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sreigle,
The grease seal was installed by a dealer who did the initial warranty claim for a broken spring that holds the brake shoes together. The seal was loose in the drum and had been rattling around the shaft that there was no " press fit" in drum. You could push the seal in and out of the area it is supposed to be pressed in the drum with your finger.
Brake spring. The Brake spring holds the shoes together and pulls them off the drum when the brakes are released. The first one I considered a fluke but two! There must be some bad chinese made springs out there.
I never used the grease zerk fitting in the hub so grease pressure didn't push the seal out.
I think I had an improper installation or poor machining tolerances from manufacturer of seal and or drum/hub.
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