it lined up with the passages. I sprayed the lower front of the engine and oil pressure sending unit with K&N degreaser to dissolve the leaky oil and dirt that had accumulated because of the leak and then rinsed it off with water from a spray bottle. The book says to use red Loctite on the adapter screw but I used blue because I don't like to use red on Aluminum. The one thing that is bothering me is the small plate on top of the adapter. I removed the 2 screws and plate and everything looked OK. My dealer did not have a new gasket so I sprayed the old gasket with copper gasket sealer and reinstalled the plate. Could the copper gasket sealer cause a relief valve problem?? 

[grc]

Thanks for your responses. I have been replaying the filter adapter gasket replacement over and over in my mind trying to figure out what might have happened. The gasket has sticky on one side but is symmetrical so I don't think it matters if you stick it to the block or the adapter - I stuck it to the adapter to be sure it lined up with the passages. I sprayed the lower front of the engine and oil pressure sending unit with K&N degreaser to dissolve the leaky oil and dirt that had accumulated because of the leak and then rinsed it off with water from a spray bottle. The book says to use red Loctite on the adapter screw but I used blue because I don't like to use red on Aluminum. The one thing that is bothering me is the small plate on top of the adapter. I removed the 2 screws and plate and everything looked OK. My dealer did not have a new gasket so I sprayed the old gasket with copper gasket sealer and reinstalled the plate. Could the copper gasket sealer cause a relief valve problem??

Substitute a real certified mechanical pressure gauge for the sending unit and see what the real pressure readings are.  The sending unit may be damaged or have high resistance at the wiring connection.

As for gasket sealer, when it's applied sparingly and correctly it's not likely to cause a problem.  Let it get into other parts however and anything is possible.  However, the valve you're talking about is just the temperature regulated bypass valve for the oil cooler, and not a relief valve.  All it does is block oil from going through the cooler until the oil is up to at least 180° F.

Jerry