I have said on here for amateurs not to take the old '94's apart to clean. This results in being told I have no mechanical ability!
But I have heard gunsmiths tell of how many old 94 Winchesters they have received, along with a shoe box of parts! I have also assisted a gunsmith in putting them back together.
I have the best proof anyone could get, that it is not necessary to take a 94 apart to clean. I have a 94 in 30-30 made in 1912 and purchased new by a ranching family. It spent its first 80 years of its life as a working rifle on the ranch, and I bought it a couple of years ago from the last extended member of the ranching family. I also got with it a very well used scabbard.
The stock of the rifle shows lots of use, there is virtually no bluing left, but there is also no rust. The bore was a bit dark, but it cleaned up to shiny and is an excellent shooter, with the action as smooth as any 94.
And here is my point.
Every screw the rifle ever had is still in place and not a screw has any mark or mar on the slot, from being taken out with farm type screw drivers. A larger screw on the tang has a mark on it, as it looks like the rifle once had a tang sight.
To me, this is proof the rifle was never taken apart. It obviously must have been kept oiled and looked after, as it didn't collect rust, anywhere.