My plow truck sits most of the year. Only used for plowing. Has 4 wheel posilock installed in place of factory vac. actuator. The floor trans gear shifter is stuck in place. Posilock works fine and engages 4 wheel drive. Ideas?

http://4x4posi-lok.com/app_dodge.html

 

If it sits most of the time, is the linkage simply rusted up? Might try drowning it with some good penetrating oil... See if that doesn't help.

Welcome to DF!

 

I lubed the linkage from under the truck. It moves now, but still takes a lot of force to move the shifter. Fluid is full.

 

If spraying it down got it to move a little bit keep spraying it. And working it back and fourth. A good foaming penetrating oil will do wonders.

 

Yep, probably just frozen linkage. Just keep working it with lubricant.