minor binding in 4 wheel full time

Kingmick217 · **Joined:** Thu Dec 16, 2010 7:35 pm **Posts:** 27

Manufacturer
NP = New Process Gear
NV = New Venture Gear

Number of Speeds/Gears
1 = One speed (high range)
2 = Two speed (high and low range)

Strength
1 (low) to 7 (high)

Type
1 = Part-time 4WD
2 = Full-time 4WD
3 = Electronic shift
4 = Not currently used
5 = Torsen-type differential
6 = Computer controlled multi-plate wet clutch
7 = GeroDisc
8 = Not currently used
9 = Viscous coupling

Kingmick217 · **Joined:** Thu Dec 16, 2010 7:35 pm **Posts:** 27

So the NV231 has no differential between the front and rear outputs :juggle:

.
I thought that baby was open in 4-hi and locked in 4-lo :banghead:

.
I had to look it up to verify what you guys were saying. :google:

Holy crap! :oops:

arengant · **Posted:** Fri Jan 07, 2011 3:20 pm

ATXKJ wrote:

FYI - Jeep's Nomenclature is an instruction on how to drive - it is not a description of what the transfer case does. i.e.

Full time - means you can drive it full time - you can put it in 4W Full time in November and take it out in March - and drive on Dry roads or Snow or mud in between
if you have Full time (in a Liberty) you have a Select trac NV242 transfer case so there's a differential between the front and the rear. (all US CRD's have the NV242)

now Part time - means you can only drive it in 4wd part of the time -and that part must be on slippy roads - (wet only if you have really bad tires) snow, dirt, mud - because the front and rear are geared together. and it can be 4hi or 4 low. If your transfer case only says Part time you have either a NV231 or 241 - and do not drive it on dry roads - it'll break.

Thanks for that, I understand now

TAHOE · **Posted:** Fri Jan 07, 2011 3:58 pm

ATXKJ wrote:

FYI - Jeep's Nomenclature is an instruction on how to drive - it is not a description of what the transfer case does. i.e.

Full time - means you can drive it full time - you can put it in 4W Full time in November and take it out in March - and drive on Dry roads or Snow or mud in between
if you have Full time (in a Liberty) you have a Select trac NV242 transfer case so there's a differential between the front and the rear. (all US CRD's have the NV242)

now Part time - means you can only drive it in 4wd part of the time -and that part must be on slippy roads - (wet only if you have really bad tires) snow, dirt, mud - because the front and rear are geared together. and it can be 4hi or 4 low. If your transfer case only says Part time you have either a NV231 or 241 - and do not drive it on dry roads - it'll break.

Well, that's a bunch of balony....I guess I'm too old school. The 4x4's I grew up with "fulltime" meant 4x4 locked in all the time, i.e. older Chevy fullszie and some late 70's jeeps if i remember. I understand it now, guess I better tell the wife not to use Part time any longer.

67Customs · **Posted:** Fri Jan 07, 2011 5:18 pm

The only reason why you would get binding in 4full-time is if the transfer hasn't actually engaged 4 full-time and is still stuck in 4 part-time.

rockwerks · **Posted:** Fri Jan 07, 2011 5:51 pm

67Customs wrote:

The only reason why you would get binding in 4full-time is if the transfer hasn't actually engaged 4 full-time and is still stuck in 4 part-time.

Not true, you will get some Bumping type binding while steering tight at low speeds on dry pavement no matter what it is the nature of the 242. Ive had 5 in different jeeps over the years

67Customs · **Posted:** Fri Jan 07, 2011 8:37 pm

rockwerks wrote:

67Customs wrote:

The only reason why you would get binding in 4full-time is if the transfer hasn't actually engaged 4 full-time and is still stuck in 4 part-time.

Not true, you will get some Bumping type binding while steering tight at low speeds on dry pavement no matter what it is the nature of the 242. Ive had 5 in different jeeps over the years

I've turned mine as deep as possible on dry pavement in 4 full-time and got no binding. Zero.

TAHOE · **Posted:** Fri Jan 07, 2011 11:38 pm

Well, actually got in wife's Libby tonight.... it has 2wd, 4Hi, N, 4Lo, but when you put it 4HI it pops up "part time" light on the dash...so she can only use it when the roads are covered in snow and has to constantly put in/out of 4hi so it doesn't bind??? ..... Another reason I'm glad she drives the piece of crap.

