TB 5-4220-200-12-1
16. Disc retainer spring
1. Decal
17. Washer
2. Button
18. Lever
3. Retainer ring
19. Spacer
4. Button spring
20. Nut
5. Box top
21. Mouthpiece
6. Rim clamp
22. Mouthpiece clamp
7. Rim clamp screw
23. Strap
8. Diaphragm
24. O-Ring (to first
9. Exhaust tube
stage regulator)
10. Exhaust valve
25. Connector (to second
11. Box bottom
stage regulator)
12. Inlet fitting
26. Hose (with
13. Inlet fitting O-Ring
connectors)
14. Disc (Not replaced
27. Connector (to second
separately, part of
stage regulator)
disc & retainer 15.
28. O-Ring (to second
15. Disc retainer
stage regulator)
Figure 4-2. Second Stage Regulator
4-15
