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Medeco Lock Replacement
Rim & Mortise Cylinders

2014-8-9

This DIY is not New Installation. I replace the Rim & Mortise Cylinder because I dropped my key and I am afraid of someone picked up and break into my home.

My door lock was used for about 2 years. Therefore, there are many scratches.

Before you start this DIY Door Lock Replacement, you SHOULD ask someone as your assistant staying inside the house. Your assistant can open the door for you if you do something wrong and lock yourself outside, especially after the replacement and testing the LOCK & OPEN.

Medeco Lock

This is my Medeco Door Lock.

Outdoor part

Medeco Lock

Indoor part

Pay attention to the Hex Cap Screw on the handle, you have to screw it out by an Hexagon screw driver.

Then you can pull out the handle

Medeco Lock Replacement

The Handle is removed.

This time, unscrew the "+" Screws and remove the plate.

After removing the plate, you can see the Lock Cylinder. There is a PIN locking the Cylinder in place.
Unscrew and remove the plate

Loosen the screw

You can find the PIN locking the cylinder in place mentioned above can be screwed out counter-clockwisely.

The Lock Cylinder is removed.

Medeco

You can see the pit clearly. This is the mechanism of the Pin and the Pit preventing the Lock Cylinder being unscrewed from outside.

After removed the Old Lock Cylinder, you can install the New one according to the inverted sequence.

This is not a difficult DIY; however, you may make one or two scratches on the door lock / lock cylinder because we do not have the professional tools or dedicated tools for the Medeco product.

The last reminder is:
You SHOULD ask someone as your assistant staying inside the house. Your assistant can open the door for you if you do something wrong and lock yourself outside, especially after the replacement and testing the LOCK & OPEN.