TM 5-4220-227-145-33. Shutoff Valves (Oxygen).This task covers: ReplaceINITIAL SETUP:ToolsEquipment ConditionGeneral Mechanic's Tool KitChamber shut down (para. 2-15).(NSN 5180-00-177-7033)Materials/PartsShutoff ValveBands, Rubber (Item 4, Appendix E)Bags, Plastic (Item 3, Appendix E)Tape, Teflon (Item 21, Appendix E)Replace.(figure 5-52)WARNINGTo prevent the spread of disease, serious injury and/or death, oxygen breathing systemsmust be maintained hygienically clean and free from dust, dirt, and all hydrocarboncontamination. Refer to oxygen system prework procedures para. 4-10 to avoid violatingthis warning.CAUTIONUse two wrenches to remove and install all piping components to avoid damage.NOTEEnsure system is depressurized prior to beginning this task.Gain access to OXL-021 the I/L low pressure O2 supply valve, and OXL-020 the O/L O2supply valve by reaching up from bottom and behind the instrument panel. Replacement ofthe OXL-021 and OXL-020 is the same.(1) Unlatch two latches (1), open enclosure door (2) and install two supports (3) and pins (4).(2) Remove nut cap (5) and lockwasher (6) that secures the valve handle (7) to valve (8) and remove handle.5-110
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
