Brake Master Cylinder Valves
Thanks 67Dart273 for the great picture. I was wrong, it takes more than needle-nose pliers. That brings up a good point. If your 1974 MC looks like the picture, with a larger reservoir aft (for front brakes), it is already for a front disk brake car, so won't have a residual valve on the fronts (as in picture). If for a drum-drum car, the 2 reservoirs will be the same size. That is how us clever FABO guys can see just a photo of an engine bay and say "nice that you have disk brakes".