What was found
NR 2 MANIFOLD FAIL LIGHT ILLUMINATED DURING CLIMB, CHECKLIST COMPLETE, LIGHT WENT OUT. DUMPED FUEL AND RETURNED TO MEM. LANDED UNEVENTFULLY. *S/D* PERFORMED DECAY CHECK OF NR 2 SYSTEM REF DC10-30 JRH. DECAY TEST FAILED FOUND THE CENTER CARGO JET PUMP SHUTOFF VALVE STUCK IN THE OPEN. REMOVED AND REPLACED THE CARGO JET PUMP SHUTOFF VALVE REF DC-10MM 21-41-03-2. FOUND LOOPS IN NR 2 PYLON BAD. REMOVED AND REPLACED LOOPS D1-29, D1-28B, D1-28CREF: DC-10-30 MM 36-23-02-4. PERFORMED MANIFOLD FAILURE SYSTEM TEST PER DC10-30 MM 36-23-00-2, WITH NO DEFECTS NOTED. OPS AND LEAK CHECK OF CARGO JET PUMP SHUTOFF VALVE PER DC-10-30 MM 21-41-03-2, CHECKS GOOD. PRESS DECAY CHECK PER THE JRH CHECKS GOOD. RETURNED TO SE