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  #1  
Old December 1st, 2019, 10:25
Desert4x4 Desert4x4 is offline
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All my ring gear bolts fell out

I have a 1999 Cherokee Sport 4x4 NP231 8.25/D30HP 35x12.5R15s 4.0.


In the summer of 2018 I had 4 wheels parts install an Ox Locker. I had a re-gear done the previous summer to 5.13. I had been hearing some odd noises from the rear of the Jeep that suddenly became more intense. I removed the rear differential cover and found all the ring gear bolts were loose, many were destroyed and some were wedged between the ring gear and the locker. The ring gear bolts and holes appear to be stripped out and wallowed out. I could not reinstall any bolt into any hole. My best guess is that the tech did not know that the bolts were left-hand threaded. Also, there was no thread-locker installed on the bolts. I contacted 4 wheel parts and am I awaiting their reply.


Has anyone had any experience similar to mine? Any thoughts?



Thank you!


Mike
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  #2  
Old December 1st, 2019, 11:05
srb531 srb531 is offline
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Re: All my ring gear bolts fell out

damn, they owe you bigtime.
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  #3  
Old December 1st, 2019, 11:30
4x4JeePmaNthINg's Avatar
4x4JeePmaNthINg 4x4JeePmaNthINg is offline
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Re: All my ring gear bolts fell out

damn,

any chance the lockers bolt holes were larger than the ring gear bolts?
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  #4  
Old December 1st, 2019, 12:10
Desert4x4 Desert4x4 is offline
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Re: All my ring gear bolts fell out

Quote:
Originally Posted by 4x4JeePmaNthINg View Post
damn,

any chance the lockers bolt holes were larger than the ring gear bolts?

That is a very good question! They don't look bigger but I haven't used a micrometer on them yet. The fact that the entire length of all recovered bolts and bolt holes look stripped out would suggest that they over tightened the bolts.
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  #5  
Old December 1st, 2019, 12:38
RCP Phx RCP Phx is offline
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Re: All my ring gear bolts fell out

I would ask why you went to 4WP vs a good shop like 4Wheelers or Absolute Off-road?
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  #6  
Old December 1st, 2019, 14:15
Desert4x4 Desert4x4 is offline
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Re: All my ring gear bolts fell out

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Originally Posted by RCP Phx View Post
I would ask why you went to 4WP vs a good shop like 4Wheelers or Absolute Off-road?

I haven't heard of either shop.
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  #7  
Old December 1st, 2019, 15:16
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stockerwithalocker stockerwithalocker is offline
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Re: All my ring gear bolts fell out

What size head are the ring gear bolts? I’ve fought ring gear bolts coming loose for longer than i care to admit after my regear. I removed and cleaned/ re-loctited/torqued only for them to come loose again. Found out some of the install kits come with 9/16 head 3/8-24 bolts. Since i have spicer front/rear i discovered factory spicer ring gear bolts are 11/16 head with serrations under them. Haven’t re-installed to confirm a difference but fyi.
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Old December 1st, 2019, 15:23
Desert4x4 Desert4x4 is offline
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Re: All my ring gear bolts fell out

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Originally Posted by stockerwithalocker View Post
What size head are the ring gear bolts? Iíve fought ring gear bolts coming loose for longer than i care to admit after my regear. I removed and cleaned/ re-loctited/torqued only for them to come loose again. Found out some of the install kits come with 9/16 head 3/8-24 bolts. Since i have spicer front/rear i discovered factory spicer ring gear bolts are 11/16 head with serrations under them. Havenít re-installed to confirm a difference but fyi.

Interesting. The bolts that I recovered in the differential had 9/16" heads on them, but do have the serrations under the heads. 4 wheel parts didn't bother to use ANY loctite.


Sorry to hear about your issues with the ring bolts.
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  #9  
Old December 1st, 2019, 15:53
Black1990jeep Black1990jeep is offline
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Re: All my ring gear bolts fell out

My jeeps prior owner had all the work done for him, much by 4 wheel Parts. They are a joke of installers. I have the receipts, this was done in California.
Swing out tire carrier bumper attached to sheet metal only, ready to fall off, sheet metal all torn.

