Organizational Maintenance Troubleshooting -cont

TM 5-4220-22614&P Tale 4-2. Organizational Maintenance Troubleshooting MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 3. DEMAND REGULATOR BREATHING RESISTANCE TOO HIGH a. Check for too low air supply pressure. Adjust supply pressure to minimum 120 psi over ambient. b. Check for regulator out of adjustment. Adjust regulator (para 4-15). 4. DEMAND REGULATOR DOES NOT SUPPLY AIR a. No air in umbilical. Ensure proper operation of air supply system. b. Check for blocked regulator or worn or damaged internal regulator parts. Disassemble, clean, repair, and adjust regulator (para 4-15). 5. ONE-WAY VALVE ALLOWS BACK FLOW a. Foreign matter in valve. Replace valve (para 4-14). b. Valve is damaged. Replace valve (para 4-14). SECTION V. MAINTENANCE PROCEDURES 4-10. Superlite 17B Diving Helmet Maintenance. The diving helmet consists of the helmet assembly and helmet adapter hose. Organizational maintenance procedures for these components are covered in the following paragraphs. 4-11. Helmet Assembly Maintenance. Organizational maintenance procedures for the helmet components are covered in paragraphs 4-12 through 4-26. 4-5