Not necessary to disassemble the gun to clean and lube. You’ll most likely be drifting pins and turning screws that haven’t been touched in 70 years. Just wipe it down, run a lightly oiled patch thru the barrel, lightly clean the wood and you’ll be good to go.
Overall, yes - BUT, to get at that O-ring in the tube to replace (they get dry from no lube and either crack, break up or jam up the action a bit) you gotta remove stuff..
