Maintenance
Repair Self-sealing Couplings
AVOID INJURY. Always vent a gas charged component before beginning to
disassemble its couplings. Gas pressure can launch a loose coupling with
enough force to cause personal injury.
PRESERVE YOUR WARRANTY. Modification to equipment without the consent
of the manufacturer will void the warranty.
Damaged threads, leaking seals or a leaking valve assembly may require replacement of
coupling parts or replacement of the complete coupling half.
Replace the Gasket Seal
Tool required: Needle or a narrow, flat blade screwdriver
Cotton swabs
Isopropyl alcohol
From repeated connecting and disconnecting the coupling, the gasket face seal just inside the
face of a male coupling may begin to leak and require replacement. The gasket seal is replaced
while the gas line is disconnected.
1. Carefully pierce or pry the old gasket face seal and pull it from its recessed ring in the body
of the coupling. Discard the face seal. See Figure 6.
2. Using isopropyl alcohol on a clean, cotton swab, carefully remove any remaining adhesive
from the coupling’s recess. Avoid getting alcohol on the face of the poppet.
3. Dry the recessed surface with a clean, lint free cloth.
4. Do not apply any adhesive. Press a new gasket seal into the recessed ring.
Figure 6 Aeroquip Male Coupling Parts
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