What was found
ON GND, APU ONLY, ACFT FILLED WITH SMOKE. REMOVED DEFECTIVE APU & INSTALLED A REPAIRED CUSTOMER SUPPLIED APU. COMPLIED WITH APU OPERATIONAL CHECKS & LEAK CHECKS WITH GOOD RESULTS. ALL WORK DONE IAW MM 49-10-00 & MM 49-20-00. NO OTHER DEFECTS NOTED & PROGRAMMED ECU IAW MM 49-20-00. PER CUSTOMER'S REQUEST REPLACED BOTH COALESCER SOCKS. REMOVED LT & RT COALESCER SOCK, PN 746451-3 & INSTALLED NEW LT & RT COALESCER SOCK SUPPLIED BY CUSTOMER. ALL WORK DONE IAW CH 12-10-01. AWAITING OPS & LEAK CHECKS. PREPARED ACFT FOR APU & OPS & LEAK CHECKS OF THE COALESCER SOCKS & APU. PERFORMED OPS & LEAK CHECKS OF COALESCER SOCKS & APU WITH NO ISSUES NOTED.