Can a One Piece Axle warp? - JeepForum.com

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post #1 of 16 Old 01-17-2010, 11:13 AM Thread Starter
CJman77
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Can a One Piece Axle warp?

Is this even possible?

I am having a one piece wobble and I think its poor spacer grinding to blame. I dont believe a hardened steel axle can warp or be bent. Can it?

Brian

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post #2 of 16 Old 01-17-2010, 11:59 AM
Mike Romain
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I have seen (and done) way more than one axle bent so they sure can. Usually from a sideways slide into a curb in the snow, but it can happen off road too.

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post #3 of 16 Old 01-17-2010, 01:54 PM
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Have a machinist dial indicate it between centers on a lathe.
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post #4 of 16 Old 01-17-2010, 03:57 PM Thread Starter
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Quote:
Originally Posted by 80cj View Post
Have a machinist dial indicate it between centers on a lathe.
Okay well i have some major issues.

When I put the rotor on and turn the axle I have a wobble. So where do I start? I guess I need to have the axle tested like 80cj says?

Any other suggestions?
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post #5 of 16 Old 01-17-2010, 04:43 PM
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When you turn the axle without the rotor on, does the axle flange seem to run true?
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post #6 of 16 Old 01-17-2010, 05:04 PM Thread Starter
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Quote:
Originally Posted by 80cj View Post
When you turn the axle without the rotor on, does the axle flange seem to run true?
Not sure. It really does seem to run true.

But the rotor makes it look wobbly. Could I really just have a rotor warped that badly?

I just checked to a straight edge and it seems straight. But I dont know, once I put brakes and everything on I have rubbing issues with the brakes.
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post #7 of 16 Old 01-17-2010, 06:14 PM
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Get a dial indicator and check both. Its really easy to warp a rotor if you have brake problems.
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post #8 of 16 Old 01-17-2010, 06:19 PM Thread Starter
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Originally Posted by thantos858 View Post
Get a dial indicator and check both. Its really easy to warp a rotor if you have brake problems.
Rotors are brand new.
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post #9 of 16 Old 01-17-2010, 06:50 PM
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I don't know if you could apply this spec to the rear discs but the Jeep specs for rotor runout on the front discs is .005".
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post #10 of 16 Old 01-17-2010, 06:50 PM
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Doesn't matter it all comes from China! You can buy a cheap dial indicator and a magnetic mount from Harbor Freight around $20. I know that you have been having trouble with the pads rubbing but you never said if it is in a certain spot if they rub all the way around. One way to tell if it's the rotor, switch with the other side

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post #11 of 16 Old 01-17-2010, 07:08 PM Thread Starter
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Quote:
Originally Posted by wrongway92407 View Post
Doesn't matter it all comes from China! You can buy a cheap dial indicator and a magnetic mount from Harbor Freight around $20. I know that you have been having trouble with the pads rubbing but you never said if it is in a certain spot if they rub all the way around. One way to tell if it's the rotor, switch with the other side
Yeah It def a certain section that they rub
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post #12 of 16 Old 01-18-2010, 12:06 AM
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That tells you that something isn't straight. I would change sides if it's not to much trouble. I want you get all the bugs worked out, as soon as the weather gets better I will be doing mine. Make sure that there is nothing on the axle mounting surface and on the inside of the rotor. If the parts house where you bought them turns drums (Kragen, Oreillys) they can put it on the machine and tell you how much it's out.

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post #13 of 16 Old 01-18-2010, 08:20 AM
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I lot of the new rotors are made to be turned before you use them.
They are all made in china now and are junk.

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post #14 of 16 Old 01-18-2010, 04:46 PM
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who did you get your one pieces from? i would definately start by checking the hub run out. are you doing the disk upgrade at the same time you are doing the 1 piece?

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To reiterate for the 1,067th time, when towing...
remove rear axle, xfer in N, trans in 5th, remove neg batt cable, key to Run and go??
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post #15 of 16 Old 01-18-2010, 06:08 PM Thread Starter
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Quote:
Originally Posted by Redmanchew View Post
who did you get your one pieces from? i would definately start by checking the hub run out. are you doing the disk upgrade at the same time you are doing the 1 piece?

Yes doing the disk also. I am doing a frame off. Had the diff rebuilt with a new ring and pinion by a local shop.

Okay So I got a magnetic base and dial indicator. Both axles are less then
.007 off. They are identical. However the rotors are approx .02 or a bit more off at certain points. (Kinda off both directions)

So I think I will have the rotors machined a little and then if it drags at all after I will sand the pads a bit. I think everything is okay. Mainly Cheap Rotors to fault.
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