Crazythingsido2

i was wheeling in the snow today. i was going up a hill in 4wd and then it sounded like my fan was rubbing on my radiator or something, it obviously wasn't. at that time i lost 4 low and high. the front drive shaft turns in 4wd. if i grab and twist it you can see the rear drive shaft turn. im not sure whats wrong here i pulled the front diff cover and there's nothing in the oil (no metal). i have a front vacuum disco axle so i pulled the little cover for that and the shafts looked fine.
what else should i check?
thanks

MasterShakeXJ

check the ujoints maybe. mine started making noise in the snow yesterday but im just assuming it's b/c of it being caked in snow.

Crazythingsido2

the u joints are good. they have no play. but the front wheels still dont turn but the drve shaft does

Gunnar89

check the vacuum disconnect. 4 bolts and can take it off and once its off, theres a lil ring that conects the axles try puting it in place by hand and move the vacuum retaining ring to the engaged position and unplug the vacuum line and plug the hole with a vacuum plug (or a vacuum tube with a nut in it to hold it in place) and try that and see if the 4x4 works

Crazythingsido2

i checked that like i said. my vac disco is permanently in the locked position

Gunnar89

welll if the tires turn with the drive shaft but no power going to the drive shaft, maybe u broke the chain in your t case? that runs the front drive shaft?

Crazythingsido2

well i got the front tires off the ground today. i put it in 4wd and tried to turn the front drive shaft and i couldn't. and when i spin one wheel forwards the other goes backwards so im assuming my axles are good. im stumped. i don't know whats going on here im gonna play with the linkages tomorrow and see what happens.

Gunnar89

ya it has to be with the t case when u drive it does it make a noise in the t case?

Crazythingsido2

no noises. it drives fine it 2wd. is it bad to drive it like this

Gunnar89

i dunno im stumped

Crazythingsido2

the collar thing on my vac disconnect was broken. i got a new one its good now. but im plannin on swapping in a new d30 with out the disco