Replacing the pump in a Miele dishwasher (HG03 model) can be a complex task that requires careful handling and some technical skills. If you're confident in your ability to perform appliance repairs, follow these general steps to replace the pump: 1. Safety First: Before you start, make sure the dishwasher is turned off and unplugged. Also, gather the necessary tools and replacement parts and work in a well-lit and well-ventilated area. 2. Access the Pump: Depending on the specific model of your Miele dishwasher, accessing the pump might involve removing the bottom panel or the side panels of the dishwasher. Refer to the dishwasher's service manual for guidance on accessing the pump assembly. 3. Disconnect Water Supply: Turn off the water supply to the dishwasher. Disconnect the water supply hose from the inlet valve of the pump. Have a towel or a bucket handy to catch any water that might spill. 4. Disconnect Drain Hose: Disconnect the drain hose from the pump. Again, have a towel ready to catch any water that may come out. 5. Remove Mounting Screws: The pump is typically secured to the dishwasher with mounting screws. Carefully remove these screws using the appropriate screwdriver. 6. Detach Electrical Connections: Disconnect any electrical connections leading to the pump. These could include wires or connectors that power the pump motor. 7. Remove the Pump: Once the mounting screws and electrical connections are removed, carefully pull the pump assembly out of its housing. 8. Install the New Pump: Position the new pump assembly in place, aligning it with the mounting holes. Secure it with the mounting screws, but do not overtighten. 9. Reconnect Electrical Connections: Attach the electrical connections to the new pump as they were connected to the old one. 10. Reconnect Hoses: Reattach the drain hose and water supply hose to the appropriate ports on the new pump. Ensure that the connections are secure and leak-free. 11. Test for Leaks: Before reassembling any panels, turn on the water supply and run a short test cycle to ensure that there are no leaks around the pump connections. 12. Reassemble: Once you're sure there are no leaks and the dishwasher is functioning properly, reassemble any panels you removed to access the pump. 13. Test the Dishwasher: Run a full cycle of the dishwasher to confirm that the pump replacement was successful and that the dishwasher operates as expected. If you're not confident in your ability to perform these steps or if you encounter any difficulties during the process, it's recommended to seek the assistance of a professional appliance technician. Incorrect installation can lead to further problems and safety hazards.