What was found
WHILE TROUBLESHOOTING HYDRAULIC SYSTEM 1 PUMP FAIL FOUND LEFT GROUND SPOILER ACTUATOR CRACKED. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE HYDRAULIC PUMP & THE GROUND SPOILER ACTUATOR: PART # 3604401003. ALSO REMOVED AND REPLACED O-RING: PART # NAS1611-014A. O-RING: PART # NAS1612-4A. O-RING: PART # NAS1612-8A. PACKING: PART #NAS1612-10A. O-RING: PART # SDI3030290-113. GASKET: PART # AS3492-01. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.