Raymarine Realvision RV-220P Installation Instructions Manual page 18

The tool widens the gap in the split ring, enabling the split ring to be pushed further back onto
the connector in the following step.
Important: Always use the supplied tool when attaching the split ring. The split ring may become
overstretched and break if you try to attach it without using the tool.
4. Use the tool to gently lever the split ring over the moulding on the connector until it snaps into
position approximately 0.5 cm further back towards the cable-end of the connector.
You can now remove the tool. The split-ring stays in position on the connector, but rotates freely.
5. Slide the O-ring over the end of the connector, and ensure that it is seated squarely against the
connector moulding, adjacent to the split-ring.
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