TM  5-4220-231-14&P 5-3. High   Pressure (HP)   Regulator (DACC)   (CRS). See    Figure    5.2 This    task    covers Repair INITIAL   SETUP Tools Equipment Conditions General Mechanics Tool Kit Remove High Pressure Regulator trom DACC (Para. 4-4) O-ring Removal and Installation Tool or Remove High Pressure Regulator from CRS (Para. 4-27,28) Materials/Parts Reference Grease, Halocarbon (Item 13,    Appendix D) Para. 3-13 Maintenance and Reentry Control Procedures High Pressure Regulator, 13229E4575 Rags, clean, lint-free (Item 15,    Appendix D) Repair Kit, 13230E4947 Silicone Compound (Item 9,   Appendix D) Tape, Teflon (Item 19,    Appendix D) Nonionic Detergent Solution (NID)     GP (Item 17,    Appendix D) WARNING Inspect all   seating threads and sliding metal surfaces for damage that might cause leaks or faulty operation. Replace any detective items. CAUTION Clean non-metal parts with clean rags (Item 15, Appendix D) or use isopropyl alcohol (Item 1    or 2, Appendix D) followed by a thorough rinse in    clean water (Item 10, Appendix D). Any other solvents may cause damage to    parts. NOTE Perform in   a clean environment. NOTE Clean metal parts with nonionic detergent solution (NID) (Item 17, Appendix D). Wipe with clean rags (Item 15, Appendix D) to get desired level of   cleanliness. Change 5 5-9