That's the way, but I use two hammers.
Small light one to strike the flush nut, and a lump hammer directly below but to one side of the protruding lower end of the cotter pressed up hard on the pedal body...
Hopefully "new school" will take note and remember....
I don't mind admitting I pay full attention to new school who have info, experience and knowledge on gizmoes like obd stuff and computers.
There is a really good on line book about all Bosch sensors etc..
I will awaken the laptop it's on for those interested, but be patient as this internet phone is basic.
I can load it onto a memory stick and take that to library to send via email....if your interested just let me know....