Not seen that pump on my 595 or 480 but I’d imagine that pump may have failed from debris from you gearbox. Is the pump seized or just not producing flow. If it’s no flow the filter may be plugged causing the pump to overheat from lack of lubrication for itself. The in-line part could be a screen filter. Depends if it’s on the pressure or suction side. Take it out and look. Quicker than waiting for speculative reply’s. What the header drive gearbox on.