GM's NP263HD Transfer Case teardown...is this thing any good??

[@MyLifeThai371]

I just finished rebuilding my NP 261 HD transfer case today. Thank you so much!

[@MyLifeThai371]

This is the best video I have found on the tear down of a 261 HD GM transfer case! Thank you!

[@IrocinZ]

Thanks so much!

[@davelambardo6464]

Found near exact issues with the 263 in my dad's truck tonight. I had it diagnosed fairly quickly. I found your video after. It's good to hear that what I found in his is a common failure in these. I wasn't sure how it was caused. Great helpfull video

[@IrocinZ]

Glad it helped!

[@pontiacsrule8761]

Never saw a transfer case disassembly before. Very well done video. I like seeing you struggle with things. We viewers need to see how hard like the seals can be. Too many videos show everything going so smooth which isn't the case. Thanks again.....

[@IrocinZ]

I'm glad you enjoyed the video!

[@geraldbresett6292]

Good tear down.Thanks I had that hole in my 2004 6.0 2500 HD. I am so glad I caught it but having said that you may never know you are losing oil because the hole is above the oil level and it only throws it out when moving. Will not show leak while parked.GM new about that pump rub issue. Merchant Automotive sells a good pump upgrade kit.

[@IrocinZ]

Yes they do. I actually repaired my own transfer case in another video. Thanks for watching!

[@dnlmachine4287]

Input seal starts at 30:30 and front output seal starts at 22:20 Great vid thanks for posting. Stay gold

[@jasonmartin8769]

Thank you watching your video helped me pull mine np261 apart about the snap ring from inside to pull it apart now I finished it with putting a nfw slip yoke eliminator in now I can have my front drive line cut to fit an my 2001 2500hd 6.6 sas kit done thanks again

[@IrocinZ]

Your welcome!

[@LaserLuther]

Picked up the 263XHD chain/sprocket upgrade rebuild kit and upgraded case half for my 263HD from Rigid Axle. Got a pretty good deal on the full rebuild. Thanks for the tear down.

[@IrocinZ]

Nice! And Thank You!

[@robertlundbohm7775]

I think that it the worst transfer-case I've ever seen torn down. That was a mess and I don't blame the guy not proceeding with rebuilding it. Again, another great tear down even with losing the audio portion you filled it in just right. Those seals have always kicked my butt just like it did you. I wish there was a better design but it is what it is. Thanks for another great video Smitty and Please keep them coming.

[@JoseHernandez-bx7lf]

Great video on the tear down; my 03 Chevy 2500HD transfer got a hole in the rear case, dropped all the fluid in the driveway; I was debating about rebuilding it but I may go the route of buying a refurbished. Thanks for the info

[@IrocinZ]

Thank you! Thanks for watching!

[@phillipsnow5053]

A very good tear down video. Very well done. Love your attitude. Subscribing for sure!!!

[@IrocinZ]

Thanks! Glad uou liked it!

[@sidneymeyer4823]

It's sad how that trans fluid just leaks out with little warning, my old 263 hd case was had to be the same shape if not worse. I Just picked up new 263 hd case with low miles an clean fluid for 500 so I split it apart an installed a case saver an replaced all seals so we're all good now! Nice video & thanks......

[@IrocinZ]

Your welcome. Those t cases are a little harder to find down here, but that's not a bad price.

[@FishingFlip]

@22:49 that front seal can be taken out from the rear on the rear of that shaft there’s a big snap ring you take that off then flip to the outside put wood on the shaft hit with hammer through seal that snap ring you’re talking about under the seal holds the bearing onto the shaft the snap ring inside holds the shaft in the case Once you hammer the shaft out with the bearing easily tap it through the seal flip the case over tap the seal out from the inside Hope this helps with future tear downs

[@IrocinZ]

I've never tried that, but wondered if it was possible. Great tip! Thanks!

[@MichaelMullen-vp6tl]

That’s an excellent break down and description. Doing some troubleshooting on mine. I can put downward pressure on the output shaft and get a popping noise. I’m guessing that c clip support for the bearing has come free. Have you run across this before? Thanks.

[@IrocinZ]

Only if they have been without fluid for an extended period of time...

[@tacticalrabbit308]

Well I found this highly informative and it explains why I have problems with my Chevy Avalanche not moving after I moved the 4 wheel shifter and back into 2 wheel drive and it popping out of gear and having to shift back into 4x4 then back to 2 wheel drive just to get it to move

[@IrocinZ]

Great!

[@tacticalrabbit308]

@@IrocinZ what state are you in ,if you don't mind me asking

[@IrocinZ]

@@tacticalrabbit308 Sunshine State. Otherwise known as Florida...

