A sliding glass door’s adjustable mortise latch is replaced in this quick fix. Due to the potential home security risk that a broken latch poses, the goal is to replace the broken/damaged latch with the same type.
If the rapid fix is done wrong, the latch or its replacement may be lost inside the door. If you’re not confident you’ll be able to keep the latch from falling out, enlist the help of a friend or family member.
Damaged/broken latch symptoms include:
- Considerably loose
- Door can be forced opened while locked
- Cannot be unlocked/locked
Step 1: Remove the outer layer
- Unscrew the two 50mm screws on the inner and outer handles with a Phillips #3 screwdriver.
- Take the handles off.
Step 2: Preparation
- Make sure the latch key is pointing downward when you use it.
- To keep the mechanism from falling, insert the second screwdriver or dowel into the bottom hole or latch keyhole.
If the screwdriver/dowel is not inserted, the latch mechanism may fall inside the door.
- Remove the two 13mm screws from the door using a Phillips #3 screwdriver while holding the latch.
- While unscrewing the mechanism from the door, make careful to keep the latch in place.
Step 4: Dismantle the Mechanism
Remove the mechanism from the door by moving it lower while holding the latch.
Step 5: Replacement Preparation
- Set the latch to the lock position using the latch key.
- The mechanism can be inserted even if the latch is not removed. It will be easier to install if you use the latch as a handle.
Step 6: Installation
- Install the mechanism by starting at the top and holding the latch.
- Do not release go of the latch until Step 7 is completed.
Step 7: Continuing with the Installation
- Screw the two 13mm screws into the original holes with a Phillips #3 screwdriver.
- Once the mechanism is fastened into the door, remove the screwdriver or dowel from the hole.
Step 8: Adjust the Latch
- Return the latch key to its original position in the keyhole.
- Return the latch key to its original position of unlocked.
Step 9: Handle Positioning
- Replace the handles and use a Phillips #3 screwdriver to secure the two 50mm screws.
- Double-check that the outer and inner handles are in line. There’s nothing more annoying than a misaligned door doorknob!