Tony..
It is not as if your brakes are on a Formula l racing car...
For the amount of use they will be getting I would suggest a good solvent cleaning and a careful baking with the torch and a good general clean up should suffice for the brake linings...
I would also suggest a change of packing to a teflon based water pump packing material,the rope type would be better than the original packing material used at the time of manufacture..
Any pump supplier will have the right packing material in all shapes and sizes..