Easy
15-30 minutes
The pressure plate attaches to the self-stop carbon brush assembly. This is a genuine Milwaukee replacement part used in compatible hammer drills. This part is sold individually and is made of plastic. A screwdriver and a set of pliers may be needed during the replacement of this part. It may become broken and will need to be replaced.
Pressure Plate 44-66-5379
OEM part for: Milwaukee
Part Number: 44-66-5379
$4.99
In Stock
Ships within 1 business day 
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Frequently Purchased Together ?
Compatibility
This part will fit the following 4 machines
Milwaukee
5376-20 (D20A) 1/2" Single Speed Hammer-Drill View Diagrams & Manuals
5380-21 (B01B) 1/2" Hammer Drill View Diagrams & Manuals
5380-21 (B01C) 1/2" Hammer Drill View Diagrams & Manuals
5378-21 1/2" Hammer Drill View Diagrams & Manuals
This item works with the following types of products:
- Drill Parts
- Hammer Drill Parts
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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.
Worn motor brushes
Terry - January 27, 2016
Tool Type
Hammer Drill
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Pliers
Symptoms indicating need for repair: Hammer drill motor didn't start when trigger pulled. Motor did start when trigger held and other hand used to smack the tool. When running, excessive arcing seen through the motor cooling vent slots.
I removed the screws on the handle to permit separating the two halves of the handle and get access to the brush holders. Discovered copper cable detached from the top brush and after removing the pressure plate, I could see that the top brush was worn so much that it would no longer contact the armature reliably. When the parts arrived, it was pretty straightforward process to remove the old and install the new. One precaution for the particular hammer drill model I repaired concerns black spacer pads and silver cylindrical components that fit in the halves of the handles. Be sure to look for them when disassembling the tool and replacing them during reassembly.
I removed the screws on the handle to permit separating the two halves of the handle and get access to the brush holders. Discovered copper cable detached from the top brush and after removing the pressure plate, I could see that the top brush was worn so much that it would no longer contact the armature reliably. When the parts arrived, it was pretty straightforward process to remove the old and install the new. One precaution for the particular hammer drill model I repaired concerns black spacer pads and silver cylindrical components that fit in the halves of the handles. Be sure to look for them when disassembling the tool and replacing them during reassembly.
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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.
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