What was found
IN FLIGHT, THE LANDING GEAR HYDRAULIC PUMP CIRCUIT BREAKER POPPED WITH THE GEAR UP, THE GEAR WAS LOWERED AND A SAFE LANDING WAS MADE. AIRCRAFT WAS PLACED ON JACKS AND THE GEAR SYSTEM WAS OPERATIONAL CHECKED. WITH THE GEAR UP AND LOCKED THE HYDRAULIC PUMP WOULD NOT SHUT OFF, A TAP TO THE UP LOCK ASSEMBLY SHUT THE PUMP OFF. UP LOCK ASSEMBLY WAS REMOVED AND INSTALLED A NEW UP LOCK ASSEMBLY. OPERATIONAL CHECK OF THE GEAR SYSTEM CHECKED NORMAL. UP LOCK ASSEMBLY WAS SENT IN FOR WARRANTY.