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In this guide, we’ll walk you through the process of rekeying a mortise lock, step by step. Rekeying a lock is a useful skill, whether you’re a DIY enthusiast or a professional looking to secure your home or business.
If you’re ready to dive in, check out the video below where we demonstrate the entire process!
In this guide, we’ll walk you through the process of rekeying a mortise lock, step by step. Rekeying a lock is a useful skill, whether you’re a DIY enthusiast or a professional looking to secure your home or business.
Rekeying a lock means changing the internal pins of the lock to match a new key, making the old key obsolete.
It’s an effective way to enhance security without needing to replace the entire lock.
We offer professional lock change, repair, and rekey services. We’re here to keep your home secure with quick and reliable solutions.
Tools You’ll Need
Before we get started, here’s what you’ll need to successfully rekey your mortise lock:
1. Test the Keys
Start by testing the current key to confirm it works with the lock. Then, try the new key. You’ll see that the new key doesn’t turn the cylinder, which is why we’re rekeying.
2. Disassemble the Cylinder
Using a flathead screwdriver, locate and loosen the set screw that holds the cylinder in place. Unscrew the cylinder from the lock body carefully. Then, use a follower tool to push the cylinder plug out, keeping the top pins in place to avoid them falling out.
3. Remove the Old Pins
Set aside the old key pins. You’ll no longer need these since we’re updating the lock to work with a new key.
4. Insert New Key Pins
Using a pinning kit, match the new pins to the key cuts of your new key. Place the new pins in the corresponding slots in the cylinder. It’s important that the pins sit flush with the shear line—this ensures the key will turn smoothly.
5. Reassemble the Lock
Once the new pins are inserted and everything looks good, reinsert the cylinder plug, using the follower tool to guide it back into the lock body. Be sure to screw it in securely but not too tight.
6. Test the Lock
Insert the new key and test it to make sure it turns the lock smoothly. Also, test the old key to confirm it no longer works. If everything functions as expected, you’ve successfully rekeyed your mortise lock!
Rekeying is recommended in the following situations:
Rekeying typically takes about 15 to 30 minutes, depending on your skill level and experience.
Yes, rekeying requires a few specialized tools like a follower tool and a pinning kit, which are essential for the process.
Not all locks can be rekeyed. Mortise locks, deadbolts, and other pin tumbler locks are typically rekeyable. If you’re unsure, consult a professional locksmith.
Rekeying can be just as secure as replacing the lock, as long as the lock itself is in good condition. It’s often more affordable as well!