[@tacticalrabbit308]

@@IrocinZ Minnesota is where I'm at

[@IrocinZ]

Nice! Told the wife I want to camp there someday...all the northern states...

[@jordansimon4300]

Very good and informative video. Keep up the good work. I’m curious as to would it have been more beneficial to use a vice or stand to hold the transfer case stationary to disassemble? I am currently debating on rebuilding my transfer case myself, buying a new/refurbished (don’t know if they sell new or if they are all “new” refurbs) or having a shop just rebuild it. But this definitely helps in favor of doing myself does not look difficult at all, more time consuming than anything making sure to keep track of parts and order of which they go together. Thanks for the video and keep up the good work with videos.

[@IrocinZ]

They actually make a holding fixture to go in my bench mount that is slicker than snot. If I start doing enough of these at the house, I'll probably get one...

[@jordansimon4300]

Irocin Z ok makes sense. And I understand the reasoning as to not having the mount unless you’re going to use it consistently.

[@FirstLast-tx3yj]

@@IrocinZ which transfer case is electronically controlled to switch from rwd to awd with a switch or button??

[@IrocinZ]

@@FirstLast-tx3yj A NP246 is a case that has an Auto button that the TCCM will control the power output to the front axle depending on wheel slip. The AWD transfer case is a different animal and it's found in the Silverado SS and some Escalades and Denali's. I think it was an option on a Tahoe too, but its rare

[@ricardozatarain6574]

I have chevy Blezer k5 1970.motor 6.0 trass.4L 60 E intll.whit Full injetion my quesitos is .I need trafer case wlht seed sensor for workign my trassmition?????

[@IrocinZ]

Np231, np246, and I think a NP261 will work...

[@ntme9]

How do the GM transfer cases function in the newer GM 1500 pickup trucks with the "auto four-wheel drive" selectable mode? Do they have a clutch pack inside of them or is it gear to gear hard lockup?

[@IrocinZ]

Is there a particular year you are referring? I have not had to go into one of the Izuzu transfer cases yet and I will have to research it.

[@ntme9]

@@IrocinZ 2018 gmc 1500 Z71 with 6 speed auto and 5.3

[@IrocinZ]

If it has the NQH transfer case option, it does in fact have a clutch pack internal just like the older NP246. The case you have has 8 friction plates and 7 steels.

[@ntme9]

@@IrocinZ Thanks! Good info. So would it be safe to run this transfer case in 4W high on wet road or would that burn up the clutch pack? Or leave it in 4W auto?

[@IrocinZ]

@@ntme9 I don't recommend running a transfer case in Auto 4wd unless you are traveling on loose ground like a dirt or snow covered road. You don't need it on wet and definitely not on dry roads. I have had vehicles come Into the shop in Auto 4wd with drivability issues. Put it in 2hi and they go away

[@virgilscott6517]

This was an interesting video very eye catching.

[@IrocinZ]

Glad you liked it!

[@stanLSD40]

Great job

[@IrocinZ]

Thank you!

[@jessicathompson3112]

This video has definitely helped but I do have a question. Is the fork pad the only thing that has plastic on it?

[@IrocinZ]

Other than the oil pump pickup screen, yes. Sometimes the roller bearings will have a plastic cage...

[@jessicathompson3112]

@@IrocinZ ok. I was just wondering because I'm having to split my transfer case and found metal and plastic.

[@SuperChipperson]

@@jessicathompson3112 oil pump tube may also be plastic

[@jimbob6048]

Hey good afternoon, what type of brand are those c-clip snap ring pliers and and if possible do you have a model number or part number for those pliers? Thanks in advance

[@IrocinZ]

kzbin.info/www/bejne/bpOkeGhriZqYqq8 Watch this video and it should explain everything! Thanks for watching!

[@leoneltejeda9330]

You make it look easy 🤔👍

[@ronjohnson8119]

I know this is an old vid but does anyone know if the front case half is the same between the 263HD and 263XHD? I’ve got a 263HD and the input bearing is loose in the case (side to side and back and forth).

[@IrocinZ]

I do believe just the guts are heavier, but the cases are the same

[@ronjohnson8119]

@@IrocinZ thank you so much!

[@phonypony5.0]

What the difference between the 246 and 263 ?

[@IrocinZ]

The 246 is an auto transfer case found behind half ton and light 3/4 tons whereas a 263 is found behind 2500hd and 1 ton trucks. They are both electronic shifted.

[@MS-es9hm]

good video - why is the camera guy so shaky though?

[@IrocinZ]

Lol, I AM the camera guy. Trying to do things one handed while holding the camera is a bit tricky sometimes...The wife did help me with some of the videoing on this one and I thought she did a wonderful job for the first time helping me...

