Rebuilt the NP246 On My Dining Room Table

[wildcatgoal]

The benefits of being single (and having a dining room table acquired at a Salvation Army store). I took it out and disassembled it at my shop, but ran out of time and packed it all up, brought it home to finish. Having a hard time putting the new aluminum rear case on and I'm waiting on my rebuilt transmission anyway, so not in a particular rush to close it up just yet. Not a particularly hard job, but I did manage to almost break my hand getting it off the cross-member under the truck. Slippery thing just came on down when I wasn't ready and landed on my hand. Thankfully I had a trans jack I was pumping up and it only slid about 4" but that 4" was enough gained speed to make a grown man ask for help!

Honestly, I found nothing wrong inside except one bearing on the original rear case that sounded like death. The clutches looked almost unused. The original chain was a little looser than the new one, but not anything severe. The rear output seal was leaking and the original rear case was covered in gunk. The inside didn't have much gunk and the magnet had about as much metal as I'd expect for an untouched transfer case. Quite frankly, I damn near wasted my money rebuilding it and I'm very glad I didn't buy a reman one for a lot more because they would have gotten a core than needed one bearing and some seals and made a fortune.

I'm sure I'll throw it back in and realize I forgot some flipidydoo or didn't do something right, but we'll see. Certainly greased the ever loving out of it with trans assembly goo. DON'T get the green stuff like I did. I don't know why I got the green stuff. It sucks. The blue stuff, which I've used before, is way, way better.

Honestly, hardest part of the job was getting it out of the truck and disconnecting the main electrical connector which WOULD NOT BLOODY SEPARATE!

OH, and don't do what I did and use the impact on the poppet spring bolt (the bolt that holds the little tension spring in). Broke that fudger right off and had to order a new one... a new one that itself cost me $4 with $12 shipping. Love that... it'll be here Friday

 

[Erickk120]

These Tcases seem to be pretty solid Tcases despite operating with a clutch pack, I will give you credit the 246 is more complicated to build than the older np241 am running on mine, fully manual, so I gave up auto4wd for simplicity. I still kept my old 246 which I plan to rebuild and save in the garage, being single can be a plus def, nobody screaming at you for making a mess

 

[Mudsport96]

I remember doing a buddys 305 on a kitchen table when we were 16... his mom was less than happy

 

[JonnyTahoe]

These Tcases seem to be pretty solid Tcases despite operating with a clutch pack, I will give you credit the 246 is more complicated to build than the older np241 am running on mine, fully manual, so I gave up auto4wd for simplicity. I still kept my old 246 which I plan to rebuild and save in the garage, being single can be a plus def, nobody screaming at you for making a mess

Never had mine apart.

 

[JonnyTahoe]

The benefits of being single (and having a dining room table acquired at a Salvation Army store). I took it out and disassembled it at my shop, but ran out of time and packed it all up, brought it home to finish. Having a hard time putting the new aluminum rear case on and I'm waiting on my rebuilt transmission anyway, so not in a particular rush to close it up just yet. Not a particularly hard job, but I did manage to almost break my hand getting it off the cross-member under the truck. Slippery thing just came on down when I wasn't ready and landed on my hand. Thankfully I had a trans jack I was pumping up and it only slid about 4" but that 4" was enough gained speed to make a grown man ask for help!

Honestly, I found nothing wrong inside except one bearing on the original rear case that sounded like death. The clutches looked almost unused. The original chain was a little looser than the new one, but not anything severe. The rear output seal was leaking and the original rear case was covered in gunk. The inside didn't have much gunk and the magnet had about as much metal as I'd expect for an untouched transfer case. Quite frankly, I damn near wasted my money rebuilding it and I'm very glad I didn't buy a reman one for a lot more because they would have gotten a core than needed one bearing and some seals and made a fortune.

I'm sure I'll throw it back in and realize I forgot some flipidydoo or didn't do something right, but we'll see. Certainly greased the ever loving out of it with trans assembly goo. DON'T get the green stuff like I did. I don't know why I got the green stuff. It sucks. The blue stuff, which I've used before, is way, way better.

Honestly, hardest part of the job was getting it out of the truck and disconnecting the main electrical connector which WOULD NOT BLOODY SEPARATE!

OH, and don't do what I did and use the impact on the poppet spring bolt (the bolt that holds the little tension spring in). Broke that fudger right off and had to order a new one... a new one that itself cost me $4 with $12 shipping. Love that... it'll be here Friday

View attachment 278415

That connector is glued from the factory I have heard. mine came apart no problem. I used a regular floor jack but has a hard time getting it down on the garage floor. Some have removed them and installed them without a jack. I myself would of kicked it out and let it drop to the floor before I ever would get under the truck and try to muscle it out without a floor jack. I got so mad I tried kicking it out but it was hanging up on the crossmember.

 

[wildcatgoal]

Truck was on a 2-post lift. I had just not gotten the trans jack lifted as high as I wanted it yet and I moved and she slipped down. A mistake I got out of without issue.

 

[George B]

That connector is glued from the factory I have heard. mine came apart no problem. I used a regular floor jack but has a hard time getting it down on the garage floor. Some have removed them and installed them without a jack. I myself would of kicked it out and let it drop to the floor before I ever would get under the truck and try to muscle it out without a floor jack. I got so mad I tried kicking it out but it was hanging up on the crossmember.

These can be I slid a 246 out and set it on my chest. Put it back up without a jack. Easy peasy.

 

[Shunto]

I remember doing a buddys 305 on a kitchen table when we were 16... his mom was less than happy

Thems the good old days..... How much would you give to be back at that table?

 

[Mudsport96]

Thems the good old days..... How much would you give to be back at that table?

If i could start over at that day

... more than i care to admit.