What was found
SMOKE IN ACFT. APU AUTO SHUTDOWN. APU OIL QTY IS ZERO ON FLT DECK GUAGE & READING ZERO IN THE APU BAY. APU OIL QTY AT BLOCKING READING OVER HALF FULL. DUE TO SMOKE & ODOR OF OIL FROM BOTH PACKS. C/W MM 21-51-00-3 AND R & R BOTH PACK COALESCER BAGS. REF MM 21-51-16-3. PACKS IN HOT OR COLD TEMP HAVE NO SMOKE AND NO SMELL OF OIL. OK TO CONTINUE. RELEASED FOR SERVICE IAW MEL: 49-10-01. REPLACED CLAMP ON FUEL PUMP TO OIL PUMP AND SAFTIED. SERVICED APU OIL IAW MM 4990-00-3. RAN APU IAW JRH 3-2 WITH BOTH PACKS ON FOR 20-30 MINS WITH NO SMOKE OR ODOR OF OIL IN COCKPIT.