What was found
FLT NR 5148 PILOTS REPORTED THE RT MLG WOULD NOT RETRACT UPON TAKEOFF CLIMB. UPON GEAR RETRACTION THE PILOTS REPORTED THE RIGHT MAIN RED LIGHTS ON SYSTEMS A & B STAYED ILLUMINATED. PILOTS TRIED CYCLING THE GEAR A COUPLE OF TIMES WITH THE SAME RESULT. MX SERVICED HYD FLUID IAW MM 12-13. SWUNG GEAR NINE TIMES, HEATED HYDROPACKS, REMOVED DE-ICE FLUID, CLEANED GEAR, CLEANED GEAR DOORS. ALL OPS CHECKED GOOD AND SUBSEQUENT OPS CHECK FLT SATISFACTORY. MX R & R RT MLG ACTUATOR PER EMB-120 MM 32-52. OPS CHECK GOOD.