Revolver Cleaning
Mr. Magnum,
Complete dissassembly really depends on your environment, the material of the revolver, how it is used and how the revolver is stored.
If your gun goes from a dehumidified gun safe to the range, cleaned and promptly returned, than you can probably go longer than most on the complete dissasssembly.
I recommend to my regulars to have their carry revolvers completely dissassembled once a year with detailed cleanings semi-annually.
Hunting revolvers should be done at the start and end of the season.
A lot of the revolvers I see are daily to occasional carry guns so I usually see rust forming inside the frame where the yoke pivots and on the hammer's pivot point inside the frame. I once found 10 strands of cat hair in one gun!
I wouldn't recommend spraying a lot of lubricant into these areas because it will attact dirt and general gunk into you firearm. Just disassemble, clean, wipe down with a light lube. It's a very easy process and if you do it once a year, you should be fine.
Have a great day!