Only remove the key from the lock once the retaining screw is secured back into place.
													
																	How to change a lock upvc door. 
									
	
		
	
																	A few simple steps and tips for changing a upvc door lock in london 1. 
																	A multi point locking mechanism this is normally a strip down the edge of the door with a few cases that sit inside. 
																	Door locks and mechanisms can be purchased from upvc spares 4 repairs. 
																	All you need to replace your old upvc mechanism with a new central gearbox is a screw driver or drill and a spare 5 minutes. 
															
													
									
	
		
	
																	A video tutorial on how to replace a full length door lock on a upvc or composite door. 
																	As long as you have selected the correct size central gearbox you will have no difficulty in changing it over.