How to take apart a chain coupler

This is off topic, but maybe someone can help.
Does anyone know how to take apart a chain coupler? Mine is on a Bobcat skidloader model 610. I can not find anything on the web except a picture at: Look at the pciture in this PDF file and search for the words "motor chain coupler half". (page 10) There is a picture on page 9.
Anyone know how to dismantle these?
Thanks Alvin
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