Medium
15-30 minutes
This is an Authentic Manufacturer Sourced replacement part used on a Makita Drills/Drivers. This part consists of: Plastic Holder Ring, Two (2) Metal Brush Holders With Springs and Two (2) Lead Wires Attached. This part holds Carbon Brushes around the Armature to provide stable and safe contact. Please note Carbon Brushes are Sold Separately.
To replace this assembly you would need a Screwdriver and Pliers.
• First remove Screws holding the cover together.
• Carefully remove Two (2) Halves of the housing to gain access to Armature and Brush Holder.
• Remove the screws holding Brush Holder to The Trigger.
• Remove the Armature Assembly and the Brush Holder.
• Install the New Brush Holder, Brushes and the Armature
• Reassemble and test your tool.
Brush Holder 638614-1
OEM part for: Makita
Part Number: 638614-1
Ships within 1 business day 
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Product Description ?
- Classification: Part
- Weight: 0.01 lbs.
- Shipping: Ships Worldwide
Frequently Purchased Together ?
Compatibility
This part will fit the following 52 machines
Makita
This item works with the following types of products:
- Cordless Drill Parts
- Drill Parts
- Hammer Drill Parts
Customer Part Reviews ?
- 1
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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.
Motor kept stopping and sparks shooting out
Tool Type
Cordless Drill
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver
over heated & burned fan blades on armature & melted those to brush holder
Tool Type
Hammer Drill
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, needle nose pliers
installed new ones,
most difficulty was re-aligning all parts correctly,
Brush holder melted
Tool Type
Cordless Drill
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Utility knife
Parts Used
Remove melted brush holder.
Be sure to order brushes and brush holder, because the brushes will be melted to the old brush holder. I managed to pry the old brushes out of the melted brush holder but it took some delicate surgery to save the old brushes.
Install the newvbrush holder back in the case and assemble the case. Done.
Drill low on power and stalls
Tool Type
Cordless Drill
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Hook pick to release brush spring.
Parts Used
Drill left in rain, froze up
Tool Type
Impact Driver
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Needle nose pliers
Brushes were shot and brush holder was melted
Tool Type
Cordless Drill
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver
Parts Used
Drill would not turn.
Tool Type
Cordless Drill
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver
2. Replaced the broken parts.
3. Reassembled the drill.
Slow & didn't start
Tool Type
Cordless Drill
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Pick tool
Parts Used
Fan blades broke off and armature fused to brush holder
Tool Type
Cordless Drill
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver
2) Removed screws from case and set aside one half of the case
3) Removed old brush holder from case and disconnected wiring from the trigger
4) Moved magnet coil retention bracket out of the way
5) Removed armature screws from front of drill around chuck
6) Twisted plastic armature retainer and pulled armature assembly out of drill body, taking care not to damage the planetary gears
7) Transferred plastic armature retainer to new armature
8) Transferred magnet coil to new armature and installed the assembly
9) Installed new brushes in new brush holder
10) Installed new brush holder assembly in drill body and connected to the trigger
11) Transferred speed selector switch to new armature.
12) Installed new Rubber Pins into back of drill case
13) Reinstalled magnet coil retention bracket
14) Reassembled drill case and tested
The motor brushes were worn causing the brush holder mechanism to heat up and melt.
Tool Type
Hammer Drill
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
2. Remove all other screws, placing them in order for reinstall.
3. Carefully slide drill rotor out from brush holder.
4. Remove the black and red wires from the drill controller.
5. Install the new brushes in the new brush holder, be sure to put the springs in holding slots.
6. Attach the new brush holder to the drill controller, be sure to install the wire in the correct polarity.
7. Carefully install the drill rotor into the new brush holder. Line the slot up to the drill housing to orient the parts correctly.
8. Place the springs behind the brushes.
9. Reassemble the drill.
The brushes took a few uses to seat properly. The drill is working properly now.
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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.
