What was found
AFTER LANDING, ON ROLLOUT, AIRCRAFT STARTED VEERING TO THE LEFT. CREW WAS UNABLE TO STRAIGHTEN OR TURN RIGHT EVEN WITH DIFFERENTIAL POWER OR RT RUDDER. AIRCRAFT WAS SHUTDOWN ON RUNWAY. TOWED TO HANGER. MECHANIC UNABLE TO DUPLICATE CONDITION, REMOVED AND REPLACED LT WHEEL AND BOTH BRAKE ASSEMBLIES AS A PRECAUTIONARY MEASURE. TAXI CHECK, OK.