What was found
DURING CLIMB OUT #1, #2 & #4 BLEED VALVE OFF LIGHT ILLUMINATED WITH BLEED SWITCHES SELECTED ON, CYCLED VALVES WITH NO RESOLUTION.(<P ><SPAN>REMOVED AND REPLACED #3 BLEED PRV CONTROLLER IAW B747 AMM 36-11-19, REMOVED AND REPLACED #3 PRSOV IAW B747 AMM 36-11-04, REMOVED AND REPLACED #2 PRSOV IAW B747 AMM 36-11-01, FOUND #3 PRVC MUSCLE AIR LINE LEAKING, REPLACED PACKING IAW B747 AMM 36-11-19. OPS CHECK OF #2 AND #3 PRSOV GOOD IAW B747 AMM 36-11-04, OPS CHECK OF #3 PRVC GOOD IAW B747 AMM 36-11-20.</SPAN></P> / <P> </P>)