Originally Posted by
hsukaria
The bearing with plastic cover is a "sealed" bearing and the one with the metal cover is a shielded bearing. You want to make sure that enough oil gets to the front bearing. If those seals are going to prevent oil from soaking the front bearing, then I would take the rear side seal out. I don't have any way of telling if the seal will prevent oil from entering the bearing or not. So your call.
I don't think oil will be able to penetrate the front bearing, so I will be removing one of the seals.