What was found
DURING THE 6 YEAR/8,000 CYCLE INSPECTIONS OF THE NOSE LANDING GEAR ASSEMBLY (101-820029-29), THE CHROME PISTON (101-820075-5) OF THE LOWER ABSORBER ASSEMBLY WAS SCORED. SCORING OF THE PISTON CAN DAMAGE THE INTERNAL O-RING SEAL CAUSING THE NOSE LANDING GEAR TO LEAK AND CAN DAMAGED THE UPPER AND LOWER BEARINGS OF THE UPPER ABSORBER ASSEMBLY (99-820100-5). PISTON SCORING CAN BE CAUSED BY A WORN SCRAPER (111190-8) AND WIPER RING (111506-8) ALLOWING DEBRIS BETWEEN THE BEARINGS AND PISTON DAMAGING BOTH. THESE ITEMS ARE NORMAL REPLACEMENT ITEMS DURING THE 6 YEAR/8,000 CYCLE INSPECTION/OVERHAUL OF THE LANDING GEAR. RECOMMEND VISUALLY INSPECTING THE LANDING GEAR PISTONS AT LEAST BEFORE EACH FLIGHT, MAKING SURE THAT ALL THE PISTONS ARE CLEAN.