ATXKJ · **Posted:** Sat Jan 08, 2011 1:12 pm

there are a lot of folks with 231/241 transfer cases, all manual transmission, all wranglers.
the 242 was an option on Libertys and the 231/241's are physically stronger - in order to get space for the differential gear cluster - they shaved one of the gears ~ 1/2 thickness. So it's not bad - it just different and you need to know how to drive it.

for your wife - make sure she has good tires and the only time she'll need a 4wd - the 'part time' 4wd will be fine, just make sure she knows not to leave it in 4wd when the roads clear.

arengant · **Posted:** Sat Jan 08, 2011 2:53 pm

I agree, NO binding in full time, because like previously stated, Full Time means you CAN drive it in that mode "full time" it's not like "fully engaged 4wd" just like "Part Time" means the 4wd is only engaged occasionally.

I like the 242 transfer case even better now that I know how to drive it, way better than the quadra drive stuff in the grand cherokees

zammer · **Joined:** Thu Feb 25, 2010 12:47 pm **Posts:** 43

TAHOE wrote:

Well, actually got in wife's Libby tonight.... it has 2wd, 4Hi, N, 4Lo, but when you put it 4HI it pops up "part time" light on the dash...so she can only use it when the roads are covered in snow and has to constantly put in/out of 4hi so it doesn't bind??? ..... Another reason I'm glad she drives the piece of crap.

You want her driving a piece of crap Marty? LOL...

TAHOE · **Posted:** Sun Jan 09, 2011 3:58 pm

zammer wrote:

TAHOE wrote:

Well, actually got in wife's Libby tonight.... it has 2wd, 4Hi, N, 4Lo, but when you put it 4HI it pops up "part time" light on the dash...so she can only use it when the roads are covered in snow and has to constantly put in/out of 4hi so it doesn't bind??? ..... Another reason I'm glad she drives the piece of crap.

You want her driving a piece of crap Marty? LOL...

She chose it not me.... :mrgreen:

tommudd · **Posted:** Sun Jan 09, 2011 4:08 pm

But with good tires then she shouldn't have to run it locked in that much unless its real bad out. I hardly ever run mine in 4 wheel drive unless there is quite a bit of snow on the roadways

JeepinJarhead03 · **Posted:** Sun Jan 09, 2011 4:35 pm

you're supposta enjoy the drift

Kingmick217 · **Joined:** Thu Dec 16, 2010 7:35 pm **Posts:** 27

JeepinJarhead03 wrote:

you're supposta enjoy the drift

four-wheel frift through the snow while passing a mini-van :BANANA:

Hey atleast I know I'm lying when I say I'm a good driver. :goink:

rob40wilson03 · **Joined:** Sun Jul 10, 2011 9:43 pm **Posts:** 51

ATXKJ wrote:

you can run Full time - all the time - dry roads or not.

no noticeable binding

(I get as much from the front truetrac even if it's in 2 wheel drive)

however if it doesn't fully release when you switch full to 2wd - you'll get binding - because it's semi stuck in part time - stop - back up and see if it clears

can't see the fluid having much impact - but do check for metal particles/shaving in the oil
clearances can cause issues.

Thread revival time...

So after NC's snow and ice over the weekend, I was driving around in 4 Full Time but now that I've gone back to 2WD, I think it's stuck in 2 Part Time. I got pretty bad binding today. I tried backing up, putting it in 4 Full Time as well as Part Time (in a straight ling) and then back to 2WD. Didn't work.... suggestions?

TIA

HoosierJeeper · **Joined:** Sun Feb 15, 2009 8:23 am **Posts:** 1218

Try it with the transmission in neutral...sometimes that helps. I'd even shift into 4LO (while in N, stopped or slightly rolling) and then back to 2wd. It's trial and error. If you get under it there's the part the lever slides on that you could try lubing up. Right above the driver's side catalytic converter IIRC.

TwoBobsKJ · **Joined:** Fri May 11, 2012 8:03 pm **Posts:** 463

rob40wilson03 wrote:

ATXKJ wrote:

you can run Full time - all the time - dry roads or not.

no noticeable binding

(I get as much from the front truetrac even if it's in 2 wheel drive)

however if it doesn't fully release when you switch full to 2wd - you'll get binding - because it's semi stuck in part time - stop - back up and see if it clears

can't see the fluid having much impact - but do check for metal particles/shaving in the oil
clearances can cause issues.

Thread revival time...

So after NC's snow and ice over the weekend, I was driving around in 4 Full Time but now that I've gone back to 2WD, I think it's stuck in 2 Part Time. I got pretty bad binding today. I tried backing up, putting it in 4 Full Time as well as Part Time (in a straight ling) and then back to 2WD. Didn't work.... suggestions?

TIA

Could be the tires are not the same size. The Full Time transfer case is very picky and needs all four tires to be almost exactly the same size - I'd check those for sure.

Also, when shifting into and out of Full Time let off the throttle slightly when you move the handle then go back to your normal speed. Seems to help the transfer case clutches shift properly.

Bob

minor binding in 4 wheel full time

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