What was found
APU SMOKE: AFTER RUNNING THE APU FOR ABOUT 10 MINUTES WE SELECTED BLEED AIR ON. SMOKE BEGAN TO FILL THE COCKPIT AND CABIN. // SIGNOFF// REMOVED AND REPLACED INOP APU WITH REPAIRED UNIT. TRANSFERRED STARTER GENERATOR (PN: 9914685-1, SN:P,4908), WIRING HARNESS AND THE FIRE DETECT LOOP TO THE INSTALLED UNIT. SERVICED APU OIL TO PROPER LEVEL PER CE-680A MM. 12-20-00. DE-SERVICED THE FUEL SYSTEM OIL PERSEVERATION AS REQUIRED, REF. CE-680A MM. 49-10-00, (OFF/PN: 3800785-1 OFF/SN: P-935) (ON/PN: 3800785-1 ON/SN: P-277) TORQUE WRENCHES: JE1811, JE0858 CONSUMABLES USED: SAFETY CABLES, 2380 OIL 1 QT. SERVICED FUEL SYSTEM OIL PERSEVERATION AS REQUIRED, REF. CE-680A MM. 49-10-00. PERFORMED APU ADJUSTMENT AND TEST !AW CE-680A MM 49-10-00, OPS CHECKED GOOD. 'LEAKED CHECKED GOOD: NO DEFECTS NOTED, UPDATED APU HOURS THRU APU EECU T08351,3 IN REF TO 8130.