Sargent and Greenleaf Opening a lock / Changing combination

Introduction

This tutorial provides a step-by-step guide on how to open and change the combination of a Sargent and Greenleaf 6700 series lock. Understanding the mechanics of this lock is essential for security professionals, locksmiths, or anyone responsible for maintaining locks. This guide will walk you through the basic components, dialing sequence, and change combination procedure.

Step 1: Understanding the Lock Components

Familiarize yourself with the basic components of the Sargent and Greenleaf 6700 series lock. Key parts include:

• Dial: The rotating mechanism used to input the combination.
• Drive Pin: Engages with the bolt to lock or unlock the mechanism.
• Combination Wheel: Contains numbers that correspond to the correct combination.

Tip: Ensure that the lock is clean and well-maintained to avoid operational issues.

Step 2: Dialing Sequence to Unlock

To successfully unlock the 6700 series lock, follow these steps:

1. Start with the Dial: Turn the dial a few times to the right (clockwise) to reset it.
2. Input the First Number: Turn the dial to the right until you reach the first number of the combination.
3. Turn to the Left: Rotate the dial to the left, passing the first number once, and stop at the second number.
4. Final Turn: Turn the dial to the right again to the last number of the combination.
5. Unlock: Pull the handle or turn the knob to unlock the lock.

Common Pitfall: Avoid rushing the dialing process; take your time to ensure each number is accurately set.

Step 3: Changing the Combination

To change the combination of your lock, follow these steps:

1. Open the Lock: Ensure the lock is in the unlocked position using the current combination.
2. Locate the Change Tool: Use the special change tool provided with the lock.
3. Insert the Tool: Insert the change tool into the designated slot on the lock.
4. Set New Combination: Follow the steps to input your new combination:
   • Turn the dial to the right to set the first number.
   • Turn to the left to the second number.
   • Finally, turn to the right again for the last number.
5. Remove the Tool: Once the new combination is set, remove the change tool.
6. Test the New Combination: Lock and unlock the lock using the new combination to ensure it works properly.

Tip: Write down the new combination and store it securely to avoid forgetting it.

Conclusion

You've learned how to open and change the combination on a Sargent and Greenleaf 6700 series lock. Remember to practice the dialing sequence and ensure you follow the steps carefully when changing combinations. Regular maintenance of your lock will keep it functioning smoothly. For further learning, consider exploring advanced lock mechanisms or security systems.