If you own a Bosch GWS 7-100 grinder, you know how reliable and powerful it can be for your DIY and professional projects. However, over time, the carbon brushes in your grinder may wear out, leading to performance issues or a complete failure to power on. Don’t worry—replacing the carbon brushes is an easy and cost-effective fix that you can do yourself. In this guide, we’ll walk you through the steps to replace the carbon brushes and get your grinder working like new ones.
Replace Carbon Brushes on a Bosch GWS 7-100 Grinder
Why Replace Carbon Brushes?
Carbon brushes are essential components in power tools like grinders. They conduct electricity between stationary wires and moving parts in the motor. Over time, these brushes wear down due to friction and need replacement. Signs of worn-out carbon brushes include:
The grinder not turning on.
Weak performance or erratic operation.
Sparks or unusual noises from the motor.
Replacing the brushes promptly can restore performance and extend the life of your grinder.
What You’ll Need
Before starting, gather these tools and materials:
Replacement carbon brushes (preferably the correct size: 6.5 × 8 × 14 mm for the Bosch GWS 7-100).
Screwdriver (flathead or Phillips, depending on your grinder).
A clean workspace with good lighting.
Step-by-Step Instructions
Step 1: Turn Off and Unplug the Grinder
Safety first! Ensure the grinder is unplugged from the power supply to avoid accidental injuries while working on it.
Step 2: Open the Carbon Brush Covers
Locate the carbon brush covers on both sides of the grinder. Use your screwdriver to carefully remove the screws and open the covers. Set the screws aside in a safe place.
Use a screwdriver to open the cover on both sides.
Step 3: Remove the Old Carbon Brushes
Disconnect the wires connected to the carbon brushes. Gently pull out the worn brushes from their slots. If they are stuck, use a small tool to carefully dislodge them.
Remove the carbon brush on both sides.
The old carbon brush is worn out.
Step 4: Compare the Replacement Brushes
Before installing the new brushes, compare them with the old ones to ensure they are the correct size. In the video, a slightly incorrect size (5 × 8 × 15 mm) was used, which worked but resulted in reduced performance. For optimal results, always use brushes that match the original specifications.
Difference size or carbon brush.
Step 5: Install the New Carbon Brushes
Place the new brushes into the slots, ensuring they sit securely. Reconnect the wires to the brushes, making sure the connections are tight.
Replace the new carbon brush on both sides.
Step 6: Reassemble the Covers
Replace the covers and secure them with the screws. Double-check that everything is tightened properly.
Install back the covers.
Step 7: Test the Grinder
Plug in the grinder and switch it on. If the replacement was done correctly, the grinder should operate smoothly and efficiently.
The grinder is working well.
Pro Tips for Success
Always double-check the size of the replacement brushes to match the original ones.
Regularly inspect your grinder for signs of wear and tear to maintain its performance.
Keep your workspace clean to avoid losing small components like screws.
Conclusion
Replacing the carbon brushes on your Bosch GWS 7-100 grinder is a simple task that can save you time and money while keeping your tool in top condition. Whether you’re a DIY enthusiast or a professional, knowing how to perform this basic maintenance can enhance your grinder’s performance and lifespan.
When it comes to upgrading your bathroom, installing a water heater is an essential task that can enhance your shower experience. In this step-by-step guide, we’ll take you through the key moments of installing a water heater, from unboxing to the final test. Whether you're a DIY enthusiast or a first-time installer, follow along for a smooth installation process.
Install Instant Water Heater Toshiba TWH-38EXPMY
Step 1: Unboxing
First things first, unbox your water heater. Make sure all the parts are included: the main water heater unit, inlet adapters, flexible hose, rain shower set, and the necessary screws, valves, and electrical components.
Taking an Inventory of the Items Ensures a Smooth Installation Process
Step 2: Mount Water Heater
With the unit unboxed, the next step is to remove the screws from the water heater’s cover. This will give you access to the inside of the unit, which is essential for proper installation. Use a screwdriver that matches the screw type to avoid damage.
Remove the Water Heater Cover
Before attaching the water heater to the wall, mark the screw hole locations on all four sides of the water heater. This ensures that your heater is aligned correctly and securely attached.
Marking Screw Hole Locations
Now it’s time to install the water heater. Secure it to the wall using the screws, making sure it’s level and stable. Double-check the placement before tightening the screws completely.
Mount Water Heater
Step 3: Install Piping/Hose
Next, install the stop valve, which controls the flow of water to the heater. Ensure it's tightly secured, as it will be crucial for regulating water flow during use.
Install Hose
Once the stop valve is in place, connect the inlet adapter and the flexible hose to the stop valve. These components allow water to flow into the heater, so it's important to double-check for tight connections to prevent leaks.
Install Adapter
Step 4: Install Power Supply
Now, it's time to install the electrical components. Begin by installing the 20A switch that controls power to the water heater. Safety first: make sure the power is off before handling any electrical connections.
Install 20A switch
Next, install a 15A socket outlet. This will be used to plug in the water heater, so ensure the socket is properly wired and secure. Test it for power once it's installed.
Install a 15A Socket Outlet.
Run the water heater’s power supply using a 3-core cable. Ensure that the wiring is securely connected to both the power source and the water heater.
Install Water Heater Supply
Step 5: Assemble Rain Shower Set and Install
Once the heater is mounted and powered, install the rain shower set. This set typically includes a rain shower head and hand shower, which will be connected to the water heater for a luxurious shower experience.
Assemble Rain Shower 1
Install Rain Shower 2
To attach the rain shower set, mark and drill two holes where you plan to mount the set. Ensure that the placement aligns with your design preferences and that the shower set is secure once installed.
Mark and drill holes to mount the set
Connect the water heater outlet to the 3-way valve, and from there, connect the outlet to the hand shower. This step allows you to switch between the rain shower and the hand shower depending on your preference.
Mount Rain Shower Head
Install Hand Shower
Connect the Hose Rain Shower set to the Outlet Water Heater.
Step 5: Test the Water Heater
Rotate the main valve and test the water flow through both the rain shower and the hand shower. Adjust the valve to ensure the flow is even, and make sure that both outlets are functioning properly.
Test Water Flow
The final step is to test the system with the pump on. Switch on the power and press the start button on the water heater pump. You should see an increase in water flow, and the temperature control should be responsive.
Test the Water Heater Pump and Temperature
The link tools and components replacement I used in this video are listed below:
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