Medium
15-30 minutes
This is an Authentic Manufacturer Sourced replacement part used on a some Makita Drills/Drivers. This part consists of: Plastic Holder Ring, Two (2) Metal Brush Holders and Two (2) Lead Wires Attached. This part holds the Carbon Brushes around the Armature to provide stable and safe contact.
Brush Holder 638494-5
OEM part for: Makita
Part Number: 638494-5
$5.65
In Stock
Ships within 1 business day 
Jump To:
Frequently Purchased Together ?
Compatibility
This Brush Holder will fit the following 44 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Displaying 20 of 44 matching models.
Makita
Show More Compatible Models44 total model matches. Try the above search to narrow your results.
This is the official OEM part for the following brands:
- Makita
This item works with the following types of products:
- Cordless Drill
- Drill
- Hammer Drill
Repair Videos ?
Watch the Repair Video for
Brush Holder
Articles:
|
Brush holder hammered? Learn to remove and install the carbon brush card and holder on your Makita drill with these step...
April 18, 2016
|
Customer Part Reviews ?
Average Rating (out of 5):
Click to filter by ratings:
5 stars
4
4 stars
0
3 stars
0
2 stars
0
1 stars
0
< PREV
- 1
Quick and easy repair of Makita Cordless Drill
The repair of my Makita cordless drill was simple and straigh-forward. The online parts diagram made things simple. I replaced the brush holder and brushes in just a few minutes. A review of the available repair videos made the task a breeze. Perfect fit and function. My drill is good as new. Quick shipping minimized downtime. Thanks for the excellent service!
Charles -
January 27, 2022
Verified Purchase
Perfect replacement,
Received parts for cordless drill and had it running in short order, SAVED $ and back in operation.
Robert -
June 15, 2021
Verified Purchase
Great Part
Worked great
tom -
September 23, 2019
Verified Purchase
Easy Repair, Great Part - Worked as expected!
What can I say? It is the exact part I needed and it fixed my drill.
Guest -
August 2, 2019
Verified Purchase
Questions & Answers ?
Our customer Service team is at the ready daily to answer your part and product questions.
Ask our Team
We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
Does this fit my product?Questions & Answers for Brush Holder
No questions have been asked yet
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.
Brushes worn
Vince - September 24, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Cordless Drill
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Pliers
Parts Used
Many previous instructions good
When putting the drill case back together make sure everything is where it should be and don't force it, if it doesn't fit open it back up & find out why ?
When putting the drill case back together make sure everything is where it should be and don't force it, if it doesn't fit open it back up & find out why ?
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Makita Drill/ Hammer Drill would not turn on.
Josh - July 31, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Cordless Drill
