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The sander pad only vibrating not spinning. Replaced brake ring no change The motor is spinning very fast, but the sanding pad is not spinning. The sander pad can easily be spinned manually. I dont know where is the connection between the motor and the sanding pad Parts spinning: #30 inner bearing ring, #33 washer, #34 screw see attached drawings Parts NOT spinning: , #29 outer Bearing Box , #32 Bearing Box Cover, #35 sander pad and #36 bolt,when assembled these are “sanding assembly” this assembly can be spinned manually but is not spinned by the motor see attached drawings
Hi @speculant Check if the motor brushes are OK and not worn out. These connect the power to the motor causing it to turn. Also ensure that the motor spindle turns freely when manually operated and is not jammed. Here’s the service manual for the sander, that may help. Here’s a link to a parts supplier that may also help. For example if the brushes need to be replaced see Item #8 in the parts list to find the Makita part # i.e. CARBON BRUSH CB-64 BO3710/11 . Given that it is a variable speed sander, it may also be that the controller not supplying enough power to the motor to turn (part #37 CONTROLLER 240V BO5041) Search online using the information from the linked parts supplier list, to find suppliers that suit you best. Hopefully this is of some help.
