Re: Bearing Buddies
A TINY bit weeps from the seals with use, maybe, but a lot of the need to fill was that there were air pockets working their way out of the hub from when it was first packed. When the air warms and expands it can get past the seal, leaving more room. If you put several strokes worth in with the grease gun every time you get back, look for where the grease is going. Probably have a blown seal.<br />As the wheel turns it warms up a bit. And as soon as it hits cold water, it cools. Warm grease expands. Cold grease contracts. The contraction causes a bit of a vacuum. And since the (single lip) seals are mostly designed to keep the grease in water can sometimes enter when the trailer gets dunked. This is why the bearing buddies make such a difference- the vacuum can never form because the grease chamber just expands and contracts as needed. Also why you need to never fill the bearing buddy all the way, but always make sure it pushes the inner piston away from the inside the recommended amount. Keep it floating in that safe zone and all will be well for a long time.