User Manual Q&AAnswer
Feb 25, 2025 - 06:34 AM
To change the carbon brushes on the HILTI DD 110-D Diamond Core Drill, please follow these steps:
1. Unplug the supply cord from the power outlet to ensure your safety.
2. Open the carbon brush covers on the left-hand and right-hand side of the motor.
3. Take note of how the carbon brushes are fitted and how the conductors are positioned. This will help you during the replacement process.
4. Remove the worn carbon brushes from the diamond core drilling machine.
5. Fit the new carbon brushes in the same position as the old ones. Make sure they are inserted correctly and securely.
6. Take care not to damage the insulation on the indicator lead as you insert the brushes.
7. Close the carbon brush covers on the left-hand and right-hand side of the motor and tighten the retaining screws.
8. Run in the carbon brushes by letting the machine run under no load for at least 1 minute without interruption.
9. After replacing the carbon brushes, the service indicator lamp will go out after the machine has run for approximately 1 minute.
Please refer to the "Replacing the carbon brushes" section in the HILTI DD 110-D Diamond Core Drill Instruction Manual for more detailed information and illustrations.
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