What was found
FUEL ODOR IN COCKPIT AND SUPER NUMERARY AREA PRESENT AFTER APU WAS STARTED AND PACKS WERE ON. ONCE APU AND PACKS WERE TURNED OFF. ODOR SUBSIDED & REOCCURRED WHEN EXTERNAL AIR AND PACKS WERE TURNED ON. REPLACED COALESCER BAGS IAW MM 21-51-16-03 FOUND TRIM TANK SHROUDED. FUEL LINE SHROUD DISCONNECTED AT AFT CARGO FWD BULK HEAD, CONNECTED SHROUD, RAN PACKS WITH APU AIR, ENGINE BLEED AIR, AND GROUND AIR. NO FUEL SMELL DETECTED IN COCKPIT OR SUPER NUMERARY.