Question about Dewalt Dw938 18v Reciprocating Saw Sawzall Recip 18 Xrp

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DW938 reciprocating saw only works if turned on right side and not at all if turned on left side. Motor appears to be arcing if and when it works. Moderately used and never dropped or wet.

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There are a set of contacts or brushes that are spring loaded and press against the motor shaft one from each side, when you lay it on the side that works the brush with the broken spring is on the top and gravity lets it fall in place so it will work, but the arch is because the spring is not there to hold the correct pressure on it. Check the instruction or your local tool shop for the brushes and instructions on how to replace. Easy fix and no need to replace the tool.

Posted on May 18, 2011

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1 Answer

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could be quite a few things but it is obviously a loose connection in the electrical system, I would suggest going to dewaltservicenet.com and downloading a parts schematic before removing anything. I am thinking the battery or switch but try another battery first and look at the contacts for dirt or arcing. Let me know if you need more assistnace.

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1 Answer

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As long as the voltage of the battery is the same as the tool, the tool won't mind if the power is coming from a NiCd or lithium battery. You do have to have a charger that works with lithium batteries to charge them up. Chargers that can charge lithium batteries can also charge NiCd and NMH batteies. NiCd chargers are not always programmed to detect when lithium batteries are full and may continue to charge them to the point of melting or starting on fire.

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1 Answer

I have a DW938 and I cannot get the blade to lock into place seems like there is no lock at all.


Hi, If you look at the end where the blade goes in, on the right hand side (as holding it for use in your hands) you should see a yellow lever. First take out the battery, each and every time you change the blade. Lift up the lever, wear some gloves to protect your hand and pull the plade straight out. Push in the new blade with the teeth pointing down, and push the yellow lever down. You can replace the battery once you have completed the above. Hope that was of help to you.

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Can I use a 18 volt XRP battery in the DeWalt DW938 Reciprocating saw?


Yes. Dewalt says the 18volt XRP battery is compatible with all Dewalt 18volt tools

Have a great day.

Dec 29, 2010 | Dewalt Dw938 18v Reciprocating Saw Sawzall...

1 Answer

How to connect correctly the wires on the switch


One of the terminals should be labeled M2. That one gets the red lead.

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