What was found
(CAN) RUDDER PEDAL ADJUST MECHANSIM POOR OPERATION ATA CHAPTER - 2720 RUDDER & TAB ACTION TAKEN/COMMENTS - CREW REPORTED RUDDER NOT CENTRING. RUDDER PEDAL ADJUST MECHANISM INSPECTED AND FOUND TO BE STICKING AND NOT FREE/SMOOTH IN OPERATION. 6)L/H PEDAL PIVOT POINT FOUND TO BE VERY STIFF. 5)RFTU DISCONNECTED, FAULT REMAINS. 4)RUDDER CONTROL CIRCUIT BEING BROKEN DOWN 3) ADJUSTER RE ASSEMBLED AND FAULT REMAIINS 2)ADJUSTER BEING DISMANTLED ALL COMPONENTS CLEANED AND REASSEMBLED. AIRCRAFT RETURNED TO SERVICE.