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Larry DudleySep 6, 2025
Why can the hand wheel be turned without resistance on my Hilti DD 150-U Drill?
- JJeffrey MarshallSep 6, 2025
If the hand wheel can be turned without resistance, the shear pin is likely broken and needs to be replaced.
Why can the hand wheel be turned without resistance on my Hilti DD 150-U Drill?
If the hand wheel can be turned without resistance, the shear pin is likely broken and needs to be replaced.
What to do if the Hilti Drill multifunction display indicates "0" and the core bit doesn't rotate?
If the multifunction display indicates "0" and the diamond core bit doesn’t rotate, the gear selector isn’t engaged. Operate the gear selector until it engages.
How to run in Hilti DD 150-U Drill after carbon brushes are changed?
After changing the carbon brushes, they need to be run in. Let the machine run under no load for at least 1 minute without interruption.
Why does my Hilti Drill drilling system have too much play?
Excessive play in the drilling system can stem from several issues. The core bit might not be securely tightened in the chuck; tighten it, remove it, rotate it approximately 90 degrees, and refit it. The core bit connection end or chuck could be defective, so check and replace them if necessary. Finally, the carriage might have too much play, requiring you to adjust the play between the rail and carriage.
Why am I unable to activate hole-starting mode on my Hilti DD 150-U?
You might be unable to activate hole-starting mode because the drill is currently drilling. Turn the hand wheel until the core bit is no longer in contact with the base material. Another reason could be that the motor has overheated and the drill is in cooling mode, so you should complete the cooling process.
What does 'remaining running time until the carbon brushes are changed' mean on my Hilti DD 150-U?
This message indicates that the carbon brush wear limit has almost been reached. The drill will continue to run for a few hours until it shuts down automatically. You should have the carbon brushes replaced at the next opportunity.
Why is water escaping at the water swivel or gear housing of my Hilti DD 150-U?
If water is escaping at the water swivel or gear housing, it could be because the water pressure is too high; reduce it. Alternatively, the rotary shaft seal may be worn out, in which case you should replace it.
What to do if the diamond core bit doesn't rotate on my Hilti Drill?
If the diamond core bit doesn’t rotate, it may have become jammed in the hole. Ensure you guide the drill in a straight line. To release the core bit, disconnect the supply cord plug from the power outlet, grip the core bit with an open-end wrench close to the connection end, and rotate it. If using a drill stand, turn the hand wheel and try moving the carriage up and down.
What does it mean when my Hilti DD 150-U Drill requires service?
When your Hilti Drill requires service, it could be due to worn-out carbon brushes that need replacement. It may also be due to water in the motor. In the second case, allow the diamond core drilling machine to dry out completely in a warm, dry place.
What to do if water escapes at the chuck during Hilti DD 150-U operation?
If water is escaping at the chuck during operation, it could be due to a few reasons. First, ensure the core bit is securely tightened in the chuck. Remove the core bit, rotate it approximately 90 degrees, and refit it. Second, the core bit connection end or chuck might be dirty, so clean and grease them. Finally, the seal at the chuck or connection end could be defective, so check and replace it if necessary.
General| Power Source | Electric |
|---|---|
| Rated Input Power | 2200 W |
| Drilling Range - Wet | 25 - 162 mm |
| Drilling Range - Dry | 25 - 162 mm |
| Gear number | 3 |
| Base material | Concrete |
Covers work area, electrical, and personal safety precautions.
Specific safety instructions for all operations and using long drill bits.
Highlights safety aspects specific to diamond drilling operations.
Further personal safety advice and power tool use/care guidelines.
Identifies components of the core drilling machine, drill stand, and accessories.
Defines the product's designed purpose and operating conditions.
Lists technical specifications for the drilling machine.
Procedure for installing a diamond core bit in a BI+ chuck.
Steps for fitting a core bit using an alternative chuck type.
How to safely remove a core bit from a BI+ chuck.
Procedure for removing a core bit with an alternative chuck.
How to test and operate the PRCD for safety.
Guidance on cleaning and maintaining the drilling machine.
Procedure for replacing worn carbon brushes in the machine.
Troubleshooting steps for machine malfunctions and non-operation.
Troubleshooting steps for issues encountered when the machine is running.
