I have a 1989 Jeep Comanche, 4.0L, 5 speed, 4x4, 231 trans case (part time) with 250***Kms

Ok, I'm on a down slope hill glazed in ice.

Going whatever speed in 2hi then throw the trans in Neutral and hammer the breaks results in a sliding STOP.

In both 4hi & 4lo when I do the same as above I hear a clicking/gear rubbing sound coming from the transfer case.

I tried to adjust the transfer case shift linkage and on a test drive I could not shift it in 4hi with out stopping. Troubleshooting (truck not moving), I put the transfer case in NEUTRAL and when shifting it back to 4hi I would hear that same gear rubbing sound AS it shifted. However if I pressed in the clutch when shifting to 4hi (from neutral) it would go in with out any sound.

One of you must know what would cause that gear rubbing sound in the transfer case and it has something to do with how it is possible to shift on the fly with out stripping the linkage gears that connect the rear to the front. Is there a clutch pack in there?

Please help :)

For those of you that replied, thanks for the help,

Here is the FIX:
http://comancheclub.com/forums/viewtopic.php?f=2&t=13541&sid=8d7957f3014017da7afb124c99421b7d

I read what you posted and it sounds like your front axle disconnect broke? An old trick we used to do when they would quit working was to take the cover off and just flip it upside down.The fork would be on the other side and you would move the collar to lock the axles permanently.No more disconnect.