What was found
(CAN) PILOT COMPLAINED OF NLG WHEEL SHIMMY ON LANDING. DURING INVEST FOUND EXCESSIVE PLAY IN NLG STEERING ACTUATOR & TELESCOPIC LINKS. A/C BROUGHT TO HANGER & PLACED ON JACKS. FOUND THAT WHEN YOU MOVE NOSE WHEELS LT & RT STEERING ACTUATOR MOVING FORE & AFT. ATTACH BOLTS FOR CENTERING SPRING WERE ALSO LOOSE & ASSY WAS MOVING FORE & AFT. DUE TO MOVEMENT OF ACTUATOR, INPUT END GLAND NUT OF ACTUATOR WOULD OPEN UP CAUSING A HYD LEAK. STEERING ACTUATOR TRANSFER TUBE REMOVED & FOUND DAMAGED IN CENTRE OF TUBE. A SERVICEABLE TUBE, STEERING ACTUATOR, TELESCOPIC LINKS & CENTERING SPRING WHERE FITTED TO A/C. DURING CHECKS FOUND STEERING LIMIT SWITCH U/S. SWITCH REPLACED. CHECKS CARRIED OUT WITH NO DEFECTS.