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Old 05-05-2015, 11:58 PM
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Broken U bolt retaining strap at 70 mph

One of the retaining strap bolts broke on the rear drive shaft, the drive shaft broke free of the yolk and started spinning uncontrollably. This occurred on the highway going 70 mph, so as you can imagine, a bit of damage happened. I'll need to drill out the broken bolt, replace all bolts and straps...but it also trashed my muffler, and completely destroyed the extension housing on the t-case (see attachment). My big questions are about the t-case. Could this have damaged any of the internal components of the t-case, or can I simply replace the broken extension housing? Is there anything else that I should replace in the process? Should I even bother trying to repair this, or should I start looking for a new t-case to drop in?

Thanks for any help!

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Old 05-06-2015, 07:26 AM   #2
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yes it can be replaced as long as you didnt lose your fluid you should be good.. if you did i would crack the case and inspect it.. do yourself a favor and replace the straps with u joint clamps.. just do a search its a popular mod..

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Old 05-06-2015, 08:02 AM   #3
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yes it can be replaced as long as you didnt lose your fluid you should be good.. if you did i would crack the case and inspect it.. do yourself a favor and replace the straps with u joint clamps.. just do a search its a popular mod..
X2 I did the U bolt conversion. You'll need a 5/16 drill bit to drill out the threads in your yoke and part # 84101 on the help section they are 2-3.00 ea It takes 5 minutes to. This would be a great time to upgrade to a sye also
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Old 05-06-2015, 11:14 AM   #4
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This happened to me as well but at lower speeds. Definitely scary, I just had it towed home got the new parts and fixed mine in about 20 mins.
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Old 05-06-2015, 11:50 AM   #5
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This is some thing that I was wondering about. It's not the strap that broke, it's the bolt. Why couldn't we just switch the bolt out with something stronger (stainless steel bolts from a hardware store for example). That would be a quicker fix than using the U-bolt.
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Old 05-06-2015, 12:25 PM   #6
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Stainless probably won't be stronger than the stock bolts. The stock bolts should be grade 8. Stainless fasteners at a typical hardware store usually come in slightly better than grade 5.
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Old 05-06-2015, 02:55 PM
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Thanks for the information guys. I'll order the new housing and will definitely replace the straps with the u-bolts. I've always found the straps annoying but until now didn't think they would fail they way they did. If everything has been running fine until this, is a SYE really needed? I just figured that since the angles were apparently okay for years, the SYE wouldn't help unless I added additional lift. Are there other advantages that I'm missing?
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Old 05-06-2015, 03:57 PM   #8
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Thanks for the information guys. I'll order the new housing and will definitely replace the straps with the u-bolts. I've always found the straps annoying but until now didn't think they would fail they way they did. If everything has been running fine until this, is a SYE really needed? I just figured that since the angles were apparently okay for years, the SYE wouldn't help unless I added additional lift. Are there other advantages that I'm missing?
longer driveshaft , fixed yoke
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Old 05-07-2015, 07:30 AM   #9
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make sure nothings loose on your case or mounts.. sometimes the tail bearings crap out and cause a vibration that make the straps fail... sye is nice but you dont really need it if you dont wanna spend the money.. the straps will do you well.. the reason you dont just replace the bolt is cause its more work to extract the broken bolt then it is to drill it out..

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