To change the drill bit in an impact driver (often mistakenly called an impact "drill"), you hold the chuck and rotate it. This action opens or closes the chuck to release or secure the drill bit.
Here's a breakdown of the process for an impact driver, which is likely what the question refers to since impact drills are less common:
While the provided short video snippet focuses on drills and impact drivers interchangeably, changing the bit in an impact driver is the most common task and the most likely intended meaning of "impact drill head." Therefore, the following instructions primarily focus on impact drivers.
Steps to Change a Bit in an Impact Driver:
- Identify the Chuck: On an impact driver, the "chuck" is usually a quick-release mechanism. It's the part that holds the bit.
- Hold the Chuck: Firmly grasp the chuck with one hand.
- Release the Bit: Most impact drivers have a mechanism that allows you to pull the chuck forward to release the current bit. If your driver requires rotation, turn the chuck counterclockwise.
- Insert the New Bit: Insert the desired bit fully into the chuck. Ensure it's seated properly.
- Secure the Bit: Release the chuck (if you pulled it forward), or rotate it clockwise to lock the new bit in place. You should hear a click or feel it lock into place. Tug gently on the bit to make sure it's secure.
Important Notes:
- Impact drivers typically use bits with a hexagonal shank (1/4-inch hex shank).
- Always ensure the impact driver is powered off or the battery is removed before changing bits.
- Inspect the bit and the chuck regularly for wear and tear. Replace worn or damaged parts as needed.
- Some older models may require tightening after insertion
