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My grinder makita 9017,what was procedure before changing aremature? My aremature new ,what is further check up on capacitors?
For every machine if it is not working begin measure on the power cable if its not defect measure the carbon brushes to each other over the commutator of the armature (maybe only the auto-stop inside the brushes is activated ) when the brushes become to short there comes a little spring from inside the brush out to protect. measure the 2 or 4 electric field contacts to measure the 2 coils if that's good then measure the switch the capacitors ? no that is only on some machines called feedthrough capacitors like the brand FLEX has on its grinders , but Makita have i not seen in 20 years the capacitors in machines with brushes ( not induction motors) for only radio interference suppression you can without problems remove them it has nothing to do in function. switch and electronic can be defect this model 9017 is not common in my country but every machine has the same principle.
2/6/2016 10:52:28 AM •
on Feb 06, 2016
I have a makita BSS 610 cordless saw that has stopped working I've taken it apart and the armature winding all looks fine I've changed the brushes and it still won't work! Please help??
VERY IMPORTANT to tell you MAKITA HAS MODIFICATED the switch assembly and battery connector !!!!! of this device .
If you have a saw with the 2 contacts in the connectorplate then the problem of an to early defect battery is possible by missing of a thirt protect connector to protect a to deep discharged battery .
The new switch assembly has 3 contacts a - and a + and the very important Low Voltage Disconnect contact that should shut off in one time the machine it looks like its defect but its not !! thats the protection and then only take the battery in the charger .
Because there must be a little dc in the battery left for the charger accept, if the battery is to low the charger will not accept the battery anymore then you will have to take the battery to someone with a special cadex charger to boost the dc again in or go to a special makita service , hold as much as possible the batteries on the charger to last the battery life. the best is if you have no protected 3 contacts connector to build it over Makita has moost of the time a little ridge on one side of the battery connector (marketing technical) because of the modification on the new connectorplate so it wont fit in the old housing hihihiiii but i
I just cut it off with pliers and file it smooth, its easy so I can just use the old machine housing again you need for modification IF YOU NEED ?? or you have the new 3 contacts machine already and don,t know before of the stop function by lowered battery. but otherwise you need a new switch and connector both.
2/5/2016 9:58:26 AM •
on Feb 05, 2016
What would cause a table saw to just stop working?
Sound like the motor finally went to motor heaven. If you have an ohm meter do a continuity test of the motor. Should be a low ohm reading. If high or infinity, fogit it.
One last thought! - check the motor brushes !!!!!!!!!!!!! If no contact with commutator the motor will not not be energized.
1/2/2016 3:23:55 AM •
on Jan 02, 2016
My makita 4.5"angle grinder produces alot of sparks at the brushes.what could be wrong?
lots of sparks means your brushes are used up, broken or stuck. Replace them. If that is not the problem, it could be you over heated the motor, very difficult to do, and the motor is about to die. Check brushes first. You can tell by examining your graphite brushes. Use a straight screw driver and unscrew the black cap that holds the brushes in place.
2/17/2015 7:30:13 PM •
on Feb 17, 2015
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