TM 55-2840-241-23 Table   13-1.   Overhaul   and   Retirement   Interval   -   (Cont.) Overhaul   Interval (hr) Retirement Interval   (hr) Item Part   Number 2000 Fuel    Control 1800 Fuel   Nozzle 1800 Governor 1800 Governor 1800 Governor 1800 Governor 2000 Governor , 2000 Governor 2000 Governor 2000 Governor 2000 1800 3600 1800 1800 1800 1800 4550 4550 Governor Compressor Impeller Gearbox Turbine Turbine First-Stage   Wheel Second-Stage   Wheel Third-Stage   Wheel Fourth-Stage   Wheel 2524911-3 6890917 6895673 (2524589-2) 6898888 (2524589-5) 23005489 (2524589-3) 23006274 (2524912-1) 23007877 (2524912-2) 23007865 (2524769-l0) 23007506 (2524769-11) 2524912-2 (23005489) 2524912-3 6890570 6876873 6879863 6898739 6887635 23038244 6886407 6898782 6877092 23001967 6899373 6891594 6853279 13-2 Change 16