1976 K20 sub 205 transfer case shifting

[orange72sub]

Hey guys need a little help. I purchased a 72 K20 sub with a 76 K20 sub drivetrain and frame under it. The truck runs good and shifts fine too, but when I go to put it into 4hi it won't allow me to do so, I can how ever shift it to neutral and 4low and back to 2wh but not too 4hi. I am assuming that the shift pattern is all in align and 4hi is straight back to the seat. The truck sat for a long time with out being shifted into gear even before I got it. The transfer case also has a bad case of the drips do I have to pull it to replace seals? I have not worked on a transfer case before but I am pretty capable of taking on a task with the right manuals. Any help would be great thanks!

[ThreeQtr]

I can't help you , but you may try the '4x4 tech' section of the forum if you haven't already.

[joe231]

My 1 ton crew had the same problem
It sat for I don't know how long.
I did some googling and found out it is a common issue.
I was able to just "bang" it into 4hi
And yes it is a straight pattern.
You will need to get a little tough with it.
Once you get it in 4hi, shift it through all of the positions a dozen times or so and you should be good to go....at least that's how it worked out with mine...

On the drips, where is it dripping from?
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[orange72sub]

Thanks Joe, I appreciate the help I'll give it a try. It really helps to know for sure the shift pattern, thanks again.
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[454Subb]

you might have to rock it a lil bit, the gear to gear has to line up inorder to mesh together. thats how mine is anyways. thats kinda the single bonus of the newer chain drive