What was found
WHEN TRANSFERRING BLEED AIR 10TH STAGE FROM ENGINE TO APU WE GOT A WET SOCK SMELL . VERY UNCOMFORTABLE SMELL. CORRECTIVE ACTION: REMOVED AND DISASSEMBLED LH AND RH WATER SEPERATORS P/N: 85020-6 AND REPLACED CUSTOMER SUPPLIED NEW CONDENSER BAGS P/N:180849-28 AS REQUIRED. REASSEMBLED LH AND RH WATER SEPERATORS P/N: 85020-6. PERFORMED OPS CHECK, OPS CHECK GOOD. REMOVED APU PN: 3800804-2 SN: P584. INSTALLED REPAIRED APU PN: APU P/N: 3800804-1 S/N: P474 IN REF TO CL-650 AMM 49-10-00, PERFORMED OPS CHECKS AND LEAK CHECKS WITH NO DEFECTS NOTED. WORK IN REF. AMM TASK 21-51-13. .