Heidelberg windmill grippers

Does anyone know how to remove the top of the propeller with grippers? I made a rather big effort with a puller, but I couldn’t take it off. What kind of connection is there? I will be grateful for the help!

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It’s a tricky thing to remove. It has conical shape and is sitting very tight. If You’re in Kyiv - send me Your contact via private message and I can help You with pulling it off since we did this two years ago.
Why do You want to remove it? Maybe the problem is not in this place.

MaMaDx,I wrote to you in PM.