What was found
FUEL IMBALANCE AT FL370, RAN QRH 12.2 CROSSFEED SELECTOR INOPERATIVE. FOUND C/B CROSSFEED VALVE POPPED. BOTH ENGINES SEEMED TO BE RUNNING ON LT TANK. FUEL IMBALANCE QUICKLY GREW TO 2000 POUNDS. DIVERTED, NORMAL LANDING. ACFT GROUNDED. DIVERSION - 16 MINUTES. PERFORMED CROSSFEED VALVE OPS TEST, REF AMM 28-22-21-710-801, OPS TEST GOOD. REMOVED ACTUATOR FUEL CROSSFEED VALVE, REF AMM 28-22-21-000-801. INSTALLED ACTUATOR FUEL CROSSFEED VALVE, REF AMM 28-22-21-400-801. PERFORMED CROSSFEED VALVE OPS TEST, OPS TEST GOOD, REF AMM 28-22-21-710-801. COMPLIED WITH CONDITIONAL INSPECTION, AMM 05-51-48-211-801 AND 05-04-210-021, NO INSPECTION REQUIRED.