Rebuilding the NP231

[@bighunter5476]

i am a mechanic and i can tell this guy is a great mechanic, thank you sir for this video

[@DForce0]

Oh man. You saved my ass in the end with that little rubber O-ring on the front yoke splines. When I took that off, I thought it was just RTV and I tossed it. A week later after reviewing this vid, I dug through the trash and luckily found it. Impacted the yoke off and replaced it. Didn't see that mentioned on any other vid. Thanks for the detail!

[@redrum2715]

I have sepent the last 3 weeks looking for how the input bearing go's. Finally found it on the video, thank you

[@mommymilestones]

2 seconds in... Trailer Park Boys..... A+ and thanks for the demo!

[@paulnunya3429]

Yeah, I have been in the same boat. Sometimes I couldn't find the tool, it was late at night or I didn't have the money. I saw a rude comnent about it and thought it was pretty arrogant of him. You can't always have every fricking tool on earth at your ready. I thought you handled it very well and got the job done with what you had without damaging the housing. A perfect world if we had every special tool in our tool boxes.

[@donoudekerk4474]

Really easy way to pop that bearing is like you would pop a pilot bearing in the end if a crank. Pump bearing hole with grease then with a rod that matches the inner bearing tap it in. The grease will hydraulically push that bearing out like butter.

[@axelgrowingupchannel3010]

dude your videos are awesome thanks for the help. it's great how you keep it real. some people don't like it life goes on.. it's not that serious

[@essebug1066]

Enjoy that beer! You earned it man 👌

[@ThomasColeFZ]

Thank you very much for making this and sharing it with us.

[@kayle666]

i love that the trailer park boys are showing me how to fix my rig!

[@paulnunya3429]

Great video, thanks for taking the time to make it. Good job on getting the bearing out, those blind hole bearings are a bitch to get out when you don't have the puller. You did a good job and didn't phuck up the case.

[@BackCountryWrenching]

I wish i had a blind hole puller, the local tool shop in my area didn't have one so i have to be creative

[@1693caterpillar]

Jerry: If you want to remove the Needle bearing quickly from a blind hole, find a piece of shafting the same size as the inner part of the bearing. Fill the needle bearing with grease about half way. Make sure there is no air pockets in the grease. then lower the shafting down the inner part of the bearing and drive it with a hammer. This process hydralics the bearing out of the hole. Works good on pilot bearings for input shafts in the back of the crank too.

[@BackCountryWrenching]

i tried too with the shaft and a rubber mallet but it wasn't enough force, and I wasn't going to hammer on the shaft with a hammer so i said fuck it and grinded it out

[@erniemark19621]

Best thing I've found for cleaning parts is mineral spirits in a pump spray bottle. I use it to clean and degrease parts before painting. You can paint parts after it dries. Great for plastic parts cleaning.

[@essebug1066]

You make this look so easy. I might just give this a try. 😊 Thank you for such a good video.

[@bernieanddeewebb4648]

Thank you SO effing much for this clarification. We've been cussing at this dang part for two solid weekends. This really helped us. CHEERS!

[@fordwindsor351]

Nice seeing an in depth rebuild on a transfer case, the only experience I have with the inner s is replacing the chain alone on my old 85 F150. I would of liked to do the full rebuild but only had the chain available and being this was a plow truck, I was losing money while it was down so the quick fix was a must.

[@BackCountryWrenching]

there really isn't too much to them i was really expecting more

[@angryyankee9184]

Video's an ass saver. Makes putting an NP231 back together easier than the Hayne's Manual. 2 thumbs up.

[@constitutionalradiation3587]

To remove that bearing, find or make a wooden shaft (one could use steel but you're dealing with an aluminum case) that will fit the I.D. of the bearing. fill the bearing half to 3/4 the way with any light oil, insert the wooden shaft , place a heavy rag around the whole area (so you don't get sprayed with oil) and hit the wooden shaft one time with a hammer. Observe if the bearing has begun to come out. if so,... repeat. The process is called "hydralicing" , a slang term. It will be important to make sure that the outer case surface opposite the bottom of the bearing bore is lying flat on a hard surface and the case is well supported all the way around. (one will have to cover or temporarily plug the oil access hole on the side of the bearing bore also) When one sees this technique work for the first time, it's quite amazing.

