4-8. Introduction - continued.
b. This manual cannot list all malfunctions that may occur, nor all tests or inspections and corrective
actions. lf a malfunction is not listed or is not corrected by the listed corrective actions, notify your supervisor.
Refer to table 4-2 for organizational maintenance troubleshooting.
Tale 4-2. Organizational Maintenance Troubleshooting
TEST OR INSPECTION
1. WATER LEAKAGE INTO HELMET
Check for damaged or improperly seated exhaust valve.
Seat or replace valve (para 4-21).
Check for damage or improperly seated regulator diaphragm.
Seat or replace diaphragm (para 4-15).
Check for torn neck dam or improperly adjusted neck clamp.
Replace neck dam or adjust neck clamp (para 4-12).
Check for loose port retainer screws.
Tighten screws (para 4-18).
2. DEMAND REGULATOR CONTINUOUSLY FREE FLOWS
Check for too high air supply pressure.
Adjust supply pressure lower than 200 psi over ambient.
Check for regulator out of adjustment.
Adjust regulator (para 4-15).
If free flow occurs only under water, check for turned down or torn neck dam.
Adjust or replace neck dam (para 4-12).