I have a Deutz-Allis 916 that I have owned a few weeks and have found a little valve which is too far gone to leave as is. What I am referring to the the charge relief valve according to what I see in the parts breakdown. Is this part something I can just eliminate with a plug or is is crucial? The parts I have on my rig are too gone to reuse and it seems that a solid plug may be as good as the simple valve that is there, or is this a intregal system that must be there? My tractor worked OK when I bought it and my mission has been to do a very light refreshment opposed to a total restoration. I found some hot rod engine paint that was as close to spring green as I could find and after some stern degreasing then paint, it looks much better than expected. Now the objective is to change the fluids and attend to the maintenence its not had since maybe new.