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I have a 2002 with a 7.3 that was upgraded from 2WD to a 4WD system. I have a manual shift NV271 t-case. my daughter drove it to school yesterday, or should I say she attempted to drive it to school yesterday and stopped for traffic and it wouldn't move again. Come to find out somehow all of the bolts and nuts on the studs for the T-case vanished. The only thing holding the thing on is the rear drive shaft. Can anyone tell me what size the bolts are for the flanges and the size nuts it takes to mount it back to the transmission? I am not sure how this happens, I could understand vibrating a bolt loose but to lose all of them seems odd, but that's where I am at the moment. Any help would be appreciated. (don't mind the oil all over, the o-rings on the pedestal are leaking and I will be replacing them soon)
I hope you have found your answer by now. On my manual transmission with nv271 T case it uses M10x1.5 x45 bolts, so its safe to say that would be the same size studs that you have. Maybe the previous owner swapped out the studs for bolts. I have now mine somehow get disconnected twice. First time it fell and rested on the cross member and I was able to limp it to home depot and put a couple of bolts in it until I got home. Second time it happened it ended up destroying the splines between the input/output shafts between transfercase and transmission. Not fun to replace those. After it happened twice, I am going to make sure that it is to the correct torque spec and I am putting loctite on it. If you develop some drive train clunk (sounds like bad U joints just no vibratioReplyns), you might want to inspect the splines before they become dust like mine did.
I hope you have found your answer by now. On my manual transmission with nv271 T case it uses M10x1.5 x45 bolts, so its safe to say that would be the same size studs that you have. Maybe the previous owner swapped out the studs for bolts. I have now mine somehow get disconnected twice. First time it fell and rested on the cross member and I was able to limp it to home depot and put a couple of bolts in it until I got home. Second time it happened it ended up destroying the splines between the input/output shafts between transfercase and transmission. Not fun to replace those. After it happened twice, I am going to make sure that it is to the correct torque spec and I am putting loctite on it. If you develop some drive train clunk (sounds like bad U joints just no vibratioReplyns), you might want to inspect the splines before they become dust like mine did.
I am not understanding bolts with nuts. I just installed my transfer case about a week ago and there are only bolts through the adapter plate into the transfer case.
you mentioned studs and nuts in the original post. I have the 6 speed trans on mine so things might be different and I was just saying what the bolt thread size I had so you could reference that if you needed to purchase new bolts/nuts/studs.
Just make sure you torque down those bad boys to spec. I torqued down 4 of the 6 (top two were cross threaded and I just put a bunch of washers between until I could get it "snug") the first time mine separated and it managed to slowly rattle them all loose again until I had none left.
NV271 T-Case
