What was found
JUST PRIOR TO PUSHBACK F.A. IN AFT GALLEY INFORMED ME OF A " DIRTY SOCK " ODOR IN GALLEY. C/A: REMOVED AND REPLACED BOTH RECIRC FILTER PER A320 AMM 21-21-41. C/W WORK CARDS 0550-2002, 4900-2001, 4916-2001 AND 7900-2001 WITH NO FINDINGS. RAN APU FOR SEVERAL HRS WITH PACKS ON, RAN ENGINES WITH PACKS ON WITH NO ODOR. A/C OK FOR SERVICE