I just recently had to replace pass side seal. There is no evidence of a seal leaking on the back side of your hubs that I can see. Mine was oil soaked all the way around back side of the brake and drum. If you ever wondered how much of a vacuum is created at back of coach, I had oil on top of roof on rt. rr. corner coach! Not to mention the toad.
My neighbor who has a mobile OTR on site alignment and brake, suspension business repaired mine and wouldn't take any money for it. So can't help on the cost of repair.
Don't over-fill the lube!!!
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