I've recently replaced the lower timing chain cover oil channel seal as it had been leaking. Somewhere on the web I read that it might bea little easier during re-assembly to remove the crank shaft collar that drives the oil pump and only put it back in place once the timing cover is on as it's easier to turn the pump to align with the collar. All very well and good but in the heat of the moment during re- assembly while one is maneuvering the timing chain cover into place, it having sealer on its surface, one is likely to do what I did, which is get the cover on then bolt it into place and sit back. Later I went to put on/in the collar and found the timing chain cover ever so slightly off to one side making it very difficult to get the collar on/ in. I finally got the collar in/on then put in the oil seal. I finished reassembling and added fluids. Then I found the main oil seal was leaking. I re-seated it and coated it with heavy grease. Leak stopped until the oil finally started making its way past the heavy grease. Okay. I have choices. I can try removing the seal and replacing with an OEM. If that fails, then having the oil seal internal spring I can try putting two springs in the one seal. If neither of those tactics work then it's do the whole job over again for this second, albeit much slower, oil leak.
I've recently replaced the lower timing chain cover oil channel seal as it had been leaking. Somewhere on the web I read that it might be