What was found
HYDRAULIC FLUID LOSS OCCURRED ON CLIMBOUT. EMERGENCY CHECKLIST WAS ACCOMPLISHED. SYSTEM WAS ISOLATED, HYDRAULIC QUANTITY STABILIZED ABOVE STANDPIPE. WHEN AUX PUMP WAS TURNED ON DURING DESCENT, LOSS OF FLUID RESUMED UNTIL SELECTING LANDING GEAR DOWN AND FLAP POSITION. FOUND HYDRAULIC LINE LEAKING FROM AFT MANIFOLD TO FORWARD MANIFOLD ON RIGHT MAIN LANDING GEAR BOGIE TRIM CYLINDER. INSTALLED NEW LINE IAW DC8 SRM.