What was found
TEN MINUTES AFTER TAKEOFF, THE RIGHT SIDE HYDRAULIC RESERVOIR LOW LEVEL LIGHT ILLUMINATED, FOLLOWED SHORTLY BY THE RIGHT SIDE MAIN PUMP LOW PRESSURE LIGHT. RETURNED TO LAX AFTER COMPLETING QRH PROCEDURES. RIGHT HYDRAULIC PUMP OUT OF FLUID APPROX 15 MINUTES. INSTALLED SERVICEABLE LEFT HYDRAULIC FLAP ACTUATOR IAW EMB MM 27-50-00. INSTALLED NEW HYDRAULIC PUMP. RAN ENGINE, NO LEAKS NOTED. CYCLED FLAPS, OPS CHECK GOOD. CHECKED ACTUATOR, NO LEAKS NOTED. ALL OPS CHECKS GOOD.