I am waiting for a call back from Hobart Service…figured I would post here to see if anyone has a quick-fix suggestion. Could I just weld the pin in the hub so that it will not slide through and it will hold the spiral arm attachment?
Google you model of mixer and manual and you should be able to find manual with a cutaway veiw and parts list. I believe somebody even posted a link here a while back. If I remember correctly there is a bolt at the bottom of the shaft, remove that bolt and there is a set screw that locks the pin in place. I don’t recall if there is one or two set screws so find a pic and check it out. I don’t have internet conn now other than cell phone cause I am in a cabin in mountains of NC on a well deserved vacation. Maybe George can get you a pic
I stand to be corrected, but I think the pin is a press fit. This means that the pin diameter is slightly larger than the hole diameter, the pin is then chilled (packed in dry ice) which causes it to contract/shrink slightly, the pin is then pressed into the hole in the shaft. As the pin warms, it expands to make a very tight fit. A little locking compound might also be used. When you have the new pin installed, bring your attachments along with you when you pick it up, that way you can test them for fit and make any adjustments if necessary before getting back to your shop.
Tom Lehmann/The Dough Doctor