Question about Makita 1806B 6 - 3/4'' Planer
When the switch turn on there is spark coming from the carbon brush of the motor and sometimes it produces smoke and also the electric motor has no enough power.
You have either one of 2 problems. Either you have a brush that is hung up and burnt or the armature is bad. If you are comfortable in removing the brushes first unplug the tool and remove the brush caps. Pull brushes out and look at the spring making sure not collapsed and then the end of brush that rides on armature for a burning look. Then I would look into brush tube and try and turn by hand the roller to look at the segments of armature best you can. If this needs anything other than brushes I would take it to a repair shop. Good luck
Posted on Dec 28, 2008
First to do is inspect the motorhous before invest in parts because the armature must run exactly in the middle beteen the coils in the middle of the electric field but if there is a bad /worn bearing that was full of dust then the armature is run slowly by time getting hotter and hotter because of the dirt thats slowly running in the bearings in the years of use, remove the belt and feel first you can turn the armature without to much resistance feel the pulley on the chisel holder to control also all the other bearings they can be cleaned or replaced , look allways that every bearing is still quite by removing the seal with a sharp knife to look if its bushing is not worn then solvent clean it make dry and re-greasing it may also be good for lubricating to squirt If the rpm of the armature is not high and gives sparks, clean the commutator or clean collector has in 80% of this kind tools barely no use replace both the electric field as well as the armature and if the motor housing on the bearing seat has no melting damage otherwise it could be inbetween possible, that the investment become to be large compared to perhaps the age of the device and delivery of parts. but clean out all the dirt before repair for better longlasting your tool.
Posted on Dec 31, 2016
David's answer is spot on, although I'd bet a fair sized chunk of cash that the problem will turn out to be the armature instead of brushes. After 45 years of being in this repair business I could count on one hand the number of times that I've been able to replace the brushes, dress the armature and call it good. These things almost always turn out to be the armature, at a minimum, usually I recommend using new brushes to run in the new armature. This is a very important part of any repair that involves armature replacement, and that's the run in. The unit getting the new armature should be run at about half speed for 2 - 3 hours before cranking up to full power. This allows the new brushes to form full contact with the armature. Once that's done the unit should be good to go.
Posted on Nov 30, 2014
I would first attempt to swap out the brushes. A thumbs up would be greatly appreciated if answer is helpful for your question. THANK you and GOD BLESS
Posted on Nov 22, 2014
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Posted on Jan 02, 2017
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