Product Description
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Milwaukee Hall Sensor Trigger Assembly Kit
Model Number: 14-46-0187
The Milwaukee 14-46-0187 Hall Sensor Trigger Assembly Kit is a genuine OEM replacement service kit designed for the Milwaukee 2585-20 M12 FUEL 6 in. Random Orbital Sander (3/16 in. orbit throw, serial code P16A), Milwaukee's professional cordless random orbital sander built for automotive body technicians, restoration shops, refinishing crews, and any tradesperson sanding body filler, primer, and paint on automotive panels. Milwaukee documents this part as Sensor Trigger Assembly in service bulletin 54-38-2705, with the "Hall Sensor" designation in the dealer description referring to the Hall-effect sensor technology integrated into the trigger assembly. The Hall-effect sensor is a magnetic field sensor that detects the position of the trigger as the operator presses it, then sends a continuously variable electronic signal to the POWERSTATE brushless motor controller. This is the engineering that delivers the feathering trigger control that Milwaukee markets as the defining feature of the 2585-20: smooth, precise speed modulation through the 3,200 to 12,000 RPM speed range without the on-off step that conventional mechanical switch triggers produce.
A failed, intermittent, sticking, or unresponsive Hall sensor trigger assembly is one of the most critical service issues on a brushless cordless sander. Symptoms include the sander failing to start when the trigger is pressed, the speed running away to full RPM regardless of trigger position, intermittent speed cuts during use, the sander failing to ramp up smoothly, or the variable-speed dial setting being ignored. Replacing the trigger assembly with this OEM service kit restores correct trigger response, the full 3,200 to 12,000 RPM variable-speed range, and the feathering trigger control that makes the 2585-20 precise enough for finish sanding work. Because Milwaukee Tool specifies replacement parts by both catalog number and serial number, always verify your tool's serial number against the official Milwaukee 2585-20 service parts diagram before ordering, since Milwaukee uses different trigger assembly part numbers across their cordless sander lineup and the specific companion service parts (motor assembly, rotor assembly, PCBA, retention assembly, vacuum port kits, and other internal parts on the same bulletin) vary by sander model and orbit throw size. Verify by serial number using Milwaukee's online parts lookup before ordering to confirm correct fitment.
Features
- Genuine Milwaukee OEM replacement service kit, direct factory part for the 14-46-0187 reference
- Designed for the Milwaukee 2585-20 M12 FUEL 6 in. Random Orbital Sander (3/16 in. orbit throw)
- Hall-effect sensor trigger assembly for brushless motor variable-speed control
- Detects trigger position via magnetic field changes for continuously variable speed signal
- Delivers the feathering trigger control that defines the 2585-20 sanding experience
- Critical for the full 3,200 to 12,000 RPM variable-speed range of the 2585-20
- Documented as Sensor Trigger Assembly on Milwaukee service bulletin 54-38-2705
- Sold as a complete kit with all assembly components needed for service replacement
- Restores correct trigger response, motor ramp-up, and variable-speed function
- Manufactured to Milwaukee factory tolerances and electronic specifications
- Direct-fit replacement, no modification required for installation
Specifications
- Manufacturer: Milwaukee Tool
- Part Number: 14-46-0187
- Official Description: Sensor Trigger Assembly (marketed as Hall Sensor Trigger Assembly Kit)
- Component Type: Hall-Effect Sensor Trigger Assembly for Brushless Motor Speed Control
- Sensor Technology: Hall-effect magnetic field sensor
- Primary Fitment: Milwaukee 2585-20 M12 FUEL 6 in. Random Orbital Sander (3/16 in. orbit, Serial P16A)
- Tool Speed Range Controlled: 3,200 to 12,000 RPM (variable)
- Service Bulletin Reference: 54-38-2705 (parts list), 54-38-2700 (main 2585-20 bulletin)
- Tool Platform: Milwaukee M12 FUEL System
- Quantity: Sold as a complete service kit, 1 per order
- Part Type: OEM Service Replacement Kit
Includes
- (1) Milwaukee 14-46-0187 Hall Sensor Trigger Assembly Kit
- Note: The companion internal service parts on the same bulletin (motor assembly, rotor assembly, PCBA, retention assembly, quick change mechanism kit, vacuum port kits, speed dial kit, UI bottom kit) vary by sander model and orbit throw size - order companion service parts by your specific tool's serial number rather than by assumption
- Note: Verify your tool's catalog number (2585-20) and serial number against the official Milwaukee parts diagram before ordering
