2-28 Change 1 SEMI-ANNUAL (3,000 MILE) PMCS PARTS LIST ITEM NO. PART NUMBER NSN NOMENCLATURE QTY TM 9-2320-280-20-1 ANNUAL (6,000 MILE) PMCS PARTS LIST ITEM NO. PART NUMBER NSN NOMENCLATURE QTY 1. MS51943-31 5305-00-061-4650 Locknut 1 2. 5593033 5310-00-252-2999 Nut and Lockwasher Assembly 4 3. MS21245-L10 5310-00-449-2381 Locknut 4 4. MS35756-8 5315-00-616-5526 Woodruff Key 1 5. MS24665-355 5315-00-012-0123 Cotter Pin 1 6. MS51943-43 5310-00-061-4651 Locknut 1 7. MS51943-35 5310-00-935-9021 Locknut 1 8. MS51943-39 5310-00-488-3889 Locknut 4 9. MS51967-18 5310-00-763-8919 Locknut 2 10. MS35338-45 5310-00-407-9566 Lockwasher 2 11. PH13 2940-00-082-6034 Filter, Fluid, Engine Oil 1 1. MS51943-31 5305-00-061-4650 Locknut 1 2. 5593033 5310-00-252-2999 Nut and Lockwasher Assembly 4 3. MS21245-L10 5310-00-449-2381 Locknut 4 4. MS35756-8 5315-00-616-5526 Woodruff Key 1 5. MS24665-355 5315-00-012-0123 Cotter Pin 1 6. MS51943-43 5310-00-061-4651 Locknut 1 7. MS51943-35 5310-00-935-9021 Locknut 1 8. MS51943-39 5310-00-488-3889 Locknut 4 9. MS51967-18 5310-00-763-8919 Locknut 2 10. MS35338-45 5310-00-407-9566 Lockwasher 2 11. PH13 2940-00-082-6034 Filter, Fluid, Engine Oil 1 12. 5589121 4330-01-190-3579 Filter Element Kit, Fuel 1