Question about Dewalt DW824 5" Electric Angle Grinder

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Dewalt dw474 grinder quit

The grinder stopped working abruptly, I checked voltage coming in to switch..120V checked continuity across switch, opens and closes. looked at brushes, is one brush supposed to have a spring loaded contact coming out the bottom where it contacts the armature? the other brush is slightly rounded from contact with armature and appears that the entire brush makes contact. never looked at these when they were not any problems!!!! any ideas? thanks

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You need new brushes. carbon is meant to be touching the armature not the contact from the spring. Its worn down

Posted on May 15, 2009

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I have a dewalt dw818 angle grinder when i press the trigger it starts spinning but if i tilt the grinder a little it stops spinning done the brushes already help please


Check your power cord. Turn the grinder on, then pull and twist the power cord, especially by the boot coming out of the grinder. If there's a break in the line, it's possible for it to work in some positions but it will die if you change the orientation of the cord to the tool.

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110v grinder just stopped what is wrong


could be quite a few tings. Is the power cord cut? If you have a volt/ohms meter I would recommend trouble shooting the tool. First unplug the cord and remove the cover to expose the switch area. Checking the blades on the cord first to their switch connections and then turn the switch on and go across the terminals to the brush leads. Check the condition of the brushes for wear and so forth. It is a process of elimination.

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The most likely cause is the plug fuse. Open the plug and check the fuse for continuity. If there's no continuity replace the fuse. If the fuse is ok check that the wiring hasn't come loose. I hope that solves your problem.

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1 Answer

Dewalt 4 1/2 angle grinder


A Dewalt 4-1/2 inch hand grinder that normally uses 110-120 volts? Probably fried the armature windings.

Check the switch (Out of grinder), and see if it has continuity. (OHMS test with multimeter) Pretty rare thing, but perhaps the switch took the brunt of the overload. If this is the case replace the switch.

(After checking continuity on armature, and field windings, of course. If either one is bad, a new switch won't help)

Which Model Number is it, and perhaps I can find an exploded drawing for you.

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1 Answer

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If its intermittent most likely cause, there is a break in the main power supply cable.  Do a continuity check.

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1 Answer

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Yes, if you have taken the handle halves apart (unplug tool first) check with your meter thru the blades on the cord to the switch contacts and then lock the switch in the on position and check across the switch and then remove the brush caps and brushes and check thru to the brush holders, if at any time you lose continuity then that would be your problem. Let me know if I can help further.

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1 Answer

My admiral dryer LNC7753A71 just stopped working. Turning the timer only produces a clicking noise but all else appears dead. I checked the 240V outlet and its producing 240V and 120V on each side. The...


Your dryer is equipped with a thermal fuse located behind the drum seat on the heating coil.

http://www.applianceaid.com/la-1053.html

There are two white wires connected to the fuse. Pull those off and connect together. Your door light will come on if that is your problem. There might have been a problem that caused the fuse to blow. Check for kinked dryer hoses, dirty lint traps or anything that might have caused it to overheat. You must replace the fuse or you risk catching the dryer on fire.

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