Easy
15-30 minutes
This is a genuine OEM sourced replacement part which is specially designed for Makita power tools. This is a complete assembly which is sold individually, keep in mind, it includes the armature, the fan, the armature bearing and the commutator end bearing. Due to constant contact with carbon brushes armature will eventually wear out and would need to be replaced to maintain peak performance. It is highly recommended to replace both carbon brushes when replacing an armature. Please make sure to refer to the appropriate diagrams of your model for the correct location and application of this component.
Armature Assembly 115v 517646-0
OEM part for: Makita
Part Number: 517646-0
$21.89
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Compatibility
This part will fit the following 9 machines
Makita
GA4030K 4" Angle Grinder View Diagrams & Manuals
GA4530 4-1/2" Angle Grinder View Diagrams & Manuals
GA4534 Paddle Switch Angle Grinder View Diagrams & Manuals
PJ7000 Plate Joiner View Diagrams & Manuals
GA4030 4" Angle Grinder View Diagrams & Manuals
GA4530X Grinder View Diagrams & Manuals
GA5030K (Type 1) Grinder View Diagrams & Manuals
GA5030K (Type 2) Grinder View Diagrams & Manuals
GA5030K (Type 3) Grinder View Diagrams & Manuals
Show More Compatible Models
This item works with the following types of products:
- Grinder Parts
- Plate Joiner Parts
Repair Videos ?
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Armature Assembly 115v
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February 18, 2022
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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.
Armature had gotten wet, shorted at the brush contact pointed burning it.
Jack - November 15, 2015
👍 5 of 5 people found this instruction helpful
Tool Type
Grinder
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Wrench Set
Parts Used
Remove one screw on cord end allowing cover to slide back over power cord exposing brushes and hold down springs, lift springs gently removed brushes. On grinder end removed 4 screws removing grinder wheel shaft, remover armature end shaft nut, remove 4 screws holding front housing along with old armature replace in reverse order using light oil on brush end of new armature only at bearing seal to help it slide in. Of course check before installing for dirt or debris that might impede assembly.
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Armature was missing a big section
Jim - July 25, 2017
👍 4 of 4 people found this instruction helpful
Tool Type
Grinder
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, 10mm open end wrench
Remove grinder head, remove brush cover, (1 screw at cord end) remove 10mm nut from head end. Remove both brushes. Install new armature, install grinder head, install new brushes, install brush cover. After all that, I turned on and it jerked 2 times, tried to start. But failed. I then removed brush cover & inspected brushes. I could see the brush holders were bent, possibly from hitting the old armature section. Slightly adjusted brush holders so brushes would contact armature all the way. Reinstalled & it worked great!
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Armature and brushes were burnt out.1
Jimmy - September 1, 2018
👍 3 of 3 people found this instruction helpful
Tool Type
Grinder
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Wrench Set, 90 degree pick to pull back brush springs.
1. Opened up Makita grinder.
2. Removed 10mm but to separate armature from drive gear.
3. Removed both brush hold down springs with pick.
4. Removed both brushes.
5 Removed armature.
6. Installed new armature.
7. Installed brushes and placed hold down springs onto brushes.
8. Installed drive gear and nut on new armature.
9. Closed up grinder housing.
10. Tested grinder which worked great.
2. Removed 10mm but to separate armature from drive gear.
3. Removed both brush hold down springs with pick.
4. Removed both brushes.
5 Removed armature.
6. Installed new armature.
7. Installed brushes and placed hold down springs onto brushes.
8. Installed drive gear and nut on new armature.
9. Closed up grinder housing.
10. Tested grinder which worked great.
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All the smoke escaped from the motor
Chris - March 3, 2019
👍 1 of 1 people found this instruction helpful
Tool Type
Grinder
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Wrench Set, volt meter
The grinder was overloaded on low voltage and overheated. The first thing I did was to determine if the grinder was worth fixing. I took the gear head apart to look at the gears. They looked perfect, so I proceeded with the repair.
1. Remove the end cap at the cord end.
2. Lift the brush spring off the brushes and extract and inspect the brushes. Looked good.
3. Remove 4 screws holding the gear case to the body, and pull the head and armature out.
4. Remove the nut hoding the spur gear on the armature and pull it from the case. The armature had small black holes in the windings where the smoke escaped. Inspect the field windings. Check for shorts between the wires and the case. None found. Looks like a good candidate for repair.
Order the parts (armature). Wait a few days for shippment, ressemble in reverse order.
Plug it in and look for more smoke. None found. Great inexpensive repair.
1. Remove the end cap at the cord end.
2. Lift the brush spring off the brushes and extract and inspect the brushes. Looked good.
3. Remove 4 screws holding the gear case to the body, and pull the head and armature out.
4. Remove the nut hoding the spur gear on the armature and pull it from the case. The armature had small black holes in the windings where the smoke escaped. Inspect the field windings. Check for shorts between the wires and the case. None found. Looks like a good candidate for repair.
Order the parts (armature). Wait a few days for shippment, ressemble in reverse order.
Plug it in and look for more smoke. None found. Great inexpensive repair.
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Armature burnt up where brushes make contact
michael - August 23, 2017
👍 2 of 3 people found this instruction helpful
Tool Type
Grinder
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Wrench Set, Hammer, vise
Removed handle this is held on by 4 screws and it allowed me to see burnt armature . Removed 4 more screw to separate head and gear assembly. Removed nut at the top of armature to release gear and pull top of armature through head assembly. Released spring tension on brushes disconnected brush wire contact and pulled brushes out and replaced installed armature back into head assembly reinstalled gear nut and put handle back on then released brushes installed 4 screws.
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Armature burned out.
Richard - April 11, 2022
Tool Type
Grinder
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver
Parts Used
Removed old armature and replaced with new one.
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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.
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