A buddy dropped off a SW M10 with 5 screws. He was complaining of a 'clicky' or 'catchy' trigger.
Photo shows level of crud inside. The LH sides were just as nasty as the RH sides.
Poor video of it all taken apart:
Nothing in there was wet. What looks like oil or grease is really dried tar made up of burnt powder, cleaning solvents and old oil. A good soaking in kerosene, then acetone scrubbing and its good as new.
Thing has not been deep cleaned for about 45 years. It is well designed and well made. I was happy to take it apart.
Anyhow, got it all apart down to impossibly small plungers and springs. All polished up and dry lubed with graphite.
Also cleaned up the frame pins and any holes for screws or pins or plunger assemblies.
A nice, all original Smith. Even the grips are serialized to the frame.
Note: The front screw in the trigger guard secures a plunger and spring assembly, not just a spring as in later models. These come out the screw hole easily enough using a fine piano wire with a hooked tip. Don't try to push it out...its a spring and will bind up on the screw threads...then get away from you when the coil slips off the thread. You will never find it unless you work inside a bag (I work inside a bag with a magnetic surface under it).