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Old 02-14-2008, 08:36 AM   #1 (permalink)
 

Join Date: Jan 2008
Default Help! How to remove bearings in mixing arms??

Mine have developed some play in them, so I want to replace them.

I've tried everything in the book to get them out, and I have no idea whether it's the Loctite Hirobo uses or if the tolerances are so tight, or if I'm doing something wrong... they refuse to budge even a tiny bit...

Tried heating up the whole arm - nothing
Heated up the bearing with a soldering iron stuck in the hole - nothing
Attempted to slide an Xacto underneath the flange - nothing

I hope Hirobo doesn't expect us to replace the entire arm when just the bearing wears out... I don't want to damage the anodizing any more

Thanks in advance!
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Old 02-14-2008, 10:35 AM   #2 (permalink)
 

Join Date: Jan 2005
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Sound like you are going about it a little odd..
Remember the arms are Aluminum, the bearings are steel, AL expands faster than the steel, so in that vien, you might try placing the whole shebang in the freezer for a half-hour or so to contract everything, then using your iron, butane torch, heat-gun or oven, heat ONLY the Aluminum arm. It should expand enough to free up and release the locktite from the still cold and contracted bearings.
Keep in mind that you do not have to apply a LOT of heat, and only for a long enough time to cause the AL to get hot (200 F or so)
BTW: If you've oxidized the anodizing, you may want to replace the arms anyway, or at least spray with clear laquer to re-seal...
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