[@joshestess]

It's alot easier and less messy to use bread in place of the oil. Just keep pushing more bread into the bearing and it will do the same and not spray you in the eyes. Do it for pilot bearings too

[@xxsilentxxxx]

This really helped me rebuilding my T-case. Thank you!

[@rjr1954]

What works good to to remove transfer case mounting bolt to trans is a distributor wrench , since the upper bolts and pass side bolts are a pain to get to .

[@rjr1954]

I do 4x4 transmission , differential and transfer case rebuilds at my shop . blind pullers don't work very well for pulling the lower out put shaft bearing , what works great is using 2 prong puller on a slide hammer with the puller legs ground down to fit under bearing , works great since when inserted and you screw slide hammer shaft into puller tightens good under bearing so don't slip out i lay the case with bearing facing down and one good slam comes rite out, would post a pick of puller modified but no place to post pic .

[@BackCountryWrenching]

+Rod Rowzee if you have Facebook or twitter post it on my accounts i'd like to see it

[@silentdeath9237]

A expandable hook slide hammer works for the needle bearing

[@bmwcoupe3332]

i was thinking that too. good call

[@garyconway7106]

No it doesn't... it will pull the bearing case apart

[@gradoisx2348]

@@garyconway7106 pilot bearing puller worked for me

[@jairecagomes5886]

thank you. you helped me a lot. hug to you from Brazil (Amazon).

[@MartinGarcia-xn8vo]

Thanks for your vids !!!!!!👍🏽

[@garybourgeois7019]

Thank you for publishing this! Trying to find a quality teardown and rebuild video or even manuals for TC's is like pulling teeth. I have to rebuild a BW 4409 out of a 99 Merc ML 320 and the dealer, of course, wants $3800.00. How close is the NP231 to a BW 4409? You will make every Older Mercedes owner sleep better at night. Again, a great video and keep it up. GBGB

[@robertramirez3994]

You earned that cold one buddy, thanks for the video.

[@YourOwnFailures]

Do you know where I can find that ball pin detent spring thingy at? At 9:44 mines missing in my Jeep. And it keeps on keeping into different gears

[@jeremyodonnell5551]

yes I have a blind hole puller no Bueno on that one , I cut the bearing retainer and got the bearings out but the outer race is fighting me and my collet now will not fit tightly on the bearing race.

[@caseybyington7197]

I work in some trans gel and use a blind hole puller and slide hammer. The trick is to work in the gel, then pop her out a bit and then actually whack it back in. Then pull your puller back in, get her started and then retighten the puller. That little bit of tapping back and forth will get the gel in there and voila! Just kidding, it's still a bitch. Lol

[@rfn944]

I think that hard to takeout roller bearing might be best removed with a sliding hammer. The bit that you would need is one that would grab the upper lip between rollers on opposite sides. May have to prefab your own if it is not readily available.

[@mikes589]

Incredible video dude

[@jasonthomas3015]

Love the video. Just were is the speedo gear on the new mainshaft from you're sye?

[@constitutionalradiation3587]

to get bearing out easily, find a shaft that will fit the I.D. of the bearing. wood, metal doesn't matter. fill the bearing bore with oil, place the shaft you obtained in the bore, wrap a rag around the whole works and hit the shaft with a hammer. you might have to do this a time or two, but it'll come out.

[@busharatkhan6242]

Excellent video - thanks for making it - well made

[@BackCountryWrenching]

thanks there really isn't too much to it

[@stillbloggin]

use a Dremel tool and lightly score the outer race enough to thin the metal down and starting from the top try to peel it away with a blunt chisel and Hammer. I tried the blind puller but I didn't put heat back behind it

[@roberthayes5037]

Very informative video. Thanks

[@CaptainSpaulding]

your videos kick ass. thank you.

