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foggymtnbreakdown

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  1. I think that there are 3 possible causes for this spinning. Cause number one is the bearing. There are many bearings that can be purchased. Just getting any new one will not solve the problem. You need a 6002DDW bearing. It makes no difference who makes it, but the ones that Makita suggests are made by NSK. Repair places will try to sell you a 6002DW bearing. That is not what you want. The DDW suffix indicates a bearing with 2 light contact seals (the green rings on the NSK bearings). If you get a bearing with regular contact seals, it will cause the spinning. The second cause is a worn out brake. This is a strangely shaped plastic/rubber/polymeric "ring" on the Makitas. It is put there to stop the spinning. If it wears out, you will get the spinning. if you take that brake out, the sander will spin like an angle grinder. The brake rubs against the back of the Velcro pad. It is possible that the backside of the pad has worn down. I can't say that I have resolved a spinning palm sander by replacing the pad, but it is possible. If you have an old Makita sander like I do, the paperwork that came with it, shows that they upgraded the bearing to the DDW type because of the lighter grease inside. I believe their reasoning is incorrect. The bearing upgrade tends to stop the spinning problem, but because of the two light contact seals, not because of the grease inside the bearing. I have taken the bearings apart, cleaned them in carb cleaner and degreased them. This did not stop the spinning.
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