Have you ever looked under the boot on your loader valve handle? I think, but not sure, there is a adjustable relief to the side of your spools. From looking at the parts diagram, it's hard to tell but it looks like there is one. If not, there is no system protection for the loader. The hydraulic schematic shows line from pump straight to loader valve then to block relief and to your remotes and 3pt. Remotes and 3pt would be protected and loader would not.