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Repair Parts Home  Power Tool Parts  Makita Parts  638494-5 Brush Holder

Brush Holder

Part Number: 638494-5
Makita
Availability: 25+ in stock
Price: $4.10
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Description:
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.
Product Information
Manufacturer: Makita
Product Number: 638494-5
Classification: Part
Weight: 0.01 lbs.
Shipping: Ships Worldwide
Repair Guides
Articles:
How to Replace the Brush Holder on a Makita Cordless Hammer Drill (Model LXPH01)
Brush holder hammered? Learn to remove and install the carbon brush card and holder on your Makita drill with these step...
April 18, 2016
Related Products
Compatibility

This part is compatible with the following machines:

Makita

Products Compatibility

This item works with the following types of products:

  • • Cordless Drill
  • • Drill
  • • Hammer Drill
Questions & Answers

No questions have been asked yet
Repair Instructions: Submitted by Customers Like You
1 of 1 people found this instruction helpful
Tool Type:
Cordless Drill
Parts Used:
Brush Holder - 638494-5
Carbon Brush Set - CB440
Repair Difficulty:
Medium
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, Pliers
Brushes worn
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 ?
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1 of 1 people found this instruction helpful
Tool Type:
Cordless Drill
Parts Used:
Change Lever - 419250-0
Brush Holder - 638494-5
Carbon Brush Set - CB440
Armature - 619263-3
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, Pliers
Makita Drill/ Hammer Drill would not turn on.
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.
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1 of 1 people found this instruction helpful
Tool Type:
Hammer Drill
Parts Used:
Brush Holder - 638494-5
Carbon Brush Set - CB440
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Screwdriver
Drill motor seized up due to melted brush housing assembly
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
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Tool Type:
Drill
Parts Used:
Brush Holder - 638494-5
Repair Difficulty:
Medium
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Screwdriver
Brush spring was broken
Watched your YouTube video, Very informative
https://www.youtube.com/watch?v=IGc6lWYkcXM
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Tool Type:
Cordless Drill
Parts Used:
Brush Holder - 638494-5
Carbon Brush Set - CB440
Repair Difficulty:
Medium
Time Spent Repairing:
30-60 minutes
Tools Used:
Screwdriver, Old toothbrush
Overheated drill and melted plastic from brush holder onto brush which did not allow it any movement
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.
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Tool Type:
Cordless Drill
Parts Used:
Armature - 619198-8
Brush Holder - 638494-5
Carbon Brush Set - CB440
Repair Difficulty:
Easy
Time Spent Repairing:
30-60 minutes
Tools Used:
Screwdriver
Drill lost power, smoke from armature, stopped working except for LED light
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
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Tool Type:
Cordless Drill
Parts Used:
Brush Holder - 638494-5
Carbon Brush Set - CB440
Armature - 619263-3
Rear Cover - 452202-8
Repair Difficulty:
Medium
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, Pliers, Pick
Drill got hot and burned up brushes and armature.
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
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Tool Type:
Cordless Drill
Parts Used:
Brush Holder - 638494-5
Carbon Brush Set - CB440
Repair Difficulty:
Medium
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, compressed air, needle nose pliers
Drill would not turn on
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.
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Tool Type:
Cordless Drill
Parts Used:
Armature - 619198-8
Brush Holder - 638494-5
Carbon Brush Set - CB440
Rubber Pin 4 - 263032-0
Repair Difficulty:
Medium
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver
Older makita drill overheated and melted the brush holder and armature
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.
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Tool Type:
Cordless Drill
Parts Used:
Switch - 650583-6
Gear Assembly - 125348-0
Brush Holder - 638494-5
Carbon Brush Set - CB440
Repair Difficulty:
Medium
Time Spent Repairing:
30-60 minutes
Tools Used:
Screwdriver, Toothbrush (to remove debris/dust from yoke, inner case).
My Makita BDF452HW Drill-Dvr had two issues: No electric braking (would "coast" after releasing the switch), & gear assy would "disengage" at times.
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.

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Discussion
Discussion for Brush Holder - ( 638494-5 )
Discussion is closed. To ask our experts a question about a part, use the Q&A feature.
Question: Makita BHP452WH

1073742

After replace the Amature, its still not working, any hints
Need more info. On the BHP451 it was common for the brush holder to over heat and melt. Locking the brushes in place. Other then that it would be the switch or broken wire.
Good luck
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