Oil filter broken seal

When went to change my oil filter on R60/5, I found the sealing ring at the oil filter cover end torn on the filter. The filter was the right one. Never have seen this before. Anyone have any experience with this situation?

Can't say as I remember something like that. Either it was defective and split in use, or it was put in at some angle and then as the cover was tightened down, the force caused the rubber to split. Does the inner cover for your style of filter cavity have it's own o-ring that seals on the outward edge of the filter? Could you maybe show a picture of what the inner cover looks like?

If you didn't see any oil pressure flickering light on the speedo, then you're probably OK. Good thing you found it.

Is there an old seal at the back of the cavity?

The cover is resting on the header and held up by the engine stud. The seal is flush to the center stud before the cover is installed. The filter gets squished pretty hard when the cover is installed. Will not lose oil pressure as long as cover is tight. Oil will not be filtered with defective seal. There is nothing inside the canister to prevent filter going in all the way.

My /7 doesn't have that inner cover, so I'm not that familiar with it. But it appears that the inner cover has a deep well center section which is supposed to fit over the large black o-ring of the filter. My guess would be that when the cover was slid on, it caught the edge of the black o-ring and tore it as the cover was pushed into place...or the o-ring was defective in some way and was torn when the cover was put on.

Or...since I can't quite tell the dimensions...is the lip of the deep well on the cover designed to fit on the edge of the large black o-ring and compress it a bit when the inner cover is tightened in place? In other words, not fit over the black o-ring but just push the edge of it to make a seal?

There may be some useful info on Anton Largiader’s website: http://www.largiader.com/tech/filters/

Best,
DeVern

It looks to me like the filter is not very well centered in the inner canister. Is it possible that this may have been a factor? As a general rule, this oil filter cover is nearly impossible to screw up.

Thats a clean looking motor.
I wish mine looked like that!
Nick
1978 R80/7

The cover will center the filter when installed. Pushing in on the filter to seat it, the rubber seal is flush with the stand tube. There is a lot squish on the seals when the cover is installed. The seal just butts up to the cover flange, not over it. This has never happened to me before. I can not see how anything could change. Maybe just one of those things. I will put it back together, run it when weather is warm, and see if it happens again when I do the next oil change.
I have looked at Anton’s site and measured filter. All checks out good.
Thanks for all replies,
Doug