What was found
(AUS) AFTER TAKEOFF AND LANDING GEAR RETRACTED, THE HYDRAULIC PRESSURE CYCLED AND TRIPPED THE HYDRAULIC MOTOR CIRCUIT BREAKER. THE LANDING GEAR THEN PARTIALLY EXTENDED BY ITSELF. AN EMERGENCY EXTENSION DID NOT FULLY EXTEND THE NOSE GEAR. BY STEEP TURNING AT LOW AIRSPEED, THE NLG EXTENDED, BUT NO GREEN LIGHT CAME ON. PROBLEM WAS TRACED TO A LEAKING SHAFT SEAL IN THE LT MLG ACTUATOR.