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The DEWALT 90566204 is a brush box assembly replacement part designed for DEWALT power tools. The brush box houses the carbon brushes that transfer electrical current to the rotating armature in brushed motor tools. When brush wear causes motor performance to degrade or the tool to stop running, replacing the brush box assembly restores proper electrical contact and motor function. This part is installed by electricians, contractors, and skilled tradespeople performing tool repair and maintenance.
The 90566204 brush box assembly is intended for use in DEWALT brushed motor power tools where the original brush box has worn or failed. This type of component is commonly replaced during routine tool servicing or after extended use in demanding jobsite conditions. Proper fitment ensures consistent motor performance and helps extend the working life of the tool.
Designed as an OEM-style replacement brush box assembly for compatible DEWALT brushed motor power tools. Verify fitment using the original tool model number before ordering.
Brush box replacement should be performed by a qualified technician familiar with power tool repair. Always disconnect the tool from its power source and remove any battery before beginning disassembly. Avoid touching brush contact surfaces during handling to prevent contamination. Reassemble per the tool manufacturer service documentation to ensure proper brush seating and motor clearance.
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