How to service door locks - Russwin Model 68
Description to follow
1 First off, look at the picture closely. there is a wire spring just atop the core.
That spring is retaining a clip that is holding the second knob in place. Use a flat screwdriver to push the clip forward and the knob goes off.
2 Now that the knob is off, take notice of the two screws holding the mecanism together... Don't unscrew them yet! Look at picture 4!!
Unless you feel like putting back springs in place and/or the mecanism altogether, use something to hold the mecanism together as when you remove the screws, it WILL pop out.
3 Now that the mecanism is fastened, remove the two screws. You will notice there is a clip, similar to the one holding the first knob, that is holding the second knob. It was also held in place by the two screws that hold the mecanism.
Pull it aside with the screwdriver until the knob comes off. this one is not held by a spring, so don't go all out on it.
4 View of the mecanism held together by a vice.
5 Now, the knob holding the lock is free. Remove all components in order until you reach picture 6.
6 Remove the giant circlip gently and remove what it held in place. Be carefull, the small rod within may fall: remove it horizontally.
7 You can now access the cylinder freely.
8 Service the lock as needed
9 Reverse the steps to rebuild it.
All set!
xeo: you do whatever the lock wants