What was found
FLIGHT 9368, AFTER TAKEOFF, ACCELERATED TO 200 KTS, AIRPLANE HAD A TENDENCY TO BANK RIGHT. ACCELERATED TO 250 KTS, ACFT TRIM PAST THE FIRST TRIM MARK ON AILERON TRIM INDICATOR WITH ZERO AILERON TRIM & NO PILOT INPUT, THE ACFT STARTED A CONTINUOUS ROLL TO THE RIGHT. FUEL WAS BALANCED, N1'S WERE MATCHED & NO VIBRATION WAS FELT IN FLIGHT CONTROLS. IP FOUND NR 1 PCU LINK WORN & FAILED BACKLASH CHECK. R & R NR 1 PCU LINK. PASSED RECHECK OF CHECK IAW AMM 27-14-00.