Hacked up front bumper to mount winch, horrible job. Front bumper mounted with stacks of washers, lock washers wedged into slotted holes, junky hardware used, steering brace installed wrong. gas skid plate only installed with two bolts, wrong pitman arm, control arms upside down so that grease nipples get sheared off with ground contact, no heat shielding, or any effort to cover big hole in floor other than by carpet for the Atlas Transfercase install, water and heat just pour on in thru it. horrible arb instal they mounted the compressor in the middle almost of the cargo floor, inside the jeep! (who needs cargo space, lets put the compressor there) did not bother to fuse it either! Winch control box mounted on the front of the front bumper with zero impact protection, winch wires ran under the bumper into wheel well and thru a hole that they punched with a sharp object thru the body, no grommets with one wire actually being nicked by the cooling fan, YIKES!



Just plain really bad workmanship on a lot of stuff they did, some outright dangerous.

Select your shop carefully, you have been warned

Remember just because they are professionals means nothing. By definition a professional does the work as a profession, ie to make money. There is no quality requirement for a professional. Some make money by taking short cuts, doing jobs they are not qualified for, use of inferior cheap parts. It is all about making money to some "pros".

It is hard to find a good professional.
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  #10  
Old December 1st, 2019, 16:06
RCP Phx RCP Phx is offline
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Re: All my ring gear bolts fell out

That sucks overall, I hope they have something good to report because that's going to be a expensive repair. Unfortunately I see 4Wheelers is shutdown, to bad they've been here over 50yrs with a excellent reputation.
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  #11  
Old December 1st, 2019, 17:02
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4x4JeePmaNthINg 4x4JeePmaNthINg is offline
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Re: All my ring gear bolts fell out

Quote:
Originally Posted by Desert4x4 View Post
That is a very good question! They don't look bigger but I haven't used a micrometer on them yet. The fact that the entire length of all recovered bolts and bolt holes look stripped out would suggest that they over tightened the bolts.

Ive read that some ox lockers are double drilled for different bolt sizes. My thought was maybe numbnut that installed your gears, may have threaded these in on a size that would require these type deals: https://www.yukongear.com/productdet...px?ProdID=8508

though as you say, this quality service technician very well could've over torqued or who knows what.

sure hope they get you fixed up and on their dime.
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Old December 1st, 2019, 17:18
Desert4x4 Desert4x4 is offline
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Re: All my ring gear bolts fell out

Quote:
Originally Posted by 4x4JeePmaNthINg View Post
Ive read that some ox lockers are double drilled for different bolt sizes. My thought was maybe numbnut that installed your gears, may have threaded these in on a size that would require these type deals: https://www.yukongear.com/productdet...px?ProdID=8508

though as you say, this quality service technician very well could've over torqued or who knows what.

sure hope they get you fixed up and on their dime.

That is VERY interesting, I had no idea.



I just measured the holes on the locker, and they are approximately 0.39". So I don't think I would've need those.


Thank you.
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  #13  
Old December 1st, 2019, 19:12
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Anak Anak is offline
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Re: All my ring gear bolts fell out

Quote:
Originally Posted by Black1990jeep View Post

Remember just because they are professionals means nothing. By definition a professional does the work as a profession, ie to make money. There is no quality requirement for a professional. Some make money by taking short cuts, doing jobs they are not qualified for, use of inferior cheap parts. It is all about making money to some "pros".

It is hard to find a good professional.

QFT!!!


I have battled this all my life.


Reality is an amateur may do the absolute best work. An amateur does it for the love of it (note those first three letters and compare them to the word "amor").


Then see the relationship between professional and profit.


Far better to depend on the guy who does it for the love of it rather than the guy who just wants to separate you from as much of your money as possible.
__________________
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Baby it's cold outside.
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  #14  
Old December 1st, 2019, 19:14
Desert4x4 Desert4x4 is offline
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Re: All my ring gear bolts fell out

Quote:
Originally Posted by Anak View Post
QFT!!!


I have battled this all my life.


Reality is an amateur may do the absolute best work. An amateur does it for the love of it (note those first three letters and compare them to the word "amor").


Then see the relationship between professional and profit.


Far better to depend on the guy who does it for the love of it rather than the guy who just wants to separate you from as much of your money as possible.

I agree with you sir. I will update with 4WP's response.
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  #15  
Old December 3rd, 2019, 04:55
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XJ01-08 XJ01-08 is offline
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Re: All my ring gear bolts fell out

Does the ring gear have a set of metric and standard threaded holes?

Ran into a ring gear like that doing one of my friends 8.25s, the standard bolts will go in the metric holes and will torque close to spec, luckily we had a few strip before they were up to full torque or we wouldn't have noticed.
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