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Old 07-14-2015, 11:02 AM   #1
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Hub rear seal leaking

I do have a problem with the hub rear seals leaks on two wheels. I tried seals from different manufacturer, but still no luck. I check the spindle for scratches, they are perfect, take the measurements, they are 2.25" how they should be. Using Valvoline Durablend semi synthetic grease. Other two hubs don't leak. Any idea what should I try ? Different grease....
THX milos
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Old 08-09-2015, 09:12 AM   #2
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Is it possible / likely that after installation, that the hub / bearings were already full of grease and more was injected, forcing it out the seal? Seen it before. People seem to think they need to "give a few pumps of grease" every year (or however often) and then they experience this symptom. I guess they think grease evaporates. LOL!

If you need to inject more grease, it must have not had enough to begin with. If it has enough, add more will not help.
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Old 08-09-2015, 11:10 AM   #3
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But I think, if this will be the case, I will see grease immediately, right ? But grease start to leak after I am towing the trailer for some miles...
milos
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Old 08-09-2015, 11:18 AM   #4
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is it possible that an axle may have been changed? there are 2 different sizes in the 5200/6000 pound axle range. maybe one axle requires a different seal...ive seen it happen personally...
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Old 08-09-2015, 01:36 PM   #5
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Both axles are 7000 # rating, problem is that one side is a leaking, but other side on same axle don't.
milos
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Old 08-09-2015, 01:42 PM   #6
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Originally Posted by milosusa View Post
But I think, if this will be the case, I will see grease immediately, right ? But grease start to leak after I am towing the trailer for some miles...
milos
Not necessarily. The first thing a leaking grease seal on electric brakes (drum type) is reduce or nearly eliminate braking for that wheel. And you may or may not notice that.

I'm doing the yearly inspection on our 2014 Columbus 365RL now and found the left front seal has been leaking, reducing or eliminating braking on that wheel and there was no external evidence. The only symptom we had was some pulsing / bucking under heavy braking (and I really only noticed it over the last two trips (about 2,000 miles).

The point is, that the manufacturer recommends a yearly inspection and I follow that. The first one showed no issues. This second one showed two so far. The leaking brake seal and excessive calcium deposits in the water heater.

The water heater I figured out when I flushed it, then inspected it with an inspection camera (Harbor Freight Cen-Tech - Item#61839) and saw all the calcium chunks and flakes in there. Repeated flushing did NOT remove it. But fabricating a bent tube and attaching it to a wet vac did. Took about 30 minutes to completely flush and clean the water heater and install a new anode rod.

I believe in the old adage, "If you want it done right, do it yourself."
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Old 08-09-2015, 01:48 PM   #7
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driver side by any chance? could it be that the brakes are disconnected on the pass side causing excessive heat on that side and grease to liquify and force past seals?
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Old 08-09-2015, 01:52 PM   #8
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I don't have electric brakes, but the disc brakes. But agree with your statement 100 % , if want to done it right, do it yourself lol
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Old 08-09-2015, 01:58 PM   #9
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driver side by any chance? could it be that the brakes are disconnected on the pass side causing excessive heat on that side and grease to liquify and force past seals?
Actually the leaking is on passenger side, and I am sure disc brake work on both side of the trailer.
milos
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Old 08-09-2015, 02:01 PM   #10
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Both axles are 7000 # rating, problem is that one side is a leaking, but other side on same axle don't.
milos
Is it possible that that side is running hot due to a bad bearing or dragging brakes? If the grease it heating up it will melt and leak out.
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