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Old 04-12-2015, 10:13 AM   #1
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Possible issue with Dexter Axles

On the way home from Washington DC we had a wheel sheer off the hub while cruising down the highway. Thankfully no one was hurt and the wheel was recovered. But in looking up replacement parts on Dexter Axels web site I have found that for the D60 axel they have changed the design of the hub. So I am wondering if they had a flexing issue. Instead of the star pattern I have they are now a full circle pattern on the hub. Hope to find out more tomorrow when I call Dexter. I have included pictures. Of the six studs two sheered flush with hub, four sheered inside the hub.
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Old 04-12-2015, 10:22 AM   #2
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My first suspicion would be the studs were over torqued rather than the hub flexing.
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Old 04-12-2015, 10:34 AM   #3
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Quote:
Originally Posted by OldCoot View Post
My first suspicion would be the studs were over torqued rather than the hub flexing.
Or a bad batch of off shore wheel studs?
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Old 04-12-2015, 10:34 AM   #4
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Old 04-12-2015, 10:55 AM   #5
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Here is the link to the new version of hub assembly if you want to compare the difference.
Dexter Axle - Trailer Axles and Running Gear Components - Hub-Drum Kit
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Old 04-12-2015, 10:58 AM   #6
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I would normally agree Old Coot but I showed my Dad (34 years in auto industry) the pictures and he said that it was very unusual in the way the studs sheered. Plus adding the design change I'm wondering if it was a combination of issues. Over torque plus flexing hub causes Seat pucker while towing. But I will let everyone know what Dexter has to say when I call them in the am.
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Old 04-12-2015, 11:01 AM   #7
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comparing the two pics of the hub I would say its still a case of over torque or bad wheel studs. I have seen wheel studs sheared off like this before but it was due to high torque applied to the DRIVE wheel, yours isn't a drive wheel I know. Just my opinion.
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Old 04-12-2015, 11:20 AM   #8
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In my opinion, if it was a shear, there would be distorted threads and the pictures show none. I will agree that it could have been a bad batch of studs, but over torqueing is still the best bet.
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Old 04-12-2015, 04:01 PM   #9
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Agree with old coot

Had this happen once in my rving history and it was traced back to over torquing by a rookie.
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Old 04-12-2015, 04:09 PM   #10
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Maybe check what is the torque on other wheels, it may give you an indication, especially if it was done at a dealer.
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