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  398139-01 Carbon Brush With Lead

Carbon Brush With Lead 398139-01

OEM part for: DeWALT

Part Number: 398139-01


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Grid squares measure 1x1 inch
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Minimum Quantity of 2 Required

Medium 15-30 minutes (8 rated repairs)?
OEM: Original Equipment Manufacturer ?
DeWALT

Product 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.

  • Classification: Part
  • Weight: 0.01 lbs.
  • Shipping: Ships Worldwide

Compatibility

This is the official OEM part for the following brands:

  • DeWALT

This item works with the following types of products:

  • Router

This part replaces obsolete part #: 398139-00

Repair Videos ?

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

Customer Part 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

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    Questions & Answers for Carbon Brush With Lead


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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.

    Medium 15-30 minutes (8 rated repairs)?

    Arcing on commutator after use at high speed for several hours

    bob - May 26, 2016
    👍 1 of 1 people found this instruction helpful
    Tool Type

    Router

    Difficulty

    Medium

    Time

    30-60 minutes

    Tools Used

    Screwdriver, Pliers, Power Drill, bearing puller

    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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    Thanks for voting and helping fellow customers!

    Router stopped running

    Brandt - May 20, 2020
    Tool Type

    Router

    Difficulty

    Easy

    Time

    Less than 15 minutes

    Tools Used

    Screwdriver

    Replaced the brushes... Runs great now!
    Did you find this story helpful?
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    brushes worn out

    Gary - February 26, 2020
    Tool Type

    Router

    Difficulty

    Easy

    Time

    Less than 15 minutes

    Tools Used

    Screwdriver

    removed cover, replaced worn brushes with new, replaced cover.
    Did you find this story helpful?
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    Worn cord and arcing from brushes

    Nigel - September 6, 2019
    Tool Type

    Router

    Difficulty

    Easy

    Time

    Less than 15 minutes

    Tools Used

    Screwdriver, Power Drill, Thin finish nail

    Watched you tube video.
    Removed router cover
    Removed and replaced brushes
    Replaced cover
    Plugged in New cord
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    It wasn't the brushes.

    Dale - March 20, 2019
    Tool Type

    Router

    Difficulty

    Medium

    Time

    More than 2 hours

    Tools Used

    Screwdriver

    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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    Main bearing seized and motor brushes were in poor shape

    Andrew - March 1, 2019
    Tool Type

    Router

    Difficulty

    Hard

    Time

    1-2 hours

    Tools Used

    Screwdriver, Pliers, Adjustable Wrench, Mallet, star drive bit set

    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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    Uneven start, excessive sparking

    David - August 23, 2017
    Tool Type

    Router

    Difficulty

    Easy

    Time

    Less than 15 minutes

    Tools Used

    Screwdriver, Pliers

    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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    Magnet broke which broke brush

    Phillip - August 20, 2016
    👍 1 of 2 people found this instruction helpful
    Tool Type

    Router

    Difficulty

    Medium

    Time

    30-60 minutes

    Tools Used

    Screwdriver, Bearing puller

    Removed bearing replaced magnet and brush. Replaced parts with the new ones and reassembled.
    Did you find this story helpful?
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    All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.

    All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.

    Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.

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    This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.

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