Milwaukee M18 Fuel 2939-20 Operator's Manual

Milwaukee M18 Fuel 2939-20 Grinder manual cover

Pages 20

Year 2022

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of 20

Milwaukee M18 Fuel 2939-20 Grinder Specification

The Milwaukee M18 Fuel 2939-20 Grinder is a high-performance, cordless tool designed for demanding grinding applications. It operates on the M18 Fuel platform, which ensures maximum power efficiency and extended tool life. The grinder is powered by Milwaukee’s advanced POWERSTATE Brushless Motor, delivering more power, longer motor life, and quieter operation compared to traditional brushed motors. This motor, combined with the REDLITHIUM battery technology, provides superior runtime and performance.

The 2939-20 model features a 4.5-inch to 5-inch wheel capacity, making it versatile for a range of grinding tasks. It offers a maximum speed of up to 8,500 RPM, allowing for efficient material removal and smooth operation. The tool-free guard adjustment and the FIXTEC nut system enable fast and easy accessory changes, minimizing downtime and maximizing productivity on the job site.

Ergonomically designed for user comfort, the grinder includes a slim handle design that enhances grip and control, reducing user fatigue during extended use. The REDLINK PLUS intelligence system optimizes performance and provides overload protection, ensuring the tool maintains high performance even under heavy loads.

The Milwaukee M18 Fuel 2939-20 Grinder is compatible with all M18 batteries, offering flexibility and convenience for users who already own other M18 tools. Its durable construction and advanced electronics make it suitable for professional tradesmen who require a reliable and robust tool. With its combination of power, efficiency, and user-friendly features, the M18 Fuel 2939-20 Grinder stands out as a top choice for both industrial and residential grinding applications.

Milwaukee M18 Fuel 2939-20 Grinder F.A.Q.

How do I change the grinding wheel on the Milwaukee M18 Fuel 2939-20 Grinder?

To change the grinding wheel, first ensure the grinder is turned off and the battery is removed. Use the included wrench to loosen the wheel nut and remove the old wheel. Place the new wheel onto the spindle, ensuring it is seated properly. Tighten the wheel nut securely before reattaching the battery.

What is the best way to maintain the Milwaukee M18 Fuel 2939-20 Grinder for optimal performance?

Regularly clean the grinder to remove dust and debris. Inspect the grinding wheel for wear and replace it if necessary. Ensure the battery contacts are clean and charge the battery according to the manufacturer's instructions. Lubricate moving parts as needed to keep the tool operating smoothly.

What should I do if the grinder is not starting?

Check if the battery is fully charged and properly connected. Inspect the battery terminals for dirt or damage. Ensure the safety lock-off is disengaged. If the grinder still doesn't start, consult the user manual or contact customer support for further assistance.

How can I improve the battery life of my Milwaukee M18 Fuel 2939-20 Grinder?

To improve battery life, avoid overcharging by removing the battery from the charger once fully charged. Store the battery in a cool, dry place when not in use. Regularly cycle the battery by fully charging and then discharging it. Use the grinder at optimal speeds to reduce strain on the battery.

Can I use the grinder for cutting metal, and what precautions should I take?

Yes, the grinder can be used for cutting metal. Ensure you use a cutting wheel specifically designed for metal. Wear appropriate personal protective equipment, such as safety glasses, gloves, and a dust mask. Secure the workpiece and maintain a steady grip on the tool.

How do I adjust the guard on the Milwaukee M18 Fuel 2939-20 Grinder?

To adjust the guard, first ensure the grinder is turned off and the battery is removed. Loosen the guard's clamping lever, rotate the guard to the desired position, and then tighten the lever securely. Ensure the guard is properly aligned and locked in place before use.

What type of maintenance does the brushless motor require?

The brushless motor in the Milwaukee M18 Fuel 2939-20 Grinder is designed to be maintenance-free. However, it's important to keep the tool clean and free of debris that could affect the motor's performance. Regularly inspect the tool for any signs of damage or wear.

How do I know when it's time to replace the grinding wheel?

Replace the grinding wheel if you notice excessive wear, cracks, or if it vibrates excessively during use. A wheel that is worn down to the manufacturer's minimum recommended diameter should also be replaced. Always consult the user manual for specific guidelines.

What should I do if the grinder overheats during use?

If the grinder overheats, stop using it immediately and allow it to cool down. Check for any obstructions or debris that may be causing strain. Ensure the airflow vents are clear. If overheating persists, consult the user manual or contact customer support.

Are there any specific safety features on the Milwaukee M18 Fuel 2939-20 Grinder I should be aware of?

Yes, the grinder includes a safety lock-off lever to prevent accidental start-up, an adjustable guard for protection, and an anti-vibration handle to reduce user fatigue. Always read the user manual to familiarize yourself with all safety features.