What was found
RIGHT BLEED TRIP OFF AT FL 380, RESET FOLLOWING QRH. OCCURRED DURING LEVEL FLIGHT STABILIZED THRUST, MAX DUCT SPLIT OBSERVED PRIOR TO TRIP OFF WAS 4 PSI. PERFORMED PNEUMATIC TROUBLESHOOTING IAW AMM 36-11-00-700-804 AND PNEUMATIC HEALTH CHECK IAW AMM 36-11-00-700-801. USING PNEUMATIC TESTER. FOUND NR 2 ENG PCCV VALVE BAD AND SEALS. REPLACED PCCV VALVE AND SEALS IAW AMM 36-12-02-000-801 AND AMM 36-12-02-400-801. FINISHED HEALTH CHECK AND FOUND NO OTHER DEFECTS. REPLACED 390 PCCV SENSOR AND 490 OVERTEMP SENSOR PRECAUTIONARY IAW AMM 36-12-03-000-806/ 36-12-03-400-801 AND AMM 36-11-08-000-801/ AMM 36-11-08-400-801.