What was found
(CAN) ON FINAL APPROACH, MLG WOULD NOT RESPOND TO SELECTOR LEVER MOVEMENT. MLG SUBSEQUENTLY LOWERED USING EMERGENCY HAND PUMP. UNEVENTFUL LANDING CARRIED OUT. MAINTENANCE DETERMINED MLG MOTOR 60 AMP CIRCUIT BREAKER HAD OPENED. BREAKER IS LOCATED IN LT WING CENTRE SECTION LEADING EDGE. A/C PLACED ON JACKS, BREAKER RESET & GEAR RETRACTION TEST PERFORMED. GEAR RETRACTED NORMALLY & CYCLE COMPLETED WITHIN MAINT MANUAL TIME LIMITS, HOWEVER MOTOR REPLACED ON SUSPICION IT HAD CAUSED BREAKER TO OPEN. REPLACED MOTOR (0 TSO) CYCLED GEAR NOTICEABLY QUICKER & QUIETER THAN ORIGINAL MOTOR.