Ruhla chronograph overhaul.

[RyanGreerMcGilloway]

Hi all,

 

i Brought another watch a few weeks ago and it doesn’t seem to want to work no matter what.

 

ive took off apart the watch movement and balance and oiled and put it back together again.  There’s no sticky hair springs, no magnatisim. It’s just whenever I move the watch and gravity applies to it, it stops until I have to tap it again. The balance does run freely when sat still for a while and nothing seems to be broken.

 

Can anyone advise please.

 

Its an odd chronograph, the top pusher resets it back to 12 and the bottom holds the second hand until released and then it carries on. 

 

 

 

[Jon]

There may be excessive side shake of one or more of the wheels/pivots, as the pivots are sitting in un-jewelled holes and for a watch this age, these holes might need to be re bushed, because they sometimes wear an oval, which forces the wheels into the pinions too much or vice versa. It might also be a worn balance staff pivot.

Does the watch run when dial up and dial down? If it is turned crown up or down, is that when it stops?

[rodabod]

Has someone punched the pallet cock at some point? They are sometime slightly adjustable on these pin pallet watches.

[WatchMaker]

I know you've inspected the parts but maybe inspect the balance staff again super carefully. It's very easy for this to be damaged in watches without shock protection which leads to the only-runs-in-certain-positions symptoms you describe.