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Transfer case wont shift

4K views 7 replies 5 participants last post by  coalroll4power 
#1 ·
I've got a 94 with a nv4500. There isn't a tag on the transfer case that I could see. But it worked fine, then it wouldn't go into 4 high. It would engage if i held the shifter but it wouldn't stay. I had to recently replace the countershaft in the trans, now i'm moving on to the transfer case. I can't find much on what to do or what could cause the problem. I found a great write up on rebuilding the trans on here but can't find much on the transfer case. Any help would be appriciated as i need my truck.
 
#3 ·
Is your linkage correctly adjusted? I had a similar problem where I had to hold the lever in position to engage and stay in 4WD, the linkage had loosened up and gone out of adjustment.
 
#4 ·
^^^ what he said plus there is a detent spring and ball that might be broken. it is under what looks to be a drain plug but is not.
 
#7 ·
Update....the synchro ring was seized. On a good note looks like everything is brand new inside. Thanks for the help.
 
#8 ·
for future reference also if you have to hold it into gear on the tcase it could always be the shift forks inside the t case. they are pretty easy to do if your inclined and can read a book or the service manual. i had to do the shift forks on two of my friends trucks.. its a common problem with these np241 becouse they use nylon spacers inside of them on the forks and they slip then your medal on medal
 
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