A good percentage of the time, the seals are bad, but there is something causing the seals to go bad. It actually leaks because the shaft the seal rides on is tempered steel and it rusts. When that happens, the seals wont seal. Here's a picture of what I'm talking about. But there is a fix! I put some sleeves on them to keep it from happening again. You can see one put on in the second picture, left side.
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