Mechanical Cleaning - Thomas Tomosy

Tomosy includes this section in his first volume of fundamental techniques, though he also provides many examples of shutter disassembly:

Mechanical Cleaning

So how do you clean the mechanism? Unless the mechainism is badly contaminatd or corroded, you don't have to pull the parts. What you do is just squirt a few drops of lighter fluid onto the parts (shafts, bushings, gears, escapements, etc.) and work the mechnism. Cock and release it a few times, set the camera to one second and do it again, the blow the solvent out. Use the minimum amount of solvent and make sure that it doesn't get into the viewfinder. It it does, you will have to disassemble and clean the obtics. Do this treatment fast and only once. That way the grease stays in the gears, but the dry oil will be washed out. Warm up the camera gently with a hair dryer to help evaporate the solvent.

Thomas Tomosy, a European trained camera technician,
has published four books on camera maintenance and restoration