TM 5-2330-305-14
4.4.1.2 REPLACE RATIO RELAY VALVE.
TOOLS:
Combination Wench Set
SUPPLIES:
Ratio Relay Valve
Thread Sealant (TFL)
Liquid Detergent
Plastic Pail
Cotton Cloth
Solvent
1. Repressurize system by opening moisture ejectors.
2. Loosen fittings and remove six air hoses.
3. Remove two T-fittings and couplings.
4. Remove two lower couplings from valve.
S. Remove relay valve from tank.
6. Clean fitting threads on new valve with a solvent-saturated, cotton
cloth.
7. Coat threads with sealant and install new relay valve to tank.
8. Coat threads with sealant and reinstall T-fittings and couplings to
tank.
9. Reinstall air hoses and tighten fittings securely.
10. Pressurize system with air.
11. Check for leaks by coating fittings with a soapy water solution and
inspecting for the presence of bubbles.
4 - 14
