Carbon Brush 939539-00
- Manufactured by:
- DeWALT
- ERP Number:
- ERP10185921
- Part Number:
- 939539-00
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Product Description
?Genuine Dewalt replacement part This brush is sold individually, 2 are needed for the tools shown below It is always best to replace both brushes, even if only one is worn. Worn brushes frequently are the cause behind a motor running poorly. Replacing brushes can fix a motor that's operating intermittently. New brushes can restore a motor's electric braking. Carbon brushes are one of the most commonly replaced power tool parts. This is because carbon brushes are wear items, meaning that through friction and use they will gradually wear away until they need replacing. Worn brushes are a common causes of intermittent motor function, reduced electric braking and reduced motor power. A worn-out brush will often be worn down near to the wire lead and can be cracked, pitted, or burned. When replacing carbon brushes, be sure to inspect your armature for burns, cracks, or other damage which can indicate larger motor problems.
Frequently Purchased Together
?Troubleshooting
- DeWALT
- DeVilbiss
- Black and Decker
- Craftsman
- Angle Grinder
- Grinder
Videos For installing this part.
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Customer Part Reviews
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Customer Repair Instructions
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
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Motor stopped running: brushes were worn down and lost commutator contact
Ian from Aiea, Hawaii
- Difficulty Level:
- Easy
- Total Repair Time:
- 15 - 30 mins
- Tools:
- Screw drivers
- Parts Used:
- 939539-00
2. Separated housing and removed armature.
3. Used 600 grit sand paper to clean commutator contacts.
4. Removed old brushes and slid new brushes in brush holders.
5. Used compressed air and blew out any debris.
6. Applied some wheel bearing grease to the gearing.
7. Reassemble ... Read more d.
Tool was Craftsman 4 1/2\" angle grinder 16 years old.
on-off slide switch woul not stay latched, had to be held on at all times
PETER from LYONS, New York
- Difficulty Level:
- A Bit Difficult
- Total Repair Time:
- 30 - 60 mins
- Tools:
- Screw drivers
Brushes were pretty worn out.
Carol from Flagstaff, Arizona
- Difficulty Level:
- Easy
- Total Repair Time:
- Less than 15 mins
- Tools:
- Screw drivers
- Parts Used:
- 939539-00
Would not run
Gary from Columbus, Mississippi
- Difficulty Level:
- Easy
- Total Repair Time:
- Less than 15 mins
- Tools:
- Screw drivers
- Parts Used:
- 939539-00, 611672-00, 606574-01SV, 397616-00
Disconnect the brushes and holders
Remove the old brush holders
Install the new brush holders
Pull back brush holder spring and insert the new brushes and connect them
Place inner and out flanges on the spindle
Install the end cap
Would not run.
jeffrey from Skagway, Alaska
- Difficulty Level:
- Easy
- Total Repair Time:
- Less than 15 mins
- Tools:
- Pliers, Screw drivers
2. remove switch, disconnect wires with pliers.
3. connect wires to new switch, replace in holder.
4. lift spring holder off brush, remove, disconnect wire.
5. attach wire of new brush, insert into holder, replace spring.
6. repeat #4&5 with second brush.
7. repl ... Read more ace back cover.
Brushes worn out
Robin from NEW ULM, Minnesota
- Difficulty Level:
- Easy
- Total Repair Time:
- 15 - 30 mins
- Tools:
- Pliers, Screw drivers
- Parts Used:
- 939539-00
Brush holders was bad and, brushes was worn out.
glenn from berkeley springs, West Virginia
- Difficulty Level:
- Easy
- Total Repair Time:
- 15 - 30 mins
- Tools:
- Pliers, Screw drivers
- Parts Used:
- 939539-00, 606574-01SV
Work safe AND unplug the tool..
Worn out brushes, weak springs
Ignacio from Stevenson Ranch, California
- Difficulty Level:
- Easy
- Total Repair Time:
- Less than 15 mins
- Tools:
- Pliers, Screw drivers
- Parts Used:
- 939539-00, 606574-01SV, 562204-00
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Model Cross Reference
Manufacturer Part Number: 939539-00
| Brand | Model Number | Description |
|---|---|---|
| Craftsman | 24544SE | Grinder - Sears Craftsman 4-1/2 In |
| Black and Decker | 26436 | Angle Grinder - 4-1/2 Small Angle Grinder |
| Black and Decker | 26437 | Angle Grinder - 4-1/2 Small Angle Grinder |
| Black and Decker | 26437OS | Angle Grinder - 4-1/2 Angle Grinder |
| DeWALT | 26742 | Angle Grinder - Angle Grinder |
| Black and Decker | 27326 | Angle Grinder - 4-1/2 Small Angle Grinder |
| Black and Decker | 27327 | Angle Grinder - 4-1/2 Small Angle Grinder |
| Black and Decker | 27703 | Angle Grinder - 4-1/2 Right Angle Grinder |
| Black and Decker | 27742 | Angle Grinder - 4-1/2 Right Angle Grinder |
| Black and Decker | 27743 | Angle Grinder - 4-1/2 Right Angle Grinder |
| Craftsman | 900245440 | Angle Grinder - Angle Grinder |
| Craftsman | 900264370 | Angle Grinder - Grinder |
| Craftsman | 900277031 | Angle Grinder - Grinder |
| Craftsman | 900277420 | Angle Grinder - Grinder |
| Craftsman | 900277421 | Angle Grinder - Grinder |
| Craftsman | 900277422 | Angle Grinder - Grinder |
| Craftsman | 900277431 | Angle Grinder - Grinder |
| DeWALT | D28090-B3 | Grinder - 4-1/2 Small Angle Grinder |
| DeWALT | D28090-BR | Grinder - 4-1/2 Small Angle Grinder |
| DeWALT | D28090AV-B3 | Grinder - 4-1/2 Small Angle Grinder |
| DeWALT | DW406 | Angle Grinder - Angle Grinder |
| DeWALT | DW818 | Angle Grinder - Angle Grinder |
| DeWALT | DW818-B3 | Grinder - Slider Sag |
| DeWALT | DW818-BR | Grinder - 115mm Grinder |
| DeWALT | DW821 | Angle Grinder - Angle Grinder |
| DeWALT | DWE4010-B3 | Grinder - 700w Small Angle Grinder |
| DeWALT | DWE4010-BR | Grinder - 700w Small Angle Grinder |
Some of the parts we sell are eligible for mail-in rebates since we can recycle them. We will display any applicable rebates in your shopping cart. To redeem your rebate, contact Customer Service after you have received your part.