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Pliers
1. Removed all screws from the plastic housings.
2. Removed rear cap and removed all screws.
3. Separated the plastic housings.
4. Removed the rear heat sink.
5. Removed the rear brush holder, armature, and gear box.
6. Cleaned all the parts and greased the gear box.
7. Used Pliers to unplug old brush holder from trigger assembly.
8. Plugged new brush holder into trigger assembly.
9. Installed new armature into brush holder and gear box.
10. Reinserted assembly back into the housing and reinstalled heat sink.
11. Installed housing and reinstalled screws.
12. Installed brushes into brush holder.
13. Installed rear cap.
2. Removed rear cap and removed all screws.
3. Separated the plastic housings.
4. Removed the rear heat sink.
5. Removed the rear brush holder, armature, and gear box.
6. Cleaned all the parts and greased the gear box.
7. Used Pliers to unplug old brush holder from trigger assembly.
8. Plugged new brush holder into trigger assembly.
9. Installed new armature into brush holder and gear box.
10. Reinserted assembly back into the housing and reinstalled heat sink.
11. Installed housing and reinstalled screws.
12. Installed brushes into brush holder.
13. Installed rear cap.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Drill motor seized up due to melted brush housing assembly
William - January 29, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Hammer Drill
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
1. Removed all screws
2. Opened up drill
3. Disconnected brush holder assembly from trigger
4. Removed assembly
5. Placed new brushes in new assembly
6. Reattached everything
7. Put drill back together
8. Tested, no issues
2. Opened up drill
3. Disconnected brush holder assembly from trigger
4. Removed assembly
5. Placed new brushes in new assembly
6. Reattached everything
7. Put drill back together
8. Tested, no issues
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Brush spring was broken
THEODORE - September 28, 2018
Tool Type
Drill
Difficulty
Medium
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
Watched your YouTube video, Very informative
https://www.youtube.com/watch?v=IGc6lWYkcXM
https://www.youtube.com/watch?v=IGc6lWYkcXM
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Overheated drill and melted plastic from brush holder onto brush which did not allow it any movement
RAYMOND - April 29, 2018
Tool Type
Cordless Drill
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Old toothbrush
Parts Used
Removed battery. Removed plastic cap that covers brush holder and brushes. Removed screws separating the left and right half of drill case. Cleaned out old dirt and residue from internal parts with an old toothbrush. Replaced brush holder. Most of the time was spent trying to get the internal drill mechanism pieces in the proper position so that the drill case pieces would go back together without binding the internal pieces. Inserted screws for left and right half. Installed new brushes. Replaced plastic end cap that covers brush holder, which also aligns rear shaft bearing. Installed battery. Drill works as good as new.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Drill lost power, smoke from armature, stopped working except for LED light
Andrew - April 8, 2018
Tool Type
Cordless Drill
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver
Removed screws from case halves separate case, then remove old armature & brushes & brush holder assembly, wipe & blow out case with compressed air. Install new parts put case halves together install screws & use drill, it works fine
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Drill got hot and burned up brushes and armature.
Andrew - March 26, 2018
Tool Type
Cordless Drill
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Pick
1. Removed rear cover (
2. Removed all screws and separated case in half
3. Removed brush holder, armature, and motor from case
4. Replaced parts
5. Assembled and tested drill
2. Removed all screws and separated case in half
3. Removed brush holder, armature, and motor from case
4. Replaced parts
5. Assembled and tested drill
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Drill would not turn on
Adam - April 24, 2017
Tool Type
Cordless Drill
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, compressed air, needle nose pliers
Parts Used
1.Loosen the screws that hold the 2 sides of the drill cover together
2. Gently pry the covers apart until you can see which one of the covers holds the wires, trigger assembly, motor assembly, etc... Place that side down, and remove the other cover. Try not to disturb any of the parts inside, and take a very good look at where everything is.
3. Use some compressed air to clean up the drill.
4. While noticing exactly how it is oriented, lift the motor assembly only enough the remove the brush holder, the carbon brushes should come off with the holder.
5. Clean with air again.
6. Install the new brush holder. Make sure it is placed correctly, then install the new brushes.
7. GENTLY replaced the cover and make sure its fits easily before tightening the cover screws. I found that when the cover does not go back on, it is usually because a part of the motor turned.
2. Gently pry the covers apart until you can see which one of the covers holds the wires, trigger assembly, motor assembly, etc... Place that side down, and remove the other cover. Try not to disturb any of the parts inside, and take a very good look at where everything is.
3. Use some compressed air to clean up the drill.
4. While noticing exactly how it is oriented, lift the motor assembly only enough the remove the brush holder, the carbon brushes should come off with the holder.
5. Clean with air again.
6. Install the new brush holder. Make sure it is placed correctly, then install the new brushes.
7. GENTLY replaced the cover and make sure its fits easily before tightening the cover screws. I found that when the cover does not go back on, it is usually because a part of the motor turned.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Older makita drill overheated and melted the brush holder and armature
Gary - January 8, 2017
Tool Type
Cordless Drill
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver
1. Remove two screws on rear of drill and remove cap taking care not to lose small plugs (smaller than pencil eraser).
2. Remove screw side half of drill housing observing damage and parts orientation. Note there is one screw inside the back cap to unscrew as well.
