[lukera]

Hey Guys,

so i am taking apart my NP231 TC to put in the new rear shaft for the new driveshaft.

I got the driveshafts off fine, i removed the yokes easily. the rear housing was a pain, but it is now off.

I started to remove the 15mm bolts so i could take of the rear part of the TC when I got to a 11mm bolt (or at least i thought it was.)

so I ended up rounding it off with the impact wrench and tried for an hour to get vice grips etc on it to make it budge.....no luck.


I then used a dremel and cut a big slot in it to try and get a monster screwdriver in there and that didn't work out to well (dumb plan to begin with).

so now i am at my wits end with a 10mm round head bolt with a standard head that won't budge.

Anyone have any other ideas for removing this little guy???




P.S. I soaked it in PB Blaster for a few hours while doing this. I tried hammering the bolt to loosen it up. I also tried heating it up.

[mike481]

I'm not sure what bolt you are talking about since I have not taken my TC apart. However, I would strongly recommend a bolt-out set. I have a craftsman set and it works GREAT!!! It has saved me several times.

http://www.sears.com/sr/javasr/product.do?cat=Hand+Tools%2C+General+Purpose&pid=0 0952162000&vertical=TOOL&subcat=Bolt-Out%2C+Taps+%26+Dies&BV_UseBVCookie=Yes


Hope that helps

Mike

[mrblaine]

Originally Posted by lukera

Hey Guys,

so i am taking apart my NP231 TC to put in the new rear shaft for the new driveshaft.

I got the driveshafts off fine, i removed the yokes easily. the rear housing was a pain, but it is now off.

I started to remove the 15mm bolts so i could take of the rear part of the TC when I got to a 11mm bolt (or at least i thought it was.)

so I ended up rounding it off with the impact wrench and tried for an hour to get vice grips etc on it to make it budge.....no luck.


I then used a dremel and cut a big slot in it to try and get a monster screwdriver in there and that didn't work out to well (dumb plan to begin with).

so now i am at my wits end with a 10mm round head bolt with a standard head that won't budge.

Anyone have any other ideas for removing this little guy???




P.S. I soaked it in PB Blaster for a few hours while doing this. I tried hammering the bolt to loosen it up. I also tried heating it up.

Was it the oddball 12 point head bolt up on top?

[Jerry Bransford]

About all you can do now if you can't get to it enough to cut the bolthead off is to remove the t-case and then cut the bolt head off. Typically a 12-pt. 10mm socket is used to get that top bolt out if that's the one that got boogered up.

[anebrich]

If you have a dremel tool and IF there's room you could always try to grind down the sides in an attemp to make a 10mm or so socket fit.

Just a thought...

[mrblaine]

Originally Posted by Jerry Bransford

About all you can do now if you can't get to it enough to cut the bolthead off is to remove the t-case and then cut the bolt head off. Typically a 12-pt. 10mm socket is used to get that top bolt out if that's the one that got boogered up.

The reason I was asking if that was the one is I have run across one or two that have a nut on the backside as well as being threaded through the case half.

Take the nut off and the bolt comes right out.

[lukera]

i didn't see a nut on the back but i think i'll go ahead and try and cut the head of with the dremel and hopefully i cut it flush.


is the TC aluminum? if so it probably wouldn't be a good idea trying to pry the case off if i didn't cut the head completely off right?

[Scotch740]

Not sure how much room you got, but could you tack weld a nut on to the end of the rounded head?

[rock_rat]

Originally Posted by mike481

I'm not sure what bolt you are talking about since I have not taken my TC apart. However, I would strongly recommend a bolt-out set. I have a craftsman set and it works GREAT!!! It has saved me several times.

http://www.sears.com/sr/javasr/product.do?cat=Hand+Tools%2C+General+Purpose&pid=0 0952162000&vertical=TOOL&subcat=Bolt-Out%2C+Taps+%26+Dies&BV_UseBVCookie=Yes


Hope that helps

Mike

x2

[fisher836]

I broke a bolt on my CJ transfer case. Like previously stated, I ground it, pulled the case apart and was left with a nub but not matter what I tried I still couldn't get it off using the nub. I ended up grinding it flat and leaving it out. If you really want a bolt in there and can't get it out, you'll have to drill it and retap it. I just siliconed it up, and tightened the remaining bolts, no leaks. Good luck! It's not as bad as you think.

[lukera]

Originally Posted by scotch740

Not sure how much room you got, but could you tack weld a nut on to the end of the rounded head?

yeah i have a little mig i could tack a bolt on there.....i'm a crappy welder though and i once i start welding stuff on the jeep i am scared that i won't stop!

[river rat]

Since you already cut a slit in the bolt head, go to the nearest tool store and buy an impact-driver. This little tool works wonders sometimes.

[sgrim80]

strange as it sounds, I had a hell of a time getting my t/c fluid fill plug out. Tried all sorts of things, it wouldnt budge. Last ditch effort I actually tried to TIGHTEN it. Tightening it was all I needed to break the threads loose and then it came out like a charm! Try it!

[lukera]

thanks guys,


i tried that impact driver allready, and i could not tighten the bolt because it was so stripped.

i used the grinder and a dremel to take the head off. all good now!


thanks again for all the suggestions