Schritt 3 übersetzen
Once the casing has been split/cut apart, you should be able to pull off the section on the connector side.
The white rubber seal/gasket will probably come off, but this can be quite easily pushed back into place if needed.
The section of casing on the cable side is harder to remove. Use the tip of the utility knife, or better still, a scalpel, to cut and pry it away from the main body.