Originally Posted By: UncleDave
Pretty sure that small hole feeds the disk filtered oil back into the outflowing stream - not up into it.
Perhaps sitting in the outflow a vacuum is created somehow? - seems a stretch.
UD
You talking about the holes the red arrows are pointing to? If those holes are wide open to the center tube then there is also dirty oil flowing through them all the time too because of the delta-p across the element. Are those holes shown by the red arrow a straight shot through to the center tube? Yep, the screw driver is on the spring loaded bypass valve which has nothing to do with flowing oil from the micro disc.
Originally Posted By: UncleDave
It looks like the bypass is tack welded in.
the screwdriver was blocking the hole - here is a diff shot
UD
That photo clears it up pretty good .... thanks. Is there some kind of seal around where the tube from the micro disc goes into the hole on the top end cap? Looks like a rubber or nylon washer perhaps?
There a sort of a metal washer thing at the top of the tube and it took some force to pull out the two units apart after I had the disk carrier separated from the end cap. It was in there fairly tight - pulling it out egg shaped the hole - you can see this a bit.
Bypass location makes total sense once I held the thing up to the light at the correct angle and realized oil flowed between the carrier and end cap.
The lighter colored area is where the disc was over the tube, it is depressed toward the tube. Not sure why this is as the spring only applied pressure around the edge.