Guide :Saws : D28494N 7" and larger Electric angle grinders

Grinder problems Hi i have a d28494 6000rpm dewalt grinder. it will not do anything when i plug it in. if you could give me any advice that would be great thanks Dusty

Posted by mayfield_1d on Dec 09, 2008

Research, Knowledge and Information :

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... Careful with those grinders, guys ... back on I used his grinder that did not have a ... is not bolted down to anything. I haven't had any problems, ...
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Suggested Questions And Answer :

Grinder problems Hi i have a d28494 6000rpm dewalt grinder. it will not do anything when i plug it in. if you could give me any advice that would be great thanks Dusty

HiCheck the power suply cord, the switch ONN/OFF ;the brushes and the electric engine(field and armature). best regards savumihai71
Read More At : D28494N 7" and larger Electric angle grinders...

Bosch angle grinder acts like its burnt out but motor resistance values suggest not

Hi Brian, running your angle grinder on reduced voltage (through overloading the petrol generator) will have caused the current in the grinder to be higher than it should be. This may not be what you expect, but it is a characteristic of rotating machines, they behave differently to resistive machines such as heating elements. You have not indicated how you come to the conclusion that the windings test OK. If you have just checked with an ohm-meter and see a continuity reading, this does not eliminate the possibility that the overheating resulting from over-current has broken down the insulation (evidenced by the smell and sparks) and you have short circuited windings. The grinder will run without a suppression capacitor, it is just there to minimise interference with you neighbour's (or your wife/girlfriend/daughter's :) ) radio. Replacing the capacitor will not restore your grinder, I reckon you have killed it, in spite of the fact that running it on a healthy supply was to quickest way to cool it effectively.
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I have an older Black and Decker "Heavy Duty" 4 1/2" angle grinder (CAT 4246-09 Typ 1 SER 74136). I got it second hand and am not sure if you can help me because of that, but I have NO idea how to loosen the disc in order to replace it. I have had a couple of people look at it and they were stumped also. I would assume that there would be a button or a lever that would jam the disc to allow me to loosen the bolt/nut. I have a wrench that fits the rotating bolt below the disc, but like I mentioned, I have no clue how to prevent the disc from rotating while I loosen that bolt. Any help would be great. Thanks!

Give it a tip off a hammer and chicel will loosen it beter hit the spanner
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Bosch angle grinder

Replace capacitor, Yes it would give those symptoms
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Angle grinder eats carbon brushes

Yes, the rock dust is what's destroying your brushes and armatures. It gets sucked into the rear vent slots and gets to those parts and eats them away quickly. I don't know of any vacuum systems make by Makita but there are some companies that make them for their systems. Blastrac is one that comes to mind but they can be real expensive systems. I don't know of any grinders with sealed brush/armature systems, they have too much heat to disipate. To make your Makita grinders last longer make sure you are cutting with the side of the blade that directs the dust away from the case and try to have a strong airflow blowing the dust away from the grinder to minimize the dust taken in at the back of the grinder.
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DeWalt grinder won't turn on

Check the carbon
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My makita 2703 blade movement quirks

Http:// Here are two links for the parts manual and the owners manual. It is not uncommon for a tool to go slightly out of line with use due to vibration and and movement of the arbor. As for the tool not tilting, it just sounds like the worm screw and gear are off line. this is a pretty quick fix but it requires you to turn your saw upside down to access the set screws. I glanced at the diagram and it looks like the handle for the adjustment is held on by a set pin. you will also be able to access this from inside the cabinet.
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Electricity trip whenever i on my makita grinder

Check what's shorting to ground. remove the brushes and use a meter to "ring" out the motor circuit. maybe somebody sliced through the cord.
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