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Powered makita sharpener troubleshooting. - Doug Ayen's Blacksmithing Blog [entries|archive|friends|userinfo]
Doug Ayen

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Powered makita sharpener troubleshooting. [May. 31st, 2014|06:01 pm]
Doug Ayen

Anyone know motors? My Makita sharpener has a custom 560rpm 1.1 amp motor, which usually has plenty of torque, but suddenly the speed and torque dropped to the point where it can't do the job anymore, and the motor housing gets very hot. Pic attached of the insides. I'd like to fix it if possible, but replacement motors aren't available, assuming it's not that great honking capacitor, which is available, but I don't know where to even start troubleshooting. I suppose I could buy a replacement unit, I've had this one since 1998, and it's seen many hours of use, but I'd like to avoid the expense if possible. Any advice before I blow the tool budget again?

sharpener-motor2
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Comments:
[User Picture]From: blackanvil
2014-06-01 05:01 am (UTC)
I don't see a brush port, though some disassembly may be required. What would I look for for a dirty commutator?
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[User Picture]From: perspicuity
2014-06-02 03:01 am (UTC)
i just fixed my electric leaf blower, the brushes got stuck in their channels, wore, and the spring was not strong enough, jiggle jiggle wiggle wiggle... works!

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