3. Remove damaged parts and add replacement parts in same orientation. I checked a newer drill for reference, but should have taken a photo before I started.
4. Reassembled taking care on the trigger lock and speed shifter since they try to get out of alignment. There is also a small "T" shaped piece of curved steel that aligns in a groove forward of the chuck. It fell out loose on mine.
5. Check drill operation.
2. Remove screw side half of drill housing observing damage and parts orientation. Note there is one screw inside the back cap to unscrew as well.
3. Remove damaged parts and add replacement parts in same orientation. I checked a newer drill for reference, but should have taken a photo before I started.
4. Reassembled taking care on the trigger lock and speed shifter since they try to get out of alignment. There is also a small "T" shaped piece of curved steel that aligns in a groove forward of the chuck. It fell out loose on mine.
5. Check drill operation.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
My Makita BDF452HW Drill-Dvr had two issues: No electric braking (would "coast" after releasing the switch), & gear assy would "disengage" at times.
Mark - November 2, 2016
Tool Type
Cordless Drill
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Toothbrush (to remove debris/dust from yoke, inner case).
To replace the gear assy, brush set, brush holder assy & switch (AFTER viewing the site's "Replacing the Leaf Spring" video), I
-Removed the rear cover (2 screws outside, 1 screw inside).
-Removed all outside screws from the RH side of the tool's outer case; *kept LH side of the tool lying on the work surface.
-Disengaged the (2) springs holding the brushes in place; separated the brush holder from the yoke.
-Separated the yoke from the gear assy (noting, from the video, that the yoke's "notch" is facing downward!).
-Proceeded to, one-by-one, replace the switch assy, brushes & brush holder, and gear assy.
-Once having all of the (above) parts/assemblies in the positions, re-attached the RH tool case half. This parts MAY require having to "re-work" the yoke into its proper position-- yoke's notch MUST properly seat onto the protrusion on the LH tool case half's.
-Re-attached all of the screws for the RH tool case half.
-Ensured the both brushes were in proper position-- in equal contact with the yoke unit; also ensured that new brushes were properly attached to the brush holder. *Per the Makita Technical Bulletin, the COPPER BRUSH LEADS must be arranged so that they are toward the "OUTSIDE" of the tool.
-Re-attached the rear cover.
-Removed the rear cover (2 screws outside, 1 screw inside).
-Removed all outside screws from the RH side of the tool's outer case; *kept LH side of the tool lying on the work surface.
-Disengaged the (2) springs holding the brushes in place; separated the brush holder from the yoke.
-Separated the yoke from the gear assy (noting, from the video, that the yoke's "notch" is facing downward!).
-Proceeded to, one-by-one, replace the switch assy, brushes & brush holder, and gear assy.
-Once having all of the (above) parts/assemblies in the positions, re-attached the RH tool case half. This parts MAY require having to "re-work" the yoke into its proper position-- yoke's notch MUST properly seat onto the protrusion on the LH tool case half's.
-Re-attached all of the screws for the RH tool case half.
-Ensured the both brushes were in proper position-- in equal contact with the yoke unit; also ensured that new brushes were properly attached to the brush holder. *Per the Makita Technical Bulletin, the COPPER BRUSH LEADS must be arranged so that they are toward the "OUTSIDE" of the tool.
-Re-attached the rear cover.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Load More Install Stories
OEM stands for Original Equipment Manufacturer and means the part you’re buying is sourced directly from the manufacturer who made your product. At eReplacementParts, we sell only genuine OEM parts, guaranteeing the part you’re purchasing is of better design and of higher quality than aftermarket parts.
Learn MoreOur product descriptions are a combination of data sourced directly from the manufacturers who made your product as well as content researched and curated by our content & customer service teams. This content is edited and reviewed internally before being made public to customers.
Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
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.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
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.