[@fabiogogold]

Could I replace the electric speed sensor with the mechanical speed sensor from my 242 also I have a question about the aw4. I have a newer one and the connector are different so I took all the sensors off the old aw4 from 91 and went to put them on the 98 aw4 and there’s a sensor by the bell housing on the drivers side can I leave that unplugged?? Since it’s not in the old wiring harness or should I wire it in

[@ryzeds5016]

So when I install my shifter in the transfer case ,does it mattter if I put it in neutral like you did or no? And when I put that shifter in the transfer case and I put that little ball pin back in my shifter does seem to wanna move at all

[@db2171]

So the other day my 2003 jeep TJ with manual transmission while my son was taking off at red light felt like no power, said it felt like a flat tire or severe binding, He had towed home. I jacked up front end and tires rotated fine, but i noticed the drive shaft was not spinning. I grad the drive shaft and tried to spin it while the front tires were still lifted in the air. I couldn't move it. i got in the jeep and although it was in 2 wheel H i tried to shift transfer case to Neutral I couldn't move the shift lever. eventually moving the jeep while pulling on the lever it finally popped and now seems to shift in and out of 4 wheel drive ok. what would cause the transfer case to jam the front drive shaft if it was in 2 wheel drive and not being shifted at the time? my only thought is if the drive chain jammed. any insight would help . Thanks

[@alyahyamo]

a drunk mechanic, what could be worse. love your fucking videos.

[@gennykennedy9118]

how much slack in the transfer evade chain is there supposed to be

[@fabiogogold]

Also that was very legit explaining of this rebuild thanks for the info

[@davidalbers9568]

Great video. in regards to that little bearing that you said was a pain to get out. Is it possible to pry out a few needle bearings and then use a seal puller?

[@MattRT91]

How much play is acceptable in the planetary gear pinions. Mine move up and down about a 1/8 to 1/4 inch.

[@ZaiahMaxx]

Take a torch and heat the area around the bearing and give it a little reverse thrust pops right out

[@FW2N117]

So just to change the chain on the case how hard is it. Need it done . Any help is welcome

[@jonwatts5459]

i have popped the case into a domestic oven to heat it up and make it expand...worked well. clean the case well first so as not to make oven stink of oil.

[@eddy748]

Impressive dude. Good job.

[@davidmotherway7412]

so my transfer case in two wheel drive acts like its in neutral in 4 high it works properly but in 4 low only the rear yoke turns. Someone put a slip yoke eliminator in it i haven't cracked it okay yet to see whats going on. and thoughts?

[@onegoodmason]

Awesome job . Love the commentary . My bearings are noisier than I would like . I'm gonna do the complete rebuild just because . This will be a great reference . That front output shaft bearing is a bitch . I tried that cheap puller crap from PA , it either broke or I tossed it for it's uselessness , I don't recall . Nothing else available , I ended up doing much the same as you , cut the bastard out and struggled . At the time , I didn't have the tools , now I do so it should be a little easier . Thanks for your video :D

[@BackCountryWrenching]

a blind hole puller would have worked wonders but when you need one you just can't find one, You must be Canadian too since you said your crap puller from PA lol

[@onegoodmason]

yup . ab

[@kitesurfin3050]

Here's the puller that works wonders on that type of bearing...well my apologies as it will not allow me to paste a link but go to www.amazon.com and search for the Cal-Van Tools 31 Pilot Bearing Puller. Good video as it provided the information that I needed.

[@raquelquintero5220]

+Sup man got a ? On the same .so my o/d pots on out no where any help

[@bmwcoupe3332]

great video as usual. thank you!

[@freakinowned]

What tool kit are you using to punch bearings out? Where can I buy one

[@Lenoxgold]

Great video. My transfer case shifter lever is completely seized on my 1999 ram 2500. Truck sat for a couple years. Any way to lube that without pulling the case out. I know its not the linkage.

[@BradM766]

I have a 92 Jeep Cherokee with a NP231J transfer case in it. When I put it into 4Hi it seems to engage and drive fine however, when I put it in 4Low and put the jeep under a load like attempting to climb a hill, the jeep hesitates and struggles to move almost like the transfer case doesn't want to stay fully engaged. What would be your guess? Stretched chain maybe?

[@OmardeVanssay]

Hi! Anything on a 1998 L200 stransfer case chain replacement? Mine got loose when 4L/H engaged. Is very different from the one in the video? Do I have to take away all the case, or can I replace the chain without unloading the case from the truck? Thank You!!

[@joephus420]

Not sure if you are still checking comments here, do you know if you can flat tow with the NP231?

[@josealfredomorales1848]

Everytime I put on my 4x4 I hear this loud grinding noise and sometimes my xj bucks and when I try to disengage the 4x4 I have to put it in reverse is it the transfer case?

