Repairing Guides

how to repair a mortise lock

by Angelica Padberg Published 2 years ago Updated 2 years ago
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Steps:

  • Start by removing the old hardware. ...
  • Fit the new lock body into the old mortise. ...
  • To ensure the lock body cover also fits in the old mortise, it may be necessary to chisel out some depth into the door. ...
  • If the holes for the lock body no longer line up with the holes on the face of the door, trace out the new holes using a pencil.

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Part of a video titled How to Repair a Full Mortise Lockset | Ask This Old House
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9:12
Turn. Next i remove the cylinder. Itself. After that i take off the door knob. And finally i canMoreTurn. Next i remove the cylinder. Itself. After that i take off the door knob. And finally i can remove the lock. Box. Alright so as you can see there are a lot of parts and pieces.

Full Answer

How to quickly remove a mortise cylinder lock.?

Remember to get the correct finish when asking for the cylinder so it matches the rest of your lock. 1) Remove the handles and trim/escutcheon plates from door. 2) Remove the cylinder by drilling out its screw. This is done by drilling next to the cylinder, right through the cylinder screw that holds it in place.

How to change a mortice lock?

Things You'll Need

  • Screwdriver
  • Tape measure
  • Wood block
  • Table saw
  • Miter saw
  • Wood glue
  • Pin nailer
  • New lock
  • Chisel

How to reverse the handing on a mortise lock?

There are many ways to determine handing however Allegion recommends the following method:

  • Stand on the outside (secure side) of the door
  • Note the location of the hinges, not the lock
  • If the hinges are on the left, it is a left hand door
  • If the hinges are on the right, it is a right hand door
  • Next note if the door swings toward you or away from you
  • If the door swings away from you, it is a standard swing door

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How to install a wired mortise lock?

How to install a wired mortise lock - read our free guide. Schlage L series . Wiring Controller & Reader. CAT6 or CAT5 cable home run from reader location back to IT room where it will connect to the switch using PoE . Wiring Lock. Wire low voltage 18-2 gauge cable from the electronic door hardware back to the Kisi controller relay located in ...

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How do you fix a mortice lock?

1:243:04How to change a mortice lock - YouTubeYouTubeStart of suggested clipEnd of suggested clipIf they match push the new lock into the mortise hole in the door. Position the faceplates and thenMoreIf they match push the new lock into the mortise hole in the door. Position the faceplates and then fix the lock. If necessary use a hammer and wood chisel to adjust the faceplate cutout.

What are the parts of a mortise lock called?

The parts included in the typical US mortise lock installation are the lock body (the part installed inside the mortise cut-out in the door); the lock trim (which may be selected from any number of designs of doorknobs, levers, handle sets and pulls); a strike plate (or box keep), which lines and reinforces the cavity ...

Can you rekey a mortise lock?

What you can do - Remove the cylinder and take it to a lock shop for a replacement or re-pinning. First you must loosen the set screw. Look at the edge of the door.

How long should a mortise lock last?

Most locksmiths advise that a door lock should be changed once every seven years.

How do you fix a lock that won't turn?

0:032:18How to Repair a Door Lock Video - YouTubeYouTubeStart of suggested clipEnd of suggested clipIf you find it difficult to turn the key in the door lock. Then just take a small tube of graphiteMoreIf you find it difficult to turn the key in the door lock. Then just take a small tube of graphite lubricant shake. It up a little bit. And then shoot a cup of puffs.

How do you open a mortise lock without a key?

0:381:34mortice lock bypass - YouTubeYouTubeStart of suggested clipEnd of suggested clipThat's all we're going to use just a piece of pipe. It's very very easy to throw the ball back onMoreThat's all we're going to use just a piece of pipe. It's very very easy to throw the ball back on that door and unlock it. You watch the board. I'll just hold a lot. The board's back in there now.

Are all mortise locks the same?

