SECTION II TM 9-2320-285-24P (1) (2) (3) (4) (5) (6) ITEM SMR PART NO CODE CAGEC NUMBER DESCRIPTION AND USABLE ON CODES (UOC) QTY GROUP 1208 AIRBRAKE SYSTEM FIG.  84 RATIO REDUCING VALVE 1 PFFFF 06853 289148 VALVE, VENT REDUCING..................................................... 1 2 XAFZZ 06853 292495 .COVER................................................................................ 1 3 PAFZZ 06853 291924 .SCREW, ASSEMBLED WAS  ............................................... 4 4 PAFZZ 06853 240212 PACKING, PREFORMED PART OF KIT P/N........................... 1 289500.................................................................................. 5 PFFZZ 06853 290371 .PISTON, BRAKE, UPPER  .................................................... 1 6 PFFZZ 06853 291534 .SPRING, HELICAL, COMP PART OF KIT P/N........................ 1 289500.................................................................................. 7 PAFZF 06853 289143 .PISTON, BRAKE VALVE....................................................... 1 8 KFFZZ 06853 NPN-6 ..SPRING, PART OF KIT PART OF KIT .................................. 1 P/N 289500 ........................................................................... 9 KFFZZ 06853 NPN-6 ..VALVE, (PART OF KIT PART OF KIT ................................... 1 P/N 28S500........................................................................... 10 PAFZZ 06853 292490 ..PISTON, VALVE  ................................................................. 1 11 PAFZZ 06853 239898 .PACKING, PREFORMED PART OF KIT P/N.......................... 1 289500 ................................................................................. 12 PAFZZ 06853 239743 .PACKING, PREFORMED PART OF KIT P/N.......................... 1 289500.................................................................................. 13 PFFZZ 06853 292487 .SPRING, HELICAL, COMP.................................................... 1 14 XAFZZ 06853 292491 .BODY .................................................................................. 1 END OF FIGURE 84-1