What was found
CREW REPORTS TOOK OFF WITH NORMAL HYDRAULIC SYS INDICATIONS AND QUANTITIES, 45 MINS OUTSIDE ORD RECEIVED A CYAN -HYDRAULIC 2 LOW QTY-. RAN QRH, PROBLEM REMAINED. PRESSURE WAS 3000 PSI, QUANTITY 2%, 10 MINS LATER RECEIVED EICAS -HYDRAULIC SYS 2 LOW PRESS-, BOTH QUANTITY AND PRESSURE NOW AT 0. EMERGENCY LANDING AT ORD. RAN LOSS OF HYDRAULIC SYS 2 CHECKLIST & EXTENDED GEAR W/ GEAR PULL-LEVER. LANDING NORMAL. BRAKING & STEERING W/ RUDDER ADEQUATE TO EXIT RUNWAY. TOWED TO GATE WITH NO FURTHER INCIDENT. MX REPORTS HYDRAULIC FLUID COMING FROM NR 2 ENGINE COWL. FOUND NR 2 ENGINE DRIVEN HYDRAULIC PUMP (EDP) LEAKING HYDRAULIC FLUID. MAINTENANCE REMOVED AND REPLACED THE EDP.