Mortise locks are widely used in commercial spaces because of their strength and reliability. The components for each model and brand will vary slightly, but the design of the mortise is meant to withstand use and abuse.

Can you rekey a lock yourself?

You can re-key a lock like a pro at a fraction of the cost. Re-keying kits are available for most lock brands but they're not interchangeable. You must buy a kit for each brand of lock in your home.

What is a mortise cylinder?

0:132:50Difference between Mortise and Rim Cylinder - YouTubeYouTubeStart of suggested clipEnd of suggested clipInto a locking apparatus. And then they set screw is tightened down to secure the mortise cylinderMoreInto a locking apparatus. And then they set screw is tightened down to secure the mortise cylinder in place in the industry we use a mortise housing tool to install the lock.

How do you unlock a mortise lock without a key?

0:381:34mortice lock bypass - YouTubeYouTubeStart of suggested clipEnd of suggested clipThat's all we're going to use just a piece of pipe. It's very very easy to throw the ball back onMoreThat's all we're going to use just a piece of pipe. It's very very easy to throw the ball back on that door and unlock it. You watch the board. I'll just hold a lot. The board's back in there now.

What is the difference between deadlock and mortice lock?

The difference between a mortice deadlock and sash lock is that a mortice sashlock has a latch and bolt to open and close the lock. Where-as a mortice deadlock does not have a latch to open the lock.

What is a mortice door lock?

A mortice lock is used in traditional timber doors, in both external and internal doors. Embedded into the door for extra strength, it provides a locking point in the centre of the door. There are several different options when you are choosing a mortice lock.

Why is the latch mechanism on a lock easier to work with?

The latch mechanism on this lock is easier to work with because it doesn't fly apart when you open the case. There's a leaf spring for the knob return and a separate coil spring for the latch return. Also the the spindle cam pushes directly on a combined arm/transit. Ask Question.

What to do if your latch spring is broken?

If your latch spring is broken or weak then you'll need a replacement. You can take the lock to a local locksmith (find the one that's been around since your house was built). If you have a good spring (maybe in a different lock) you can measure the length of the spring when un-tensioned.

What to do if you don't test the deadbolt?

If you have a key for the lock, also test the deadbolt. Now is your chance to fix things, if you don't test it until you have it back in the door, you'll be sorry when you have to tear it all back out and bring it back to the bench. Make sure your latch is the right way too, if it's backward fix it now.

Can a latch mechanism be tricky?

The latch mechanism can be tricky since the top of the case normally holds it in place. I put the parts together as much as possible with the spring un-tensioned.

Can you use a vise to hold a brass lock?

Use a vise to hold the case body so you can clean the face, but do not over-tighten the vise or clamp directly to the brass face, or you will damage your lock. Ask Question.

How To Fix A Mortise Lock

If your home is more than one-hundred years old, it may have mortise locks. Mortise locks install on the inside edge of the door and use a deadbolt and separate latch.

About Me

Do you own anything valuable? Do you love your family? Do you have a business to protect? If you're like most people, you've answered yes to at least one o f those questions, and if you have, you need locks or safes to keep your possessions, your family members, or your business safe. However, there are a lot of options out there.

How to remove a sash lock?

Firstly remove the handle from one side of the door and remove the spindle (metal bar) that connects both handles through the lock, for a dead type lock there will not be a handle connected in any way to the lock. 2. Remove the front (face) plate from the lock that is visible on the edge of the door. ...

What is a dead lock?

The Dead lock is a lock that does nothing (dead) until you turn the key to throw the lock bolt, see image directly below.

What is a 3 lever lock?

The 3 lever type locks look very similar to 5 lever but are generally lighter and do not have a box type keeper, they do not comply for insurance purposes, the word lever relates directly to the assembly mechanism within the lock, more levers = more security. A sash lock is a lock that has a latch and a lock, the latch is operated by handles ...

Introduction

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

Step 1 Mortise Lock and Cylinder

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

Step 2

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

Step 5

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

Step 7

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

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