Disassembly/Reassembly Procedures: Ensuring Radio Immersibility 5-37
5.8.10 Troubleshooting Charts
Troubleshooting Flow Chart for Vacuum Test (Sheet 1 of 2)
Start
1. Remove Battery
2. Remove Universal
Connector Dustcover
3. Remove breathing vent label
and membrane
1. Attach antenna firmly to the radio.
2. Attach vacuum hose to vacuum
pump
3. Ensure fitting seal is attached to
hose-to-chassis pump connector
4. Screw pump connector into chas-
sis’s tapped hole
5. Attach vacuum hose to pump
connector
6. Place radio on flat surface
7. Operate pump (gauge = 6 in. Hg)
Gauge
does not fall
below
0.5 in. Hg
NO
YES
Run Pressure Test
1.Replace Breath-
ing Vent label and
Breathing Vent
Membrane
2. Radio approved
for immersibility
Full
equipment for
pressure test
procedure
available
YES
NO
B
End
A
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