What was found
MCO - FLT 2802 - ON CLIMB-OUT FROM MCO, AT ABOUT 4,000 FEET, THE NR 1 ENGINE CSD HIGH OIL TEMPERATURE LIGHT ILLUMINATED. THE APU WAS ALREADY ON MEL SO THE FLIGHT RETURNED TO FIELD AT MCO. FLIGHT LANDED WITHOUT FURTHER INCIDENT AND TAXIED TO THE GATE NORMALLY. NO EMERGENCY WAS DECLARED. MAINTENANCE FOUND THE NR 1 ENGINE CSD OIL OVERSERVICED. SERVICED OIL TO PROPER LEVEL. RAN ENGINE. OIL TEMPERATURE CHECKS GOOD. CLEARED MEL ON APU BY REPLACING A LEAKING O-RING AT THE APU COMPRESSOR DISCHARGE PRESSURE T-FITTING. OPERATIONAL CHECK GOOD. (M)