What was found
DFW - FLT 5 - AFTER TAKEOFF DFW-HNL, NR 3 HYDRAULIC TEMPERATURE REACHED 103 DEGREES AND CONTINUED TO CLIMB WITH BOTH ENGINE DRIVEN PUMPS OFF AND THE 2-3 REVERSIBLE PUMP OPERATING. AIRCRAFT RETURNED TO DFW, DUMPED FUEL, AND LANDED WITHOUT INCIDENT. REPLACED NR 3 HYDRAULIC RESERVOIR. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)