T case rebuild

[Rubi03 jef]

ok so last time i was out my jeep made a few noises i havent heard before thanks to some input from others its most likely my tcase chain

now whats all invalved in rebuilding a tcase  (chain ... and anything else )  ive never opened one but speaking to some people its really not a hard job at all
so when i have it open i should probably check for worn out parts gears stuff like that . but its there anything else i need to check

and where do i buy a tcase chain   

[SwampSinger]

you get all that stuff from the Gear center... don't forget your CJA membership card...

[Rubi03 jef]

right on .. ill be checking that out tomorrow .  thanks

[SwampSinger]

don't cheap out on the chain ( should be about $100 for a good one)... and ask for a kit to do an over all on your t-case... they'll give you poly bushing for your forks, alll seals and bearing needed... get also a seal for your output shaft on your tranny... might as well change that if it's out.

the kit and the chain should be about $250 +/-

It might be different for a rubi,...

the sound that thing made a few week ago seemed like your chain was skipping Jeff... i'm no expert but that what it sounded like.

I'm going there soon to do get what I need to rebuild a np231... may be tomorrow afterwork. if you want, we can meet there... i'll PM you my cell #

[Rubi03 jef]

thanks dom

ya ill be good to go tomorrow

[jpthing]

ok so last time i was out my jeep made a few noises i havent heard before thanks to some input from others its most likely my tcase chain

now whats all invalved in rebuilding a tcase  (chain ... and anything else )  ive never opened one but speaking to some people its really not a hard job at all
so when i have it open i should probably check for worn out parts gears stuff like that . but its there anything else i need to check

and where do i buy a tcase chain   

The hardest part is getting it out...I've heard some crazy talk about doing an SYE or replacing the chain with the tcase in place but I think it's actually easier just to pull it...If yours is anthing like my TJ you better have a good selection of ratcheting flex head wrenches, ratcheting stubby wrences etc. in a 14mm or 9/16" size as getting the nuts off near the tcase shift linkage can be a real pain in the...well in the nuts I guess...and the knuckles...Once its out it's a simple matter of opening it up, doing your stuff and putting it back together...making sure it doesn't leak is important(thorough careful apllication of RTV) and getting the oil pump and pickup in just right can be a bit tricky but  overall the tcase is pretty easy to work on...

Unless your case is really beat it's unlikely anything will be worn (other than the chain) except for maybe seals and the fork  as was mentioned.

You must be pretty hard on your '03 to wear out the chain so bad so fast...my '97 and '95 are both on original tcase chains and have been used pretty hard...do you use 4wd on the street in winter or rain or something? Oh yeah as I recall you are the one who busted an axleshaft on the open run I went on so likely just hardcore wheeling eh?

Good luck!!

Perhaps you could describe what happened when it slipped for the sake of educating the masses on how this was diagnosed as a probable problem? Horrible noises I'm guessing?

Good Luck!!

Also as I recall you will need a yoke nut or two.

[JackstandJohnny]

You must be pretty hard on your '03 to wear out the chain so bad so fast...my '97 and '95 are both on original tcase chains and have been used pretty hard...
Good luck!!

i don't think jeffs ever put it in 4wd........ its a total pavement princess...............

[Rubi03 jef]

it gets used .. i bought it 2 years ago and i bet the previous owner used 4x4 on the road

i never do      it is my first 4x4 so im sure im harder on it then i should be but hey it happens

as for noise from it    only under hard stress in 4low it makes a weird noise and shakes the tcase . at first it sounds like a ujoint but with my wheels straight and the new shafts and ujoints it not posible to be that

so hey i figure with 130k on it i mine as well open her up and see what im looking at being the NP241 i dont want to do more damage to it and make it worthless

i dont need a SYE because its a fixed output shaft already

and pulling it off the back of the trans will be easy . ive done it like 4 times already for cluthes and tranny swaps


maybe ill try to take some pics and post of damaged and replaced parts
 

[morerpmfred]

An easy way to check if your chain is jumping is hook up your tow strap to an object that can not move and drive it in low range first gear keep the tires turning when the strap comes tight and try to dig a couple of holes. You will here bang bang bang about a second or less apart and you will feel it the jeep jump with each bang. If it is jumping you will need to change the sprockets as well as they will be toast to.  Water or mud in there greatly accelerates the wear on all the parts . Worn out lockers will do the same sound but a lot quieter and hardly no jumping when banging.

[Rubi03 jef]

thanks

[FiEND]

An easy way to check if your chain is jumping is hook up your tow strap to an object that can not move and drive it in low range first gear keep the tires turning when the strap comes tight and try to dig a couple of holes. You will here bang bang bang about a second or less apart and you will feel it the jeep jump with each bang. If it is jumping you will need to change the sprockets as well as they will be toast to.  Water or mud in there greatly accelerates the wear on all the parts . Worn out lockers will do the same sound but a lot quieter and hardly no jumping when banging.

sounds like what my jeep is doing just starting out in first gear/reverse.

... and getting the oil pump and pickup in just right can be a bit tricky but  overall the tcase is pretty easy to work on...

is there a pump/pickup in the transfer case?

ugh, i should go visit Dom and see what I am in line for

[Rubi03 jef]

thats what i figured i would do . .is give him a hand on his and learn how to do mine

[CatSplat]

is there a pump/pickup in the transfer case?

Yes, it's at the rear bottom edge of the case. It can be tricky to seat correctly but a thin screwdriver generally does the trick.

TC's are not tough to rebuild, a pair of good lock ring pliers (not snap ring pliers, but I think you may need a pair of those as well) will be your best friend. You can get a pair for ~$12 at Princess Auto.

[Bnine]

I am doing a full rebuild and case half replacement on a rubicon 241 case this week Jeff.

Pop down if you want to observe and figure a few things out.

[Rubi03 jef]

thanks bill ill see you  there