What was found
AIRCRAFT EXPERIENCED A HARD LEFT YAW AT V1, FOLLOWED BY POSITIVE AIRCRAFT CONTROL TO ROTATION. GEAR HANDLE WAS LOCKED IN THE DOWN POSITION AFTER TAKEOFF. DIVERTED AIRCRAFT TO CESSNA NY SERVICE CENTER. APPROACH AND LANDING WAS NORMAL, HOWEVER, NOSE TIRE WAS BADLY SCUFFED TO THE CORE. TECHNICIANS FOUND THE NOSE POWER STEERING UNIT FAILED THE CENTERING SPRING TEST AND BINDING ON THE UNIT. REPLACED NOSE STEERING UNIT.