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Old July 5th, 2014, 05:40 PM   #1
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Default GM 10 bolt axle shaft- how much wear is too much?







The pics tell the story. .014" - .015" wear on the bearing surface.

Axle is in a 1965 1/2 ton van. Now on the industrial equipment I rebuild, .015" wear generally means junk. I checked online but haven't found any sort of guideline for this.

I am considering installing a c-clip eliminator on this axle, it's also getting disc brakes- so it has to be right.

Am I ok to re-use these axles shafts or should I bite the bullet and get new ones?
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Old July 5th, 2014, 06:02 PM   #2
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Buy new ones.. they should be relatively inexpensive. . Not worth the worry in my opinion
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Old July 5th, 2014, 06:24 PM   #3
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Moser's are about $140 ea at Summit, it's just a 230 inch Pontiac OHC six pushing this thing so I don't need super heavy duty axles.
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Old July 5th, 2014, 06:43 PM   #4
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I wouldn't be worried about strength more than a leak issue
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Old July 5th, 2014, 08:44 PM   #5
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This is going to be a daily driver, the seals leak like a seive now. I do not want to do this twice, and I am not afraid to spend money to make it right.

That said, how good are Moser axles?
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Old July 5th, 2014, 08:57 PM   #6
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The c clip eliminators may relocate the bearing on the axle anyway..
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Old July 5th, 2014, 09:56 PM   #7
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Looks like it's got pretty bad spalling. Probably eat bearings fairly quick. If you're not too worried about it eating bearings you can get modern expensive seals where the lip on the seal rubs in a different spot. However, it's going to leak because the shaft slops in the bearing.

Have you considered putting a 12 bolt out of a pre-1980 truck in it?
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Old July 5th, 2014, 11:10 PM   #8
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just buy new ones,for them money you would be better off
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Old July 6th, 2014, 12:01 AM   #9
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I'm not saying money is no object, I just want to do.it right. If a 12 bolt popped up I would not turn it down, but realistically the 10 bolt is plenty.
Mostly, I wanted ti know if these are tiast, sounds like they are done.
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Old July 6th, 2014, 07:24 AM   #10
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I've used these before...
http://www.timken.com/en-us/products...rBearings.aspx
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Old July 6th, 2014, 10:55 AM   #11
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If they leak they are out of spec.
What caused that in the first place? Was it simply a lack of maintenance or a bent housing?

I have owned quite a few rides with the "light weight" 10 bolt and it is very easy to tweak that housing. Good news is that it is very easy to fix also.

I would not put any money in that axle unless your going for a stock restro look. If that is the case you can upgrade those drums with better stopping power while keeping the stock drums by changing the master and break cylinders that will outperform some disc breaks. Make sure you install a portioning valve with at least 70% going to the rear if you do the same upgrade on the front or the back tires will lift.

Does that beast have a manual or the 2 speed?

That engine was installed for safety. Even the v8's were low power units.

I have rode in a 66 with a built v8, th350, and the "it'll work" stock steering. You eventually get over the fact that the windshield is your only crumple zone and just enjoy the ride.
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Old July 6th, 2014, 12:18 PM   #12
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I expect the wear is due to being almost 50 years old.

Original drivetrain was a 230 ci six and 3 speed manual. It's getting a Pontiac OHC six and TH400.

I've been driving these forward control vans for 35 years, and have seen a few people walk away from some nasty front end wrecks. They survive better than one would guess.
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