What was found
STRONG ODOR WAS SMELLED AFTER TAKEOFF. TURNED OFF CABIN PACK & ODOR WENT AWAY. VERIFIED ODOR WAS COMING FROM CABIN PACK WHEN WE TURNED IT BACK ON PRIOR TO LANDING. RAN THE APU AND VERIFIED A DISTINCT ODOR COMING FROM THE CABIN PAC. RAN THE RT ENG WITH THE APU BLEED AIR OFF, CABIN PAC OFF, THE ISOLATION VLV OPEN & THE COCKPIT PAC ON. DID NOT NOTICE AN ODOR. SHUTDOWN THE APU & ENG. REMOVED BOTH COALESCERS & FOUND THE CABIN SOCK HAS THE DISTINCT ODOR WHILE THE COCKPIT ONE HAS NO ODOR. CLEANED THE CABIN SOCK & THE COALESCER HOUSING AS MUCH AS POSSIBLE. CHECKED THE INLET & EXHAUST OF THE APU & RT ENG FOR OIL, NONE NOTED. IAW MM 12-10-01 REV 46. REMOVED COALESCER END CAPS & REMOVED COALESCER SOCKS. INSTALLED ONE NEW SOCK, PN 746451-3 IN COCKPIT WATER SEPARATOR. PN OFF 746451-3, SN OFF N/A. INSTALLED ONE NEW SOCK, PN 746451-3 IN CABIN WATER SEPARATOR. PN OFF 746451-3, SN OFF N/A. RAN APU & LEAK CHECKED COALESCER END CAPS, NO LEAKS NOTED. TURNED ON APU AIR, NO OIL SMELL NOTED FROM ANY WEMACS.