Sticking in 4WD

[iamweasel]

Hey guys,
After I've changed back to 2WD from 4-part time, my wheels still hop when turning on pavement. Is there a trick to getting the transfer case to properly disengage?
(sorry if that's a real noob question!)

 

[Bulli]

Nope. Foot on the brake, transmission in nutral and then move the transfer lever to 2H. The part time indicator light will go off on the cluster. If the transfer lever do not want to engage, lift your foot of the brake and let the car move forward or backwards while pushing on the transfer lever. You will feel the transfer case engage.
But from 4H to 2H you can shift on the fly.

 

[Tony]

same thing happend to me last night but i think i broke my cv joint! i was only going about 2 mph and tried to turn onto the pavement while in part time and the jeep felt like it was trying to stop then the next thing you know...clink, clink, clink, clink?? do you guys think i broke my cv joint? i dint think it could break that easaly

 

[LibertyTC]

Engaging part time/ should only be done on slippery surfaces/muddy or snow covered roads.
Turning on dry pavement is a very bad idea while in any 4x4 mode with Command Trac.

 

[J-Thompson]

I do not care what any one says
to properly go in and out of 4wd the Jeep must be rolling
I have never had an issue doing it this way:
Jeep rolling at 5 mph ,+/-, slip the trans to N
shift to desired 4wd mode
then back to drive
I will have issues if I let the Jeep stop while the T-case is in N
and mine is as loose as a Vagas ,never mind
It gets used a lot

oh and to the turning on dry pavement
it is not as bad as you make it sound
I have been to Kentempsy ,probably spelled wrong
there it is like driving on concrete
very very uneven concrete but still getting great traction
and have turned full lock in 4wd low ,guys do it all day long and nothing breaks
from turning any way

 

[Tony]

oh and to the turning on dry pavement
it is not as bad as you make it sound
I have been to Kentempsy ,probably spelled wrong
there it is like driving on concrete
very very uneven concrete but still getting great traction
and have turned full lock in 4wd low ,guys do it all day long and nothing breaks
from turning any way

thats waht i thought, but it just snapped my cv joint like a twig and i was barely making a quarter turn, i dont under stand? and it doesnt click in 2h only in 4x4

 

[iamweasel]

Ah - I might have stayed in drive while I changed from 4wd to 2wd. I did change before driving onto tar.

In the manual is says you can shift on the fly up to 50ish mph.

I'll try going into neutral next time, see if that makes a difference.

Thanks guys

 

[J-Thompson]

Ah - I might have stayed in drive while I changed from 4wd to 2wd. I did change before driving onto tar.

In the manual is says you can shift on the fly up to 50ish mph.

I'll try going into neutral next time, see if that makes a difference.

Thanks guys

Yes you can and we have in the KJ
but always to N on the trans first
besides why would you need to be going 50 before you know you need
4wd? I always know before I start the Jeep if I will need 4wd or not

 

[iamweasel]

besides why would you need to be going 50 before you know you need
4wd? I always know before I start the Jeep if I will need 4wd or not

For sure. I guess only if the surface suddenly changed and you wanted the extra traction without having to pull over

 

[iamweasel]

Hey guys,
Yesterday I was about to reverse up a steep part of my driveway, round a corner.
I often get some wheel-spin doing this, so I put transmission into Neutral, transfer case into FULL-time 4WD.
Reversed round the corner (full left lock). All good...
Transmission into N;
Transfer case into 2WD;
Turned to full right lock, into Drive, then heavy resistance (like it was in part-time 4WD) and a bang/hard-knock from the front left. a bang??

Took a lot of shimmying to get out of the drive without going full lock again, but got onto the road and it took a few careful KMs before it felt like it was in 2WD again.

I'm thinking of taking it to the dealership to get the transfer case checked, because that doesn't seem right to me.

Any thoughts?

 

[J-Thompson]

Were you rolling when you shifted the t-case?

 

[iamweasel]

Nope. stationary both times

 

[J-Thompson]

Nope. stationary both times

Yeah
Like I said need to be rolling to avoid bind
I have had my T-case get stuck in N before
Get it rolling and she will go where you want

Maybe you should try to shift it while rolling and see if you
still have issues before posting the same problem while doing
the same thing
that is like ******** about a rocking chair that will not stop rocking
but you don't want to sit still
Got to change some thing if you want a different result

 

[LibertyTC]

I wonder if infrequent use or transfer case fluid changes comes into play re the binding.
I normally will only shift while in N & moving forward.
Last time I experienced this, what I describe as late coming out of part time, was moving forward, but took a bit of turns for it to release. It had just sat for two months.
If anyone actually knows what is responsible for these issues..please speak up...

 

[TwoBobsKJ]

I wonder if infrequent use or transfer case fluid changes comes into play re the binding.
I normally will only shift while in N & moving forward.
Last time I experienced this, what I describe as late coming out of part time, was moving forward, but took a bit of turns for it to release. It had just sat for two months.
If anyone actually knows what is responsible for these issues..please speak up...

Tim, I think you've nailed it. When I first got my Libby I'm sure it had been a while since the transfer case had been shifted out of 2H and it would be "late" coming out of Part Time and Full Time 4H.

I changed the fluid and have gotten into the habit of shifting into Full Time 4WD occasionally and I think that helps the transfer case ease into 2H. But your question still stands:

Why does the transfer case "stick" in 4WD? :shrug:

Bob

 

[LibertyTC]

I am also thinking that the friction modifiers in the ATF+4 are breaking down quickly in the transfer case.
Maybe something is missing about the fluid in there.
I am going to try to add about 4 oz of LubeGard Red and see if that frees up the lateness.
http://www.lubegard.com/C-112/LUBEGARD+Automatic+Transmission+Fluid+Protectant

 

[iamweasel]

Thanks for the responses guys. I might try adding something like that LubeGard.

Got to change some thing if you want a different result

Well I did - I tried in N this time, as you suggested. I will try it in motion next time.

Any suggestions about what that hard knock could've been? CV?

Question is: Why would it have gone into full time ok, but then when going back through PT to 2WD it seemed to shift from FT to PT, but not all the way to 2WD?
Or - more importantly - is that normal?

 

[J-Thompson]

the t-case needs to "mesh" the front and rear diff's
if the out put shafts are not lined up it will not go into or out of 4wd
if you are rolling the the shafts are turning thus they will line up
when you are sitting still and they are not lined up it will not shift
it can be forced but you will hear a bang when it lines up

put it like this
due to people not properly shifting into and out of 4wd the "new" style t-cases were invented ,and my '98 Ranger had a "new" style t-case
basically they use an electric motor to shift for you
this way when you do it wrong the vehicle knows and corrects for you
I could turn the knob in the ranger sitting still foot on clutch and 4wd would just blink
start to roll and press the clutch and presto 4wd

try doing what I told you to do and report back

 

[tjkj2002]

If you have the select trac t-case your air pressure in the tires must be all the same and the front and rear drive shafts real close to the same speed(no turning) for the t-case to shift from fulltime to 2wd.It's normal for sticking with this t-case.The select trac also is a in-direct shift t-case which uses checkballs and springs to actually shift,bad design.Shifting through the selections once a month(and driving in them) will keep it working good.

 

[rockymountain]

I have the command trac (partime only) Transfer case and keep my tires the same pressure like OCD. I shift in and out of partime without any problems but I always have problems when I'm not rolling. You must be rolling to get it in and out. the proper way to do it is in the manual. and it is different for 4-lo where you have to be rolling at about 1-5 mph and have the transmission in neutral.