Sec 2: 8-38 Disassembly/Reassembly Procedures: Ensuring Radio Submergibility
8.10.9 Troubleshooting Leak Areas
Before repairing any leak, first read all of the steps within the applicable section. This will help to
eliminate unnecessary disassembly and reassembly of a radio with multiple leaks. Troubleshoot only
the faulty seal areas listed in “8.10.8: Pressure Test (using NTN4265_)” on page 2:8-36 and, when
multiple leaks exist, in the order listed.
NOTES:All disassembly and reassembly methods can be found in Section 8.7. and Section 8.9.
If in the field, water is found around the battery leads, the O-ring on the Battery should be
inspected and replaced if needed.
8.10.9.1 Seal Interfaces
• If leak occurs at one or more of the seal interfaces, disassembly of the component(s) and
inspection of the interfaces to determine if there is any damage. If no damage is observed,
re-assemble the radio as directed.
• If damage has occurred, replacement parts will be needed.
8.10.9.2 Speaker Module
• If leak occurs through the Microphone Membrane (19) or the Port Seal (20), replace these
items.
• If leak occurs elsewhere on the Speaker Module (B), the module will need to be replaced.
8.10.9.3 Battery Contact Seal
• If leak occurs due to damage to the Battery Connector Seal (35), it will need to be replaced.
8.10.9.4 Back Chassis
• If leak occurs elsewhere on the Back Chassis (E), it will need to be replaced.
8.10.9.5 Control Top
• If leak occurs through the antenna or the Control Top Seal (14), replace it.
• If leak occurs elsewhere on the Control Top Assembly (J), it will need to be replaced.
8.10.9.6 Main Chassis
• If leak occurs on the Back Chassis (E), it will need to be replaced.
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