What was found
FLT 640, SFO-JFK, DIVERTED TO LGB, ENG 1 AND ENG 2 BLEED FAULTS DURING TAKEOFF DEPARTURE PHASE, ENG 2 BLEED FAULT OCCURRED FIRST. REPLACED NR 2 ENG THERMOSTAT FIN7170HM2. LEAK CHECK GOOD. REF AMM 36-11-06. REMOVED AND REPLACED NR 1 ENG FAN AIR VALVE THERMOSTAT FOR TROUBLESHOOTING IAW 36-11-43-04 71770HM1. LEAK CHECK OK. (S)