High side port shrader valve leaks, can this be replaced? This one has the rubber seal at the top and valve tool won,t fit past it. Doesn't,t look like the valve assembly screws in.

 

Shouldn't be a problem

 

Yep, like Kevinkpk said it should be no problem, its usually the little valve inside that just needs to be replaced and not the whole hose assembly. Mechanic should be able to do it in 2 hours or so depending on how busy they are, might cost you some though if your refrigerant is low, contaminated or otherwise not reusable.