As long as you have a key for all the different locks, it is an easy do it yourself.
Take off the parts at the back of the lock tumblers, stick the key in the lock, turn & pull the key and the lock tumbler will come out the handle.
If you do not have the key, you can not turn the lock and it will become more difficult to get out the lock tumblers. If you have the lock tumblers out, you have to take care only to get the key out when you are sure the loose inserts of the lock will not be lost...
If you have the lock tumblers out, you better clean & oil/grease them before you put them back in.
with a minor 600+k