Product Description
**Milwaukee parts change not only by model# but also by serial number. To look up your tools parts break down on Milwaukee's website please click here:
Milwaukee Field Service
Model Number: 18-70-0143
The Milwaukee 18-70-0143 is a genuine OEM Field Service replacement part for compatible Milwaukee corded tools. The field, also known as the stator, is the stationary electromagnetic winding assembly that surrounds the rotating armature in the tool's brushed universal motor. As the armature spins inside it, the field generates the magnetic field that drives that rotation and produces the motor's torque, so the field and the armature work together as the two halves of the motor: the field stationary, the armature rotating within it. When the field winding fails or becomes damaged through insulation breakdown, burnt windings, or an open circuit, the result is reduced power output, overheating, or complete motor failure. Replacing the field with the correct genuine Milwaukee OEM part restores the motor to its original power output and operating specification, and using a genuine field ensures the correct voltage rating, winding configuration, and precise fit, all of which are critical to safe, reliable motor operation. The service designation indicates it is packaged as a complete, ready-to-install replacement.
Because Milwaukee Tool specifies replacement parts by both catalog number and serial number, and because a field is wound to the exact voltage and specification of the motor it serves, always verify your tool's serial number against the official Milwaukee service parts diagram before ordering to confirm this is the correct field for your tool. A non-OEM or wrong field may not meet Milwaukee's electrical specifications and can cause poor performance or damage the armature and surrounding components. Because the field and armature are matched components in the motor, it is good practice to inspect the armature, the carbon brushes, and the commutator when replacing the field, and to replace worn brushes at the same time, since a motor rebuild is most reliable when the field, armature, and brushes are all in good condition. Because this is an electrical motor repair, follow the correct service procedure, note the wiring connections before removing the old field, and route and connect the new field exactly as original. Service should be performed by someone competent to work on power tool electrics.
Features
- Genuine Milwaukee OEM service part, not an aftermarket substitute
- Field Service replacement, the motor's stationary stator winding
- Surrounds the rotating armature in the brushed universal motor
- Generates the magnetic field that drives armature rotation and motor torque
- Works together with the armature as the two halves of the motor
- Supplied as a complete, ready-to-install service unit
- Restores full motor output after a burnt, shorted, or open field
- Manufactured to Milwaukee's original voltage and winding specifications
- Prevents further damage to the armature and surrounding motor components
- Inspect the armature, brushes, and commutator when replacing the field
- Electrical service should be performed by a competent servicer
- Verify catalog number and serial number before ordering
Specifications
- Manufacturer: Milwaukee Tool
- Part Number: 18-70-0143
- Official Description: Field Service
- Component Type: Motor field assembly (stator)
- Function: Generates the magnetic field that drives the armature
- Supplied As: Complete, ready-to-install service field
- Primary Fitment: Compatible Milwaukee corded tools - verify by model and serial number
- Also Referenced On: Verify additional applications using Milwaukee's online parts lookup
- Parts Diagram Position: Verify the figure and bulletin number on Milwaukee's online parts lookup
- Recommended Companion Service: Inspect the armature and replace carbon brushes
- Quantity: Sold individually, (1) required per tool
- Part Type: Genuine Milwaukee OEM Replacement Part
Includes
- (1) Milwaukee 18-70-0143 Field Service
The armature, carbon brushes, brush holders, and other motor components that work with the field are NOT included, vary by tool, and are sold separately - refer to your tool's parts diagram for the correct part numbers and quantities. Always verify by serial number using Milwaukee's online parts lookup before ordering.
