Question about Dewalt 1/2 Drill DW236

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Dewalt 236 overheated & stopped working. Do I replace the brushes, or the switch.....or....?

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SOURCE: Dewalt dw130v brush replacement

You have to remove the black cap on the back of the tool (item 4) and I believe you may also have to remove the back part of the switch handle (item 3). Here is a parts diagram so you can see where the brushes are located.

DeWalt DW130V diagram

Posted on Aug 26, 2012


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Have a dewalt dw708-lx type3 just replaced the on/off switch as the previous failed(13yr old)did two cuts this morning and new switch has now failed

Curious if you have tested the switch to make sure it is the problem? Also, have you checked the armature & brushes (make sure the brushes move freely in the brush tubes and squarely contact the armature)?
The DW708 is prone to bearing issues and the field is not uncommon either.

It would be unlikely to have a new switch fail that soon unless there is another issue causing it.

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1 Answer

I replaced switch and still doesn't work

Check your cord & insure you have continuity to & through the switch first.
Second, check the brushes - make sure they are not worn down & that they slide easily down the brush tube to contact the armature. I have had a few of these with bad field windings - the winding breaks off right at the field connector (you will need a meter to test this)

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I have a Dewalt 625e type 2 router which just quit working. I replaced the switch and the PC board but it still doesn't run.

Check both brushes. Some DeWalt brushes have a spring loaded plastic pin built into them so when it wears down the pin pops out and prevents damage to the armature. Other brushes have a copper wire that, when the brush wears to a certan point, it will no longer touch the armature again preventing damage to the armature.

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1 Answer

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Put a meter on the two wires that come from the switch to the brush holders, if there is no voltage then it is the switch. If there is voltage then make sure the new brushes are not stuck in their holders.

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1 Answer

Dewalt 18vxrp stopped working. Any suggestions???

Knock the back end against something. Or shake the drill and if it sputters, it could be a loose wire, or more likely worn brushes. If that doesn't do anything, open the case and check with a volt meter if you are getting any current past the switch (ie hold the terminals from the volt meter onto the brushes or onto the leads coming out of the top of the switch.)

If you get a reading of 19V to a couple volts less, then you're switch is most likely okay. Check for worn brushes. Or a motor replacement might be necessary. (Yes it's easy to do)

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My grinder d28110 dewalt stop working. My friend told me that it may be the problem with brush. I opened the machine but I do not now where is the brush and how to replace it. Please help, Bozena

Most times , unless the unit has been used a big bunch, it's not the brushes it's the comentator that the brushes run on . spin it in the clockwise position while holding some crocus cloth to clean it. Remember to clean each groove as a piece of metal could short two copper pads and burn a wire and cause a dead spot. This can make act like a bad switch.

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Dewalt DW433 belt sander stop working, why? While sanding shutters, my sander just stopped. Any fixes?

Check the brushes for the motor they may have gone bad or broken, I have seen this happen before on dewalt tools.

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1 Answer

Stopped working might have overheated it does nothing now

have you checked the fuse first.
possibly worn brushes on the motor, remove the brushes and check the length of them , also look to see if they are pitted or burned.

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