The front seals are not subjected to high pressure so the pressure relief valve does not matter here.
If the oil seal is improperly installed, that is installed too far in, it would obstruct the oil passages and under such circumstances the oil pressure would push the oil seal out.
The other possibility of improper installation is not seated deep enough. When this happens, the oil seal would squeeze itself out.
You did not provide me with much information so my first reply was what I could think of. If you require additional information or follow up, just reply to post and I will get back to you.
Monday, January 4th, 2010 AT 3:22 PM