TM 1-1520-238-23 1-410 Change 9 1.138. OVERHAUL AND RETIREMENT SCHEDULE – continued Part Name Retirement Interval Notes Retirement Interval Hours Overhaul Interval Notes Overhaul Interval Hours Part Number Main Rotor Swashplate 7-311511101 20,800 7-311511101-7 20,800 7-311511101-13 11,800 7-311511101-17 4,500 7-311511101-19 4,500 7-311511101-23 4,500 M/R Swashplate Bearing 7-311511103 2,250 10 7-311511103-3 2,250 10 7-311511103-5 2,250 10 M/R Lower Bearing Retainer 7-211511105-9 22,500 7-211511105-11 11,800 M/R Non-Rotating Swashplate 7-311511107 18,500 M/R Rotating Swashplate 7-311511102 22,500 M/R Upper Bearing Retainer 7-211511104-7 22,500 7-211511104-9 22,500 M/R Pitch Link Assembly 7-311511135 22,500 7-311311135-3 22,500 7-311311135-5 22,500 7-311311135-7 22,500 M/R Scissors Assembly 7-311511158-3 22,400 7-311511158-5 22,400 Tail Rotor Swashplate Assembly 7-311527038-7 250 7-311527038-9 250 7-311527038-11 250 7-311527038-13 250 7-311527038-15 1,500 3 7-311527038-17 1,500 3 7-311527038-19 1,500 3 7-311527038-601 250 7-311527038-603 250 7-311527038-901 1,500 3 GO TO NEXT PAGE