[@BackCountryWrenching]

Jose Alfredo Morales that would only depend if the source of the noise was indeed coming from the transfer case

[@josealfredomorales1848]

How would I know If my transfer case is bad or going bad

[@BackCountryWrenching]

if your transfer case is indeed making the sound it's a pretty good sign that something is worn out most likely the shift forks and or worn chain

[@josealfredomorales1848]

Thanks a lot for your feed back also would that make my xj buck

[@BackCountryWrenching]

if it's not going properly into 4x4 or into 2wd it's a possibility

[@abrady3000]

hey bud where did you get your punch out tool at like that you can use different sizes on the same shaft

[@maketrucksgreatagain]

i have a 1998 model 231d transfer case. i need to know if i can buy a 231j rebuild kit and it work the same? any help is much appreciate it.

[@mattkubiak3460]

when reassembling to the transmision what gear does it neeed to be in

[@MrDpaquette]

Love it. Hey - WHat size punches/presses are used and where is good place to get a set? Thanks to your video I now see there are a lot more seals, o rings, etc than meets the eye. Going to buy a master rebuild kit and shift fork just in case. Appreciate your response if you have time. Thanks man!

[@Kyle-yz4lq]

i take it that the 231D out of a Dakota would be similar in the rebuild?

[@JustALad]

Kyle should be, the sun gear may be different

[@frankyhernandez476]

Hey I was just changing out the chain on my 231. I left it in inside my jeep while I was doing it, after finishing up, sealing the outsides I realized that I threw off the gear drive. In better words, if my shifter is 4WDLO, it says I'm in neutral, if I'm in Neutral it says I'm in 4WDPT. I'm trying to understand how I can adjust this back to the way it's supposed to be. Can you help me?

[@Sakkie_S55_M3]

Please guys!!!!I need help!!!!, I susspect its the transfer case I have a 2009 Liberty 2.8 CRD, driving the car it will give 1 jerk and about 10 seconds later it goes into LIMP Mode, could that 1 jerk mean it slip's teeth in the transfer case and this only happens under light throttle, under full throttle it works like it should.

[@BackCountryWrenching]

+Izak Botes nope i'm suspecting it's something else. to need to hook up a scanner to the vehicle to see what caused it to just into limp mode.

[@Sakkie_S55_M3]

+Bullshitkorner thanks for the reply I did a scan on my Android torque app and the fault codes is as follows :P2767 - Input/turbine speed sensor B circuit No signal :P0087 - Powertrain :P009A - Powertrain

[@BackCountryWrenching]

sounds like your taking your vehicle to the dealership

[@jrr6798]

Hello- Looking for your opinion regarding a leaky rear yoke on my NP 231 TC. The rear shaft seal is bone dry, but the seal just behind the yoke appears to have been compromised. I don't believe there is one of those star-shaped washers like the front yoke(?) I'm thinking of simply using RTV, but not sure how well it will hold. Suggestions?

[@DBNEBMUSICGROUP]

Awesome video! Thank you!!

[@hinglemckringleberry7580]

Did you put your old bearing back on the top of that planetary gear? Looks like it got a lot thinner between shots....

[@pabloamparo]

Hi, if you need to change the anulus gear, where can you get one? Thanks!

[@afaketwo]

You make it look so easy . awesome to learn from ! Thanks was it making a grinding noise before the rebuild .?

[@leroygreen1877]

Wow dude that case looks stupid simple! This one looks simple but why does a NP203 such a monster to repair?

[@jerrysmith6181]

Dude your awesome!

[@hatemongol]

hat was very helpfull Sr. I'd like some advice. I haven't used 4wd in my xj jeep. I changed the linkage and bushings, but the 4wd stucks in neutral everytime I shift to 4Low. I've been told to buy a new transfer case, but I can't affor it... Is there any specific part I need to change or you have any ideas? Thanks. 

[@Legi_perperni]

what is that silver tool you are using to hammer things out with called

[@kyfw6351]

terry johnson that's a bearing/race driver set.

[@rodrigo1280]

How to remove the transfer case of toyota 4runner 99 LTD ??

[@georgecamarillo9520]

Fucking A man!!!! This is the kinda video a guy like can learn from. Great stuff.

