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Carbon Brush With Lead

Part Number: 398139-01
DeWALT
Availability: 25+ in stock
Price: $7.78
Ships within 1 business day

*This part replaces obsolete part #: and 398139-00.

Product Information
Manufacturer: DeWALT
Product Number: 398139-01
Classification: Part
Weight: 0.01 lbs.
Shipping: Ships Worldwide
Description:
Genuine DeWalt replacement part
rnIncludes 1 Carbon Brush with wire lead in rubber sheath attached.rn

• Worn brushes are often the cause of a poorly running motor
• Replacing brushes can fix an intermittent motor
• New brushes can restore a motor’s electric braking


Carbon motor brushes are one of the most commonly replaced power tool components.  Because carbon brushes are wear items, meaning that through friction and use they will gradually wear away, they will eventually require replacement.  Worn brushes are common causes of intermittent motor function, reduced electric braking, and reduced motor power.  A worn out brush will often be worn down near the wire lead and may be cracked, pitted, or burned.  When replacing carbon brushes, be sure to also inspect your armature for burns, cracks, or other damage which indicates a larger motor problem.

Products Compatibility

This item works with the following types of products:

  • • Router
Questions & Answers

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Repair Instructions: Submitted by Customers Like You
1 of 1 people found this instruction helpful
Tool Type:
Router
Parts Used:
Carbon Brush With Lead - 398139-01
Magnet Ring - N618274
Repair Difficulty:
Medium
Time Spent Repairing:
30-60 minutes
Tools Used:
Screwdriver, Pliers, Power Drill, bearing puller
Arcing on commutator after use at high speed for several hours
Remove plastic housing for electric motor
Remove broken (in pieces) magnetic ring
Inspect commutator
Remove top shaft bearing with bearing/wheel puller
Remove chipped brushes
Sand commutator with silicon carbide sand paper (insert narrow strip of sc sand paper around commutator hold tight against commutator and manually revolve commutator to polish commutator sections)
Replace with new brushes
Replace magnetic ring
Re seat top bearing using drill press as press
Replace plastic housing for motor

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Tool Type:
Router
Parts Used:
Carbon Brush With Lead - 398139-01
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Screwdriver
Router stopped running
Replaced the brushes... Runs great now!
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Tool Type:
Router
Parts Used:
Carbon Brush With Lead - 398139-01
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Screwdriver
brushes worn out
removed cover, replaced worn brushes with new, replaced cover.
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Tool Type:
Router
Parts Used:
Cord Set - 399063-02
Carbon Brush With Lead - 398139-01
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Screwdriver, Power Drill, Thin finish nail
Worn cord and arcing from brushes
Watched you tube video.
Removed router cover
Removed and replaced brushes
Replaced cover
Plugged in New cord
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Tool Type:
Router
Parts Used:
Carbon Brush With Lead - 398139-01
Repair Difficulty:
Medium
Time Spent Repairing:
More than 2 hours
Tools Used:
Screwdriver
It wasn't the brushes.
1. Removed and replaced brushes, which took over a week due to shipping.
2. Router started right up and worked for approximately 30 seconds.
3. Got fed up and purchased new router.
4. Tried power cord from new router. Issue solved.
5. Ordered new cord for old router.
6. Still waiting for new cord to ship.
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Tool Type:
Router
Parts Used:
Ball Bearing - 146555-01
Carbon Brush With Lead - 398139-01
Repair Difficulty:
Hard
Time Spent Repairing:
1-2 hours
Tools Used:
Screwdriver, Pliers, Adjustable Wrench, Mallet, star drive bit set
Main bearing seized and motor brushes were in poor shape
For brushes, remove top housing, pulled back on spring clip, removed old brush and inserted new one.

The bearing was much tougher.
Unscrewed plate holding the shaft lock pin (watch that spring behind the button, it can get away from you!).
Unscrewed the large nut on the shaft over the bearing.
Getting the bearing out is the tough bit and I am not sure I have the best method, but I "tapped" on the collet end of the shaft until the bearing was clear of the shaft. It was frozen completely.
I put the new bearing on the shaft and "tapped" it down until there was virtually no up and down on the shaft. Test that the shaft turns freely and that the brushes are aligned on the commutator.
I then put the large nut back on and assembled the shaft lock pin and spring and screwed that plate back on the end of the router. Check that the lock pin will engage and disengage. If it does not, the bearing may not be completely seated.
Reattach the the rear housing over the electricals and test that the router works.
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Tool Type:
Router
Parts Used:
Carbon Brush With Lead - 398139-01
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Screwdriver, Pliers
Uneven start, excessive sparking
1. Unscrew 4 screws on top of router,
2. Remove old brush (there are two, pliers optional but helpful),
3. Insert new brush (pliers helpful in holding back spring which pushes it into place until the new one is in),
4. Reattach top.

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1 of 2 people found this instruction helpful
Tool Type:
Router
Parts Used:
Carbon Brush With Lead - 398139-01
Magnet Ring - N618274
Repair Difficulty:
Medium
Time Spent Repairing:
30-60 minutes
Tools Used:
Screwdriver, Bearing puller
Magnet broke which broke brush
Removed bearing replaced magnet and brush. Replaced parts with the new ones and reassembled.
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Reviews
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Average Rating (out of 5):
2 Reviews
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  • Easy repair
    Parts arrived as expected, installed parts on Dewalt router and worked it like new.
    Jeff - September 2, 2019 Verified Purchase
    Great
    Very pleased with purchase
    Jeff - August 10, 2019 Verified Purchase
    Verified Purchase
    eReplacementParts Team
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    Product Information
    Manufacturer: DeWALT
    Product Number: 398139-01
    Classification: Part
    Weight: 0.01 lbs.
    Shipping: Ships Worldwide
    Repair Guides
    Watch the Repair Video for Carbon Brush With Lead
    Articles:
    Step-by-step instructions for removing and installing the motor brushes on your DeWALT router....
    December 11, 2017
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