Case 580SE dry brakes replacement.

I have had this 1984 580 since 2015 and have been using it with one, (Left) brake. I am now at the point where it can be down for a while and I have been taking the right brake off. It was full of oil and a few years ago I replaced the large seal. Never knew there was a smaller seal but now both will be replaced. Here is my dilemma. I am also replacing both back tires and have the right wheel still off. I have the floorboards up and have removed it all down including the brake housing....

Case 580SE dry brakes replacement.

Case 580SE dry brakes replacement.