Why is one side of my working M&C No cylinder?
It happens occasionally that one side of a M&C Cylinder no longer functions. Fortunately, this is usually easy to fix, and the cylinder doesn't need to be replaced.
What causes one side to stop working?
In almost all cases it turns out that there a small animal or dirt in the cylinder has crept. When turning the key, it is pressed flat against the coupling, causing the other side to block and no longer turn. This sounds annoying, but can be remedied quickly by opening and cleaning the cylinder.
How do you solve this problem yourself?
In the video below we show you step-by-step how to open and clean the cylinder.
Note: Work calmly and carefully to avoid damaging any parts.
Remove the cylinder from the door first?
To clean it, you need to remove the cylinder from the lock. On the page below, we show you exactly how to safely remove a cylinder from a door:
➤ View the step-by-step explanation here
Tip: Immediately after cleaning, lubricate the cylinder with the service pen – this keeps the lock working smoothly and significantly extends its lifespan.
Are you unable to do this or do you not want to do it yourself?
You are not alone. We offer a cleaning service for M&C cylindersThis is how your cylinder is professionally cleaned and tested.
- ️ Professional cleaning — €18 per cylinder
- (I.e. Not resolved? Email us with your order number + photo/video
- 🛡️ 5 year warranty on all M&C cylinders
Want to repair your cylinder immediately and keep it running smoothly?
Order our service pen — suitable for years of maintenance.