What was found
WHILE PRESSURIZING WATER SYSTEM FOR OPERATION APU SHUT ITSELF DOWN. STARTED APU AND AFTER 30 SECONDS THE APU SHUT ITSELF DOWN WITH A FAULT LIGHT PERFORMED BITE CHECK AND FOUND FAULT CODE 49 94299 PERFORMED FIM 49 90 00 810 809. REMOVED AND REPLACED OIL FILTERS ON APU FOUND THAT THE STARTER/GENERATOR SCAVANGE FILTER WAS VERY CONTAMINATED WITH SOME TYPE OF MATERIAL AND VERY BLACK IN COLOR ALSO THE FILTER FOR THE LUBE UNIT WAS ALSO VERY BLACK AND A LARGE AMOUNT OF WHAT SEEMED TO BE CARBON WAS BUILT UP IN THE FILTER BOWLS. WITH THE ADVICE OF TECH SERVICES AND SEAMC REMOVED AND REPLACED THE STARTER/GENERATOR REF MM 49 41 21. REPLACED THE APU OIL REF MM 12 13 31 OPS & LEAK CHECK GOOD. THEN REMOVED & REPLACED THE OIL FILTERS ONCE AGAIN REF MM 49 91 12 ALL OPS & LEAK CHECK GOOD.