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Ratchet Wheel Issues

LeCorbusier
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LeCorbusier WRT Addict

LeCorbusier

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I now have two separate movements where I cant seem to remove the ratchet wheel from the arbour ... both are solid. I wondered what my options might be for removal  - I am concerned about ruining the screw head or shearing it through too much force. Any suggestions gatefully received. On one I have to date tried using the tipof a soldering iron to introduce heat and left it soaking in both isopropyl and an easing oil each for a few days to no avail.

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mikepilk Distinguished Member

mikepilk

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I have come across ratchet wheel screws which are reverse threaded, like the crown wheel screws. 

It's worth trying to turn the screws a fraction in the opposite direction you are trying to go, as it might break the stiction - and you might discover they are reverse threaded.

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LeCorbusier WRT Addict

LeCorbusier

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One movement is an AS 984 (so I assume not reverse threaded - the one I applied heat to and soaked is a Trench Watch movement so will see if that is reverse threaded.

The trench watch movement was indeed reverse threaded ... made that error before so feel a bit of a numpty .. the AS 984 wouldn't be a reverse thread would it?

 

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Marc Distinguished Member

Marc

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10 minutes ago, LeCorbusier said:

One movement is an AS 984 (so I assume not reverse threaded

I just checked on a 984 in my parts bin. The ratchet wheel/arbor screw IS reverse or left hand threaded, so clockwise to undo.

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Nucejoe Distinguished Member

Nucejoe

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 Sooner or later I might be called Mr Coca- Cola here, for having prescribed Coca-Cola as penetrating solution for loosening screws all along. 

Give the ratchet screw a 48hr soak in Coca-Cola، try loosening before the coke dries.

Rgds

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mikepilk Distinguished Member

mikepilk

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11 minutes ago, Nucejoe said:

 Sooner or later I might be called Mr Coca- Cola here, for having prescribed Coca-Cola as penetrating solution for loosening screws all along. 

Give the ratchet screw a 48hr soak in Coca-Cola، try loosening before the coke dries.

Rgds

I've never tried it as a penetrating solution, I must give it a go. I just not keen on drinking too much of the stuff - your nuts might fall off 🤣

I'll stick to beer and whisky 🤪

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