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Bad Drive seal leads to bad Bearings
Hey Guys,
Getting my Drive seal replaced today… the pulled the hub and both bearings are toast. I will post pictures later.
They are going to pull and check the other side.
Since we have it all pulled apart might go ahead and replace 315s while I have them off. Anyone have a current price with the advantage program. They are telling me $750 a tire. Here
Thanks
Bill
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12 Replies
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Ok here is the photo.. Coach has 105,000 miles. Techs here don’t think this is a lube issue as Diff was full.
As a precaution I am going to have them pull and check the other side and drain and change the Diff oil. Lots of crap in hub. If anyone has any other suggestions post here or call me 314-956-9336. Thanks Bill
1999 XLV X-6872, liberty #440 -
WOW! Do you do a lot of heavy towing or very high speeds?
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No heavy towing or high speeds….
Bill
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Bill has his bus at a shop that has not only done a great job in pointing out the problem, but in recommending a course of action that includes bearing replacement along with the races, draining all differential fluid and generally making sure everything is clean and the way it should be.
His bearing issue would have gotten very bad very fast had this not been caught.
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Bill that’s a scary bearing, good catch! Crap in hub, hmmmm. My guess: pin hole breather in rubber plug becomes blocked (say with crap), hub makes a new breather such as the inner seal, but hub needs more breather volume so it blows out the rubber plug and is happy, crap enters the plug hole, you see the wet inner wheel triggering a look, and discover that the crap was trying to eat a bearing.
Was that the inner or the outer?Wrong axle, never mind, thanks Peter.
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That’s a drive axle there is no rubber cap with pin hole in it , it breathes out the vent on the rear end,
thats why it’s important to check for seal leaks , it was probably the foreign mater in there from the bearing that caused the seal leak, nice catch Bill
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Jon, AL, Peter,
Thanks for all the calls and comments. PC is great to have people to call to confirm the right things are being done. I have never seen an axel all broken down, seals bearings etc.. as soon as I noticed the leak I got this appt scheduled and it was only a 40 mile drive to the shop from my barn. The guys could tell I caught it early but as Jon mentioned it could have gotten a lot worse pretty past. This shop has a fleet of Busses and they have never seen one this bad that didn’t come in on a tow truck.
I also replaced all 4 drive tires. Tread was 6/16th. Tires were only 4 years old but probably 50K miles.
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How back did the races look?
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Races didn’t look as bad as the techs would have expected… I didn’t take picture of those or keep them. But I did hang onto the Bearings and will bring to the next no rally rally..
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6/16 is 12/32 and that is still a decent amount of tread. Did you mean 6/32?
On commercial vehicles the minimum allowable tread depth is 4/32 on steer tires and 2/32 on drives & trailer tires. That’s a bit thin for me…but it’s legal.
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Here is a graph showing failure reasons…..
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Are shop replaces two or three sets a day and most of the time it’s because of dirty rear end oil or old how ever you want to say it
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