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By nevenbekriev · Posted
According to my own understanding of the matter, this watch has only one subdial and it is of the minute register. And, it has central chrono hand, which is not on subdial. So, You problem is the chrono hand... The most probable reason is that the hand is not firmly seated on the shaft. This is a regular problem of such hands as the shock when resetting is huge so the friction between the shaft and the hand's bush sometimes gives and the hand's position on the shaft changes. The hand must be pressed really tight. If the hole of the bush is enlarged, it is possible to shrink it. The best way to do it is in a lathe's collet. In the service centers they often don't reuse the hands, but rather replace them in order to avoid such problem. Another reason may be the bush is loose in the hand. And, of course, the movement may be out of order. -
The first place I looked, but all the tools seem to be for tubes with an internal spline. I guess I could just ram one in and turn 🥴 Which is why I asked. I'm pretty good at finding tech sheets etc, but so far have been unable to find anything on Rolex case part numbers. (I tried " ROL CS#7935" on Jules Borel, but it only gave the crystal) -
So if you've just bought a used movement in unknown condition then I think it needs a service. -
I haven't built the movement. The minute register is working fine. As I said, the chronograph subdial hand -
Yes basically that's it but there specific tools. https://www.cousinsuk.com/search?searchTerm=pendant tube tool All the usual places don't show any details for the 7935.
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