Easy
15-30 minutes
This manufacturer sourced replacement part used on Makita power tools. The purpose of the brush cap is to hold the brush in the brush holder. This cap has external threads that thread into the housing of the tool. Be careful when removing and replacing these, they have a tendency to break. This item is made out of plastic and it is sold individually.
Brush Holder Cap 643941-3
OEM part for: Makita
Part Number: 643941-3
$6.05
In Stock
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Compatibility
This part will fit the following 133 machines
Makita
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Show More Compatible Models
This item works with the following types of products:
- Circular Saw Parts
- Saw Parts
- Miter Saw Parts
- Reciprocating Saw Parts
- Drill Parts
- Hammer Drill Parts
- Impact Driver Parts
- Impact Wrench Parts
- Jig saw Parts
- Rotary Hammer Parts
- Chain Saw Parts
Customer Part Reviews ?
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- 1
Easy repair. Nice quality
Best part for installing new brushes.
Michael -
November 24, 2020
Verified Purchase
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Verified Purchase
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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.
Needed new brushes and new brush caps
Loi - January 12, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Miter Saw
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Removed the brush caps with a screwdriver
Removed the old worn brushes
Installed the new brushes
Screwed on the new brush caps
Removed the old worn brushes
Installed the new brushes
Screwed on the new brush caps
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brushes burnt
clayton - November 26, 2021
Tool Type
Circular Saw
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver
remover case.
cut out old brushes
soldered in new wires
replaced side cover
cut out old brushes
soldered in new wires
replaced side cover
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Brushes and holders were melted.
William - November 26, 2021
Tool Type
Jig saw
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, None
1. Opened up the casting removed the screws with Philips screwdriver.
2. Removed the parts to be replaced
3. Replaced with new parts
4. Tested the controls
5. Closed up the casing.
6. Double checked function
7. All done!
2. Removed the parts to be replaced
3. Replaced with new parts
4. Tested the controls
5. Closed up the casing.
6. Double checked function
7. All done!
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Brushes and caps melted
Stephen - April 28, 2021
Tool Type
Circular Saw
Difficulty
Hard
Time
30-60 minutes
Tools Used
Screwdriver, Wire strippers, wire nut, sand paper, small flat head
1. Take off saw housing
2. Unscrew light
3
4. Disassemble handle
5. Pull light out
6. Pull brush holder wires out. Follow them
And disconnect. Negative line cut, positive line unscrew from trigger. Reinstall new ones.
Wire nut needed for negative line. Be careful taking body apart. Keep note of where spring goes for trigger.
2. Unscrew light
3
4. Disassemble handle
5. Pull light out
6. Pull brush holder wires out. Follow them
And disconnect. Negative line cut, positive line unscrew from trigger. Reinstall new ones.
Wire nut needed for negative line. Be careful taking body apart. Keep note of where spring goes for trigger.
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Overheated/melted brush holders on Makita 18v circular saw
Jonathan - October 30, 2019
Tool Type
Circular Saw
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Electrical Tape
Could not remove brush caps (fused to holder). Removed end motor trim cap, removed half of the handle to expose wiring. Thought I had to take whole motor apart to install new brush holder, but found out that I could remove brush holder just by wiggling wire through motor (had to tape a wire to wires so when I pulled old brush holder through motor, I could reverse process to install new brush holder). Just watch out for any springs in trigger assembly.
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Saw smoked and stopped working
James - May 4, 2019
Tool Type
Circular Saw
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Pliers
Removed cover, disconnected caps, brushes and holders, replaced with new parts.
Much easier then expected and saw functions like new.
Much easier then expected and saw functions like new.
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Positive brush housing melted due to heavy work load.
Richard - January 24, 2018
Tool Type
Circular Saw
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Wire strippers
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My saw was borrowed so I'm not sure the symptoms. I do know the brush holders, the brushes and the caps melted all together to the casing.
Max - May 19, 2017
Tool Type
Circular Saw
Difficulty
Easy
Time
15-30 minutes
Tools Used
, Phillips screwdriver, wire stripper and small screwdriver
My saw was borrowed so I'm not sure the symptoms. I do know the brush holders, the brushes and the caps melted all together to the casing. Being the casing is harder than surrounding, it was relatively easy to pull apart. I removed all Phillips screws in order to separate the casing to access end connection of the brush holders. Unscrewed red wire and replaced with new. I removed the wire crimp tying together the black wires, replaced with new brush holder black wire. Put everything back together and tested. Success!
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Did not work
Rick - January 28, 2016
Tool Type
Circular Saw
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Solder , and iron
Burnt the brushes. Removed the brush caps, then removed the brushes. Cleaned the brush holders with compressed air. Then inserted the new brushes and installed the new brush caps. Works like new
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r&r brush caps and brushes
david - November 26, 2015
Tool Type
Reciprocating Saw
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Unscrew the old brush caps then remove the old brushes. Replace with the new brushes and brush caps. Super easy
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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.
Our 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.
