What was found
AIRBORNE 1.5 HRS AT FL333 HYD SYSTEM 1 FLUID LEVEL DROPPED TO 0.0 LEVEL II HYD 1 FAIL ILLUMINATED, QRH REVIEWED. FOUND NIPPLE FITTING LEAKING, FWD OUTBOARD FITTING ON THE TOP OF HYD MANIFOLD WHERE THE 4 FILTERS ARE LOCATED. REMOVED RT PUMP'S PRESSURE LINE THAT RUNS FROM RT PUMP TO HYD MANIFOLD DUE TO LINE LEAKING. REMOVED AND REPLACED BOTH UPPER AND LOWER HYD PUMP PER MD-11 MM 29-11-20-4 AND INSTALLED NEW PRESSURE LINE. REMOVED AND REPLACED ALL FILTERS ON THE MANIFOLD PER MD-1129-12-41-2. INSTALLED NEW FILTERS PER MD-11 M/M 29-12-41-2.