What was found
(CAN) ACFT TAXIED AWAY FROM RAMP. ON ARRIVAL TO THE RUNWAY THRESHOLD THE FLT CREW NOTICED A LOSS OF HYD FLUID PRESSURE AND HYD QTY. MAINTENACE WAS ALERTED AND ACFT WAS TOWED BACK TO RAMP. HYD FLUID WAS FOUND COMING FROM THE BELLY DRAINS AFT OF THE NOSE GEAR, AND MAINTENANCE FOUND THE NLG LOCK ACTUATOR LEAKING AND THE LOCK ACTUATOR BRACKET WAS CRACKED. BRACKET AND ACTUATOR WERE REPLACED, HYD PUMP CASE DRAIN FILTERS REPLACED, PRESS FILTER REPLACED, NO CONTAMINANTS IN FILTERS, GEAR SWINGS AND LEAK CHECKS CARRIED OUT, ENGINE RUNS C/O. ACFT CHECKED SERVICEABLE.