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Rear Axle U-Bolt Source?

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Old Jul 30, 2021 | 06:11 PM
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Rear Axle U-Bolt Source?

Wondering a good brand/place to get some quality u-bolts for the rear axle on a '99 F350 SD? Previous owner worked up some kind of absurd overload spring homebrew that doesn't even allow the nuts to fully thread on to the bolts:




This crap has got to go and I'll likely need to cut it off, so new u-bolts will be needed.
 
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Old Jul 30, 2021 | 06:26 PM
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I would check with Junior at ATS (site sponsor) or SD Truck Springs.

In addition, I am glad you caught this "mod" before it cost you dearly.
 
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Old Jul 30, 2021 | 06:29 PM
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You also could try these guys....Welcome to PMF Suspension - USA Built Suspension Systems and Upgrades!
 
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Old Jul 30, 2021 | 06:45 PM
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Originally Posted by F0rdc0wb0y
I went with these: https://www.wfoconcepts.com/pr/3-Lea...ate-Pair/16869



 
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Old Jul 30, 2021 | 07:24 PM
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You might get lucky and have those half threaded nuts come off for you. You're going to need a length on them so getting at least one off intact would help with that if you are going to keep the rest of the setup.
 
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Old Jul 30, 2021 | 08:00 PM
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Second vote for https://www.pmfsuspension.com
 
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Old Jul 30, 2021 | 08:11 PM
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Originally Posted by Walleye Hunter
You might get lucky and have those half threaded nuts come off for you. You're going to need a length on them so getting at least one off intact would help with that if you are going to keep the rest of the setup.
I've already tried with PB Blaster, a hammer, and a mid torque impact. No dice. Could try heat but even if I could get the nuts off the threads on the u-bolts are very rusted. Wouldn't want to use them again.
 
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Old Jul 30, 2021 | 08:14 PM
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Originally Posted by PriusLover
I've already tried with PB Blaster, a hammer, and a mid torque impact. No dice. Could try heat but even if I could get the nuts off the threads are very rusted. Wouldn't want to use them again.
No, you're not supposed to reuse those.
 
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Old Jul 30, 2021 | 08:17 PM
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Originally Posted by PriusLover
Wondering a good brand/place to get some quality u-bolts for the rear axle on a '99 F350 SD? Previous owner worked up some kind of absurd overload spring homebrew that doesn't even allow the nuts to fully thread on to the bolts:




This crap has got to go and I'll likely need to cut it off, so new u-bolts will be needed.
Let some Hilco lube puddle up in those nuts over night and they will come right off... unless you are looking for a reason to break out the grinder/ torch
 
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Old Jul 30, 2021 | 08:54 PM
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Let PB Blaster sit in them a couple days and didn't seem to help (maybe this other stuff is better?). But there is a Milwaukee M12 die grinder with a cutoff wheel in the toolbox that needs to justify its existence...

Do the ubolt plates tend to rust out? Is it alright just repainting them? Looks like they'd hold a lot of water.
 
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Old Jul 30, 2021 | 09:22 PM
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I have used an ATF and acetone mixture as a penetrating oil with some success. Kroll is supposed to be really good stuff.

Do you have a breaker bar and a 4' or so cheater bar?
 
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Old Jul 30, 2021 | 09:48 PM
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Originally Posted by Sous
Kroll is supposed to be really good stuff.
Kroil

​​​​​​
It is

Great stuff, thin stuff. Like diesel it'll get places water doesn't penetrate/seap thru

Kroil
 
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Old Jul 30, 2021 | 10:49 PM
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I have the PMF 3/4 u bolts on my truck they seem to be good quality it’s my second set since they are one time use. Someone a while back had theirs made at a tractor trailer shop really cheap. Could be with calling around the axle is going to be a standard width easily replicated with the right tools.
 
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Old Jul 30, 2021 | 11:31 PM
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If you have a shop nearby that is specialized to suspension,they can made you new ubolts.

And longer extension bar always helps,or breaks something..
Heating is your friend.

This weren't going anywhere without heat:
 
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Old Jul 31, 2021 | 03:48 AM
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Check for a spring shop in the area, most of them have the blanks and special press to make them. I know of two in Reno that make them while you wait.
 
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