[@miguelmontalvo6687]

Hello. Can a bad transfer case make my truck vibrate as i drive and only do it at the speed of between 26 and 32ish? Miles amd hour after that i would smooth out. Please advise Thanks!

[@IrocinZ]

Not likely. I'd be looking for a bent driveshaft, bent axle, or a bad/out of balance tire...

[@miguelmontalvo6687]

@@IrocinZ ok..thanks! Its ju st odd because it only does it at that particular speed after 35mph it all smooths out?? But, any ways thanks for the quick respond! Great info and show very informative!

[@IrocinZ]

@@miguelmontalvo6687 Thanks brother!

[@izaakmadera4808]

The very first thing you do when you inspect it, when you pull and push the rear output shaft, what causes that and how is that fixed?

[@IrocinZ]

The snap ring that holds the output bearing in the case. If the case is worn out there, it will have excessive play. Other than that, there is no real adjustment.

[@izaakmadera4808]

@@IrocinZ thank you it seems like I couldn’t find the solution to this anywhere else.

[@332ARA]

I've found the easiest way to pull the front seal out is with a slide hammer with a screw.

[@332ARA]

No prying on the magnesium case

[@IrocinZ]

@332ARA I have done that, just not on that seal...great idea tho!

[@332ARA]

@@IrocinZ What is your opinion on the adapt a case pump plate? The Merchant aluminum piece is pricey. Does the plate work or is there a drawback?

[@pedub2222]

Thanks for the video, what brand of snap ring pliers do you have there? I need a good pair

[@IrocinZ]

I have several. I have some Snap-on, and some Matco. Its all about personal preference. Some work better in some places then others...

[@pedub2222]

@@IrocinZ Thanks for the info

[@adamsorell4851]

what the difference between hd and xhd physically? so the 263 hd front case half is aluminum and rear is magnesium??

[@IrocinZ]

The internals are physically bigger inside on the 263xhd.

[@joshaldrich3025]

I'm having problem getting that first snap ring that holds the rear half on back on after reassembly. Can I just rip it out or is it a necessary thing to have?

[@IrocinZ]

If you're talking about the snap ring around the rear output bearing, it is a necessity! Needs to be there for output shaft support.

[@joshaldrich3025]

I got a new rear case n figured out the rear output bearing wasn't sliding home at all so I did some scratching with fine sandpaper n got it. Hands down great video. Only one on here that did a good break down for this model. Thanks for the help!

[@IrocinZ]

@@joshaldrich3025 Sure thing!

[@phonypony5.0]

I have a 263hd and I want to swap it to a manual t case ...what manual t case would swap on to the 4l80e ?

[@IrocinZ]

It would be a NP261.

[@phonypony5.0]

@@IrocinZ oh ok thanks for the Info

[@greasemonkeybd]

I just got with a 2001 gmc 2500hd 4x4 non-working four wheel drive the only thing it does is the transfer case shift motor just has buzz noise when pressing the button on the dash and the front shift motor will not engage either. any ideas?

[@IrocinZ]

Take the encoder motor off and see if you can shift the case by hand. If all is good, prob a bad encoder motor. If I remember right, you should show some data in the tcase module with a Tech2

[@greasemonkeybd]

thanks for your time bro

[@IrocinZ]

@@greasemonkeybd No problem at all. Let me know how you fair...

[@greasemonkeybd]

@@IrocinZ ATF or 5-30 oil as some guys say on you tube for the T case? would you overfill a little as some say here?

[@IrocinZ]

@@greasemonkeybd I use Amsoil Torque Drive in mine, but any Dexron 3 synthetic is my choice. Don't use Dex 6 because it is low viscosity and will hurt the tcase longevity. Motor oil will cause sludging and I don't recommend....

[@jonathanlawson4667]

I'm getting ready to have to pull my case on my 2000 GMC sierra 4wd 1500 does it have that case?

[@IrocinZ]

Not likely. If yours is electronic push button and has 4 buttons with AUTO, then it will have a 241 case in it. If its a manual shift on the floor, I think its a 236. I'll have to look that up. The 241 case will have a clutch pack in it for 4wd, whereas the others will be mechanically linked.

[@sta1814ff]

If it has Autotrack it should be a an NV246.

[@IrocinZ]

That is correct

[@JamesWolfe-qf8xk]

Why are we now not usi

[@IrocinZ]

What do you mean by that statement?

[@willb.7148]

Do you know how to find a 2 1/4 turn high effort steering gear?

[@IrocinZ]

They're in about any z28 or TransAm if I remember right....3rd gen that is