RE: 95 dodge ram 4x4 activator problems... vacuum leaks
Those vacuum lines must be sealed tight. You used some kind of patch hose, or ? Not breaking chops, just confused a little. Is the line just capped off? Is it exposed? You can buy vacuum kits with adapeters to help put line back together. Buy new VACCUM, not pressure, hose and patch in a new piece. Both those vacuum lines MUST be working.
Did both hoses come of, and they could have been put on wrong? If you have a major vacuum leak, you should hear air "rushing", if you have some type of scope or something.
I assume the noise you hear is the shift collar. It could very well be vacuum related. Get the vacuum line repaired first, and make sure they are attached in their proper positions. Also make sure the vehicle has proper amount of vaccum as well, or you will never be able to fix anything. If that doesn't solve your problem, then you will have to remove the cover to the vacuum shift motor. You may have broken linakge between the shift fork and the vaccum servo. I doubt if the intermediate shaft has shifted, though it can happen.
You might have some filings floatin around as well. Make sure to change the axle fluid. I'd drop the cover.
Good luck, hope this helps. PM me if you need any more help. I have all the 95' manuals.