What was found
AIRCRAFT 5029, AS WE PULLED INTO THE GATE, JUST AFTER TURNING ON APU BLEED AIR, GOT A SMELL OF PAINT OR PAINT THINNER. LASTED ABOUT 30 SECONDS TO 1 MIN. WENT AWAY AT SHUTDOWN. CORRECTIVE ACTION: REPLACED NBR 2 ENGINE. (LP 8220957, 1450304)