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Old 08-28-2012, 12:22 PM   #1
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Grease leaking from axle

I just returned home from a weekend camping trip to Boston Ma.

On our way there I stopped for gas. While inspecting the camper (831 BHDS FLAGSTAFF) I noticed that one of the wheels was covered in axle grease. Upon touching the wheel I discovered that the rim was scorching hot. The other 3 wheels were cool.

I pulled the hubcap off, topped the axle off with grease and continued on with my trip after the wheel cooled down.

Upon arriving at the campsite same wheel was scorching hot. This time I jacked up the trailer to make sure the break wasn't sticking on that wheel and it wasn't. Pumped more grease into the axle and enjoyed my weekend.

Fast forward to trip home. Same wheel was no longer scorching hot and appeared to be same temperature as the other three wheels.

What could have caused this? Bad bearing, blown seal or maybe a sticky break that just worked its self out over the span of the trip?
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Old 08-28-2012, 12:46 PM   #2
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I would vote for a sticking brake. I don't think the other 2 ideas would be self-correct.

Regardless, check it out further.
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Old 09-13-2012, 01:49 PM   #3
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My question now is should I replace bearings and seal on that wheel? My guess is yes, if for nothing more then peace of mind.
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Old 09-13-2012, 02:11 PM   #4
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Pull that hub off and pop the bearings out. Have a new seal ready for the installation.

Thoroughly wash the bearings out in solvent and dry them. Look at them VERY carefully for pitting or rust. Remember, cleanliness is next to Godliness. Next, run them around in their races while "feeling for complete smoothness".

If the bearings pass that test, simply re-pack them (VERY well!) , install a new grease seal, and re-install the hub, set the PROPER pre-load, install the cotter and cap, and you should be good-to-go.

HOWEVER: You DID inspect the brake shoes, magnets, and wires while in there, didn't you? Did you dab "just a hint" of hi-temp grease on all the pivot points?

Under the conditions you described, the bearings should have survived the over-temp quite well, as the grease was very likely well-below its drip-point.

Only the complete inspection will tell.

BTW, if you don't know what you're doing in there, seek out help that does!

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Old 09-13-2012, 02:22 PM   #5
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Is the seal you speak of just beyond the castle nut or is it the seal you take off to add the grease to the zerk fitting? And if so can I just replace that seal without removing the bearings or as you suggest the bearings need to be inspected anyways?
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Old 09-13-2012, 04:18 PM   #6
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The seal is the the double lipped seal at the back of the hub by the axle flange. It has to be removed in order to inspect the rear bearing.
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Old 09-13-2012, 05:21 PM   #7
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Too much grease or wrong grade grease that is getting too soft when hot.

Here is the area they talk about proper grease for axles.
What grease do you use on your bearings?


The important part is
You want a drop point of at least 500 degrees F.
Also with a viscosity of a minium of 80. and higher is better.
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Old 09-13-2012, 08:20 PM   #8
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Quote:
Originally Posted by TheSasks View Post
The seal is the the double lipped seal at the back of the hub by the axle flange. It has to be removed in order to inspect the rear bearing.
At least we have to HOPE that it is double-lipped!

Mine came with singles. Cheap!

You don't have to guess what I replaced them with....

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Old 09-14-2012, 11:24 AM   #9
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Thank you for the advise. Now all I need is a day off so that I can take it apart and inspect it further.
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Old 09-14-2012, 11:54 AM   #10
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I truly have nothing to add but for some reason every time I scroll over this thread my eyes see ( geese leaking from my hub )
I need some help.
Meds possibly might work.
Coors light surly can't hurt.
Turbs
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