TM 10-8415-208-12 SECTION III.  UNIT MAINTENANCE PROCEDURES (Continued) Paragraph Air Flow Performance Test .............................................................................................................. 3-9.3.2 Leak Test ............................................................................................................................ 3-9.3.3 Cleaning ............................................................................................................................ 3-9.4 Rebreather System Maintenance Instructions............................................................................................ 3-10 Inspection ............................................................................................................................ 3-10.1 Service ............................................................................................................................ 3-10.2 Replacement ............................................................................................................................ 3-10.3 Removing/Installing Oxygen Bottle .................................................................................................. 3-10.3.1 Removing/Installing Coolant Canister .............................................................................................. 3-10.3.2 Removing/Installing Breathing Hose Assembly ................................................................................ 3-10.3.3 Removing/Installing Center Section Preformed Packing/Gaskets .................................................... 3-10.3.4 Removing/Installing Stat-O-Seal...................................................................................................... 3-10.3.5 Removing/Installing Regulator Assembly ......................................................................................... 3-10.3.6 Removing/Installing Pressure Gauge/Flow Restrictor....................................................................... 3-10.3.7 Removing/Installing Harness/Carrying Strap.................................................................................... 3-10.3.8 Removing/Installing Face Piece Hose Connector............................................................................. 3-10.3.9 Removing/Installing Face Piece Lens .............................................................................................. 3-10.3.10 Removing/Installing Head Harness .................................................................................................. 3-10.3.11 Removing/Installing Spectacle Assembly......................................................................................... 3-10.3.12 Removing/Installing Restrictor ......................................................................................................... 3-10.3.13 Removing/Installing Demand Valve Core ........................................................................................ 3-10.3.14 Removing/Installing Relief Valve Preformed Packing ...................................................................... 3-10.3.15 Testing  3-10.4 Plumbing Leak Test ......................................................................................................................... 3-10.4.1 Breathing System Leak Test ............................................................................................................ 3-10.4.2 Oxygen Constant Flow Rate Test .................................................................................................... 3-10.4.3 Face Piece Fit Test.......................................................................................................................... 3-10.4.4 Cleaning ............................................................................................................................ 3-10.5 Ready for Use Storage Procedures ........................................................................................................... 3-11 Tether Mode Equipment...................................................................................................................... 3-11.1 Encapsulating Protective Suit .......................................................................................................... 3-11.1.1 Tether Line Assembly ...................................................................................................................... 3-11.1.2 Emergency Breathing Apparatus (EBA) ........................................................................................... 3-11.1.3 Rebreather System Mode Equipment.................................................................................................. 3-11.2 Encapsulating Protective Suit .......................................................................................................... 3-11.2.1 Ice Vest ............................................................................................................................ 3-11.2.2 Rebreather System.......................................................................................................................... 3-11.2.3 General ............................................................................................................................ 3-12 Unit PMCS Procedures   ............................................................................................................................ 3-13 General ............................................................................................................................ 3-14 Preparation of the Encapsulating Protective Suit For Use ......................................................................... 3-15 Preparation of the Tether Line For Use ..................................................................................................... 3-16 Preparation of the Emergency Breathing Apparatus (EBA) For Use .......................................................... 3-17 Preparation of the Ice Vest For Use........................................................................................................... 3-18 Preparation of the Rebreather System For Use ......................................................................................... 3-19 Maintenance Instructions on Decals and Instruction Plates........................................................................ 3-20 3-18