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Posted

Ok guys I tore my diff apard anfrer shearing the ring gear bolts. Drug my butt after rearing it down, yesterday while placing a McMaster Carr order I searched the board for the part number and added the bolt s to my normal order. They showed up this morning and I realized they are long , really long. I grabbed a set of calipers and mic'ed the carrier and ring gear and come up with about 16mm in length.

 

So the question is why in the worldvare the bolts that folks talk about 40mm long ? Are you guys ordering them long so that they have a shank at the top where they go thru the carrier & cutting them off ?

 

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Posted

Yes!!! that is exactly the reason. I am the one who started the act of using these bolts, my reasoning being that the thread acts as a place for the bolt to start shearing, just cut them all to length and remember, you have to grind the head down also, I think I posted a photo of that also.  to grind them down, I used a drill and a grinder, and I never did agree with those who put nuts on the bolts, 

AND while you have access to the mating surfaces, sand them so the locktite has a little more to grab onto when you apply it to all the very clean surfaces and bolt when you do your final assembly. 

did you find any instruction on how to do all this or have they been lost?

Jeff

Posted

Jeff I didnt find any instructions. I cut the bokts to legth and shimmed the pinion to sit as deep as possible. I realized why these diffs break. They are junk. Lol . I can't shim the carrier to adjust back lash. Well without maching the case to allow for the carrier to move

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Posted

I have been cleaning my garage and ran into the original instruction papers that Lenny sent out with the shim kit. I'm wondering if there's much interest having them posted and the hassle of copying everything. We'll see!

Jeff

Posted
12 hours ago, bigdan120 said:

Could just take photos and post up... Be easier imo. There's some that will benefit in the future I'm sure.

please take some photos of the bolt heads and how much machining you had to do for clearance.

Posted

Ah man now the direction come out, too late for me. The lousy part was I spoke to Silver bullet and he said he had never heard of anyone shimming the spider gears. I had planned to do that just like I do in other diffs. I sorted thru my shims and found what was need to shim the pinion but didn't see any shims behinde the bearing on the carrier to tighten backlash anymore. Now I wish I just went with my plan and shimmed the spiders. I could have ordered plenty of shims. It is better but not ideal. Hopefully it lasts another few years an I can reset up as I'd like later. Bad thing is I tigged the spider gear shafts to the carrier as per Silver bullet but I could easily dress the weld with an endmill and pull them out

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