Hmm. Sounds like you tried to "fix" it yourself or was just plain curious. There are quit a few manufacturers and they all assemble their locks differently. Without getting into a lenghtly explanation, my best advice is to have a locksmith do it for you. They will have the pertinant info on hand.
A mortise Lock is most commonly used on doors. It requires a "pocket" or hole to be cut in the door, and a plate to be places in the frame that the door will attach to when closed.
A Mortise Lock is unique in that when it is fitted by a locksmith, a small section - Mortise is cut through the door frame to connect the lock. The lock is different to others in that a homeowner cannot fit it as one requires wood making knowledge and tools and it is labour intensive.
A Mortise Cylinder (also mortice lock in English) is one that requires a pocket-the mortise-to be cut into the door or piece of furniture into which the lock is to be fitted. In most parts of the world, mortise locks are generally found on older buildings constructed before the advent of bored cylindrical locks, but they have recently become more common in commercial and upmarket residential construction in the United States. They are widely used on all ages of domestic properties in Europe.
A Mortise Cylinder (also mortice lock in English) is one that requires a pocket-the mortise-to be cut into the door or piece of furniture into which the lock is to be fitted. In most parts of the world, mortise locks are generally found on older buildings constructed before the advent of bored cylindrical locks, but they have recently become more common in commercial and upmarket residential construction in the United States. They are widely used on all ages of domestic properties in Europe.
You turn a mortise cylinder lock slightly before removing to release it from the lock housing. There is an obstruction in the lock design to keep the cylinder more secure in the lock. After you remove the holding screw from the lock body you can turn the cylinder slightly to release it and remove from the lock housing. Not all mortise cylinders are designed this way. Some of the cylinders unscrew from the lock housing after releasing the cylinder retaining screw.
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Insert key in the door lock and turn to unlock the door.
This is done by removing the trim on the inside of the door. Then it is neccessary to remove the No1 service hole cover. Then one removes the door lock protector, the door handle protector, and detatch the control cable from the outside door handle. You then remove the door lock wire harness loops, and remove the lock from the door. Detach the old cable and reattach the new. and reverse the steps you just followed to reassemble the door.
spray with WD40 if that doesn't help replace the door lock
I've had to open a few when people lose their keys. Generally it is a 3 or 5 lever lock and by checking the workings on another-that's it the one you keep in the back of the van- you can sort out where to drill through the door and lock to get access to the levers, which you can then hook up with a screwdriver. Another way is to cut through the stile and just allow the door to open
Via the Autozone website, it depends. There are three:Dorman/Door Lock Actuator, Part Number: 746-260, Trunk lock actuator; Tailgate $89.99Dorman/Door Lock Actuator, Part Number: 931-002, Door lock actuator; Front - Passenger side $125.99Dorman/Door Lock Actuator, Part Number: 931-001, Door lock actuator; Front - Driver side $114.99You may be able to locate cheaper parts at a local parts salvage yard. The reliability of such will not be warrantied however.
There is a paddle shaped connecting rod going from the door lock barrel to the locking mechanism that opens/locks the door. These seem to break after a while, you can get replacement part cheaply enough (€10 from my VW dealer) but it is tricky to reassemble the mechanism as there is a spring in it (I still havent managed to fix mine!)