[@toddgardner1086]

hi, love the video was a big help to me and my rebuild. quick question: The chrysler service manual says to install the "sliding hub retaining ring" after its connected to the range fork and dropped in place in the case...but that wasnt in your video. I think I skipped that ring. Do i have to pull the transfer case and re-do it??

[@socalRooster]

You have video showing manual transmission rebuild? I was looking did not see one...thanks nice video

[@BackCountryWrenching]

no my transmission is a automatic in my jeep

[@Rodneyz2012]

why dose the chain gets loose and starts grinding?

[@BackCountryWrenching]

all chains will stretch over time, there is nothing that can be done to stop that

[@jeremyodonnell5551]

what did you end up using to cut the inner race of that needle bearing , I am in the same situation with my t case

[@BackCountryWrenching]

+jeremy odonnell if you can get your hands on a blind hole puller that is the way to go

[@billgates9306]

Nice video man I have the same transfer case in my truck. it's a manual case the 4L works but the stuck won't move into 4H do you know what the problem might be I already replaced the actuator.

[@Lonewlf7676]

GF recently bought a 99 Cherokee that I am still going through. The transfer case did not shift at all when I first tried it. Now the shifter moves, but there is a grinding noise when changing the ranges. This happens even when the AW4 transmission is in park or N. Thoughts on this?

[@Lonewlf7676]

Lonewlf7676 I haven't checked or changed the fluid yet BTW. Will get to that shortly. Just thought I'd ask first about the grinding in case this is a known problem.

[@BackCountryWrenching]

Lonewlf7676 they will all grind to a certain extend as the gears are beveled to slid in and out.

[@Lonewlf7676]

2H and 4H seem to work fine now. Beyond that still grind.

[@aronkovacs1386]

+Lonewlf7676 try adjusting the tcase linkage. also blown transm. mounts can cause the same thing.

[@elmeracoby5585]

great video very helpful.

[@ralcala7732]

Awesome vid

[@socalRooster]

OK thanks for fast reply...

[@Boomer21b]

whats that tool you're using to tap the bearings in with? never seen one of those before.

[@johnammerata551]

to get the bearing out its very easy I have a welding company for over 31 welding over 43 don't over heat but heat housing around bearing an it will fall out

[@jayrainey6653]

Where can I get the rebuild kit

[@SillyPutty3700]

Did your rebuild kit come with the mode shaft spring?

[@Bigjamez2011]

Yo now this is the instructor the world needs ! Fucking beer time ! Lol accurate but blunt love it

[@milkmanpeter]

Who did you get rebuild kit from?

[@TG-LGreen]

Man I love the attitude u present and love the channel.....but I'm sry as a maintenance tech myself, holy shit ..that's a shit ton of silicone. Feel bad for the sry bastard that tries to separate that case.....and being that u live in the same universe as I......more than likely it will be u ....seems like ever time I do something with the words "let the next bastard deal with it" that bastard is always me. Keep posting this shit. Love it....got a question , did u have leaking issue with that case, is that the reason for all the rtv?

[@BackCountryWrenching]

The RTV usage didn’t pose any issues as I had it apart the last couple weekends to rob parts from it and it was fine. Even the oil screen was fine for the pump.

[@ramairgto72]

Anyone know if the NP231 NP 242 ect. share the same rear case half as a AMG 242? You got a sub right at the fucking beer part!

[@xmoonshineninja]

Did you buy a kit for the rebuild or did you buy all the part separate?

[@BackCountryWrenching]

there is a kit you can buy

[@maxmeyer1617]

Bullshitkorner where do you buy these kits from?

[@BackCountryWrenching]

link is in the description

[@netpointjuazeiro]

Parabéns pelo vídeo, queria um profissional aqui na cidade para fazer um serviço assim.

[@technocavemansandiego9627]

What time it is again!

[@lanpartypro]

Thank you for making this video Jerry. I am working on an SYE kit now and the rebuild kit. This is has helped A LOT! I ordered the same rebuild kit but they sent the wrong main input bearing.... shitshow

[@joselollopez59]

THANKS SO MUCH FOR IS VIDEO

[@MohammedAslamtit-bitsoflife]

Bullsbitkorner fuck in its fantastic demonstration out of all the videos I had watched today. Thank you very much fg.

[@jimwhalen6769]

Dude! Awesome video! Thanks for saving my ass!

[@anitawaxin4597]

What rebuild kit did you buy?