Sucks very much bad dude. Kevin has a spare 9" laying around. Was that the center chunk or the diff housing itself?

 

Hey, what happened to that thing? Cant really tell from the pics....


Hey, do you want the 9" i have? The housing needs a little work, but you could at least put the third member and shafts into your housing. PM me and let me know whats up

 

OUCH....sorry to see that.

 

Yes the housing is stll in tack but the third member has been completely shatered maybe this will be a better pic

 

Maybe this is a little off topic and the wrong time to say this but is that your E-brake cable? Was that like that before this happened? Does it get hung up a lot?

That is a better pic by the way. SUX

 

Yes thats my e barke cable but no It wasnt like that before another result from the exploding diff

 

ouch that sucks
search ebay i've seen a few third members on there

 

Here's pics of the third member i have. Let me know if you need any other parts for it, and ill bring what i got

 

Do you still have the whole assembly I need to put something back under the truck until I can get it stripped the rest of the way down hauled off to the dump. I would also like the axles

 

the axle is complete, but the housing needs work, which is why i was gonna just part it out. I edited the link above to include pics of the shafts.
The passenger shaft needs a new axle retaining plate, but you could take one off of yours to make it work. The housing needs a backing plate for the passenger side brakes, and it needs a shock mount either welded or replaced. If you want it, it yours, otherwise im just gonna scrap it

 

Yeah I need it all even if its just long enough to get the truck on the trailer all I need for it to do is hold the truck up and roll it around for a month or so So please bring all the parts for it you have

 

Sorry to see that 80B...you have to wonder like you said...it does look like maybe the bolts that were used for the skidplate and the third member came loose, then that allowed the pinion gear to take control and twist the whole thing off???

 

That sounds like a pretty good theory there Juice. Did the skid plate come with new longer bolts, or did you have to reuse the old ones? (If so, then maybe they ended up being too short?)

Tony, me and Steve will be heading your way Sunday, (leaving) around 9am. Ill bring everything i have for the 9", and you can take whatever parts you want.

 

Copy that you have a complete 8.8 drum to drum sitting on my garage floor all I had to cut were the e brake cables and the brake line coming from the rear cross member to the rear disribution block thingy

 

before and after

before and after you tell me what you think happened

 

Re: before and after

how much did you torque those bolts on the skidplate to? it's hard to tell where exactly it broke off from that pic so i dunno

 

Re: before and after

I had suggested to 80B that the skid may have been the culprit. I don't know much about the 9", but if those front bolts used by the skid also hold the pinion in there, then I would think this skid is a no no.

It is not the same thing as the protection we had been discussing for the 8.8 rear cover. You hit that type of protection, if designed proper, nothing should happen. Worst case scenario would probably end up being fluid loss.

It is hard to see that one pic 80B, which is why it is hard to conclude anything. Is this the same skid WD-40 is using?

 

Re: before and after

Wow! Major carnage. I'm back. Broken hand and all.......but that's another story.
Sheesh, 80Bronco, that's horrid!
Did you hit something hard?
I've slid mine over a few "obstacles" now and then, and never a problem.
You did have the correct torque specs, didn't you?
Man, I can't believe how bad that expoded.

Could have broken the pinion carrier bearing casting, and that caused the rest to go.
Get some pics of the 3rd member and pinion once it's out.

 

Re: before and after

Copy that will do on the pics once its out. I didnt hit anything just a little hole shot at 3000 rpm or so on dirty and the tires just wouldnt spin and the diff gave out I think maybe the bolt worked loose after the install. What are the torque specs on the front bolts.

 

Re: before and after

here are a couple of pics from the pass side

 

Re: before and after

another showing the ring gear notice the chips from the forced seperation no tire spin here

 

Re: before and after

again

 

Re: before and after

Without the shop manual on hand....
(IOW, estimates)
3rd member nuts - 15-20lbs-ft
Pinion carrier bolts - 40-45lbs-ft.
I used lock washers on all the fasteners that went through the skid plate.
I also re-torqued the other 2 bolts on the pinion carrier that aren't used for the skid plate.
Basically, to ensure they were all on at the same torque value.

I'm still thinkin' something went totally wrong in that diff.
I was tachin' at 6,000 in low range up a mega steep mega icy hill on our last snow run, and certainly didn't have the mayhem you did.
Man, I'm hurtin' for ya.
Looks like the skid needs some work to use again as well.

 

Re: before and after

Yeah it will need a few minutes with the mighty sledge before it will fit again. I am still tring to decided if I am going to reuse it or not I am kind of scared of it now. I have the same kinds of thoughts that juice has
hate for it to be a big waste of money on that diff guard but then again I dont want to have to replace the rear diff again until I am ready to regear

 

Re: diagnosis?

Have you pulled the whoe rear apart yet? If not, wait till sunday, cause id like to snap some pics with the digicam. We might be able to shed some light on exactly what happened back there if i can get pics of everything online for people to throw ideas at.