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How to Change Mortise Lock and its Cylinder

Introduction

Use this guide to replace the mortise lock and cylinder of the door lock.

Door lock details tend to deform as a result of long-term use, this can lead to the door lock becoming unusable. Hence, you may want to consider changing details like mortise lock and cylinder in order to return the door lock to a working condition.

What you need

  1. How to Change Mortise Lock and its Cylinder, Mortise Lock and Cylinder: step 1, image 1 of 3 How to Change Mortise Lock and its Cylinder, Mortise Lock and Cylinder: step 1, image 2 of 3 How to Change Mortise Lock and its Cylinder, Mortise Lock and Cylinder: step 1, image 3 of 3

    • Determine the position of the screws on both door handles and the front plate.

    Edit

  2. How to Change Mortise Lock and its Cylinder: step 2, image 1 of 2 How to Change Mortise Lock and its Cylinder: step 2, image 2 of 2

    • Use a flathead screwdriver to remove the eight 6 mm screws on both handles.

    Edit

  3. How to Change Mortise Lock and its Cylinder: step 3, image 1 of 3 How to Change Mortise Lock and its Cylinder: step 3, image 2 of 3 How to Change Mortise Lock and its Cylinder: step 3, image 3 of 3

    • Pull out the door handles on both sides of the door.

    Edit

  5. How to Change Mortise Lock and its Cylinder: step 4, image 1 of 3 How to Change Mortise Lock and its Cylinder: step 4, image 2 of 3 How to Change Mortise Lock and its Cylinder: step 4, image 3 of 3

    • Pull out the spindle (the rectangular piece of metal) from the door.

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  6. How to Change Mortise Lock and its Cylinder: step 5, image 1 of 3 How to Change Mortise Lock and its Cylinder: step 5, image 2 of 3 How to Change Mortise Lock and its Cylinder: step 5, image 3 of 3

    • Loosen the two 6 mm flathead screws at the top and bottom of the lock using a flathead screwdriver.

    • Remove the third 6 mm Phillips screw in the middle using a Phillips #1 screwdriver.

    Edit

  7. How to Change Mortise Lock and its Cylinder: step 6, image 1 of 2 How to Change Mortise Lock and its Cylinder: step 6, image 2 of 2

    • Pull the lock cylinder out to either side of the door.

    Edit

  8. How to Change Mortise Lock and its Cylinder: step 7, image 1 of 3 How to Change Mortise Lock and its Cylinder: step 7, image 2 of 3 How to Change Mortise Lock and its Cylinder: step 7, image 3 of 3

    • Grasp the mortise lock on either side and pull it out from the edge of the door.

    Edit
Conclusion

To reassemble your device, follow these instructions in reverse order.

One other person completed this guide.

Author

with 2 other contributors

Hikmat Guliyev

Member since: 01/16/21

172 Reputation

1 Guide authored

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Team

York University, Team S1-G11, O'Regan Winter 2021 Member of York University, Team S1-G11, O'Regan Winter 2021

YORK-O'REGAN-W21S1G11

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1 Guide authored

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