Mainspring

[Clockwatching247]

Hi everyone, I’m trying to dissemble this clock (see photo) how do I let down the main spring when I can’t 

a) remove the movement from the case without taking off the back plate 

b) access the click

Many thanks 

[oldhippy]

You need to remove the pin that I can see red circle, there might be another on the opposite side. Then push the whole thing out. You should see screws that you need to unscrew, the drum will come away which will leave you with the dial and movement.  You will need to remove the hands then you can remove the movement, some movements will be held by pins some are held in place by folded or twisted tabs. 

The spring by its looks doesn't have much power on it. With the movement free you should be able to see the click and its spring, put the key on and hold the key as if you are going to wind it and with a screwdriver move the click away from the ratchet and let the spring down. From what I see you have parts that are not in place these are the cup screw that holds the balance and it also holds the regulator which is on the movement.  

Edited January 5, 2023 by oldhippy

[Clockwatching247]

Thank you so much-I’ll let you know how I get on 

[Clockwatching247]

Hi, I removed the pins but the tube holding the movement still won’t slide out. There are three grub screws (see photo-circled in red) but I can even loosen them!

 

Many thanks 

[oldhippy]

Have you tried a little oil on the screws? 

[Clockwatching247]

Hi tried oil, just can’t move the screws-any further ideas? Thank you

[oldhippy]

Don't the screws have decent slots in there heads for a good screwdriver? You could try WD40.  The only other way I can think of is to drill them out. 

[Clockwatching247]

No head on the screws -very hard to access them thanks

[oldhippy]

The only answer is to drill them out. 

[transporter]

ive had one like this, 

you need to use a drift to tap the drum out, some are so tight its a joke, the 3 screws you have i believe are there to hold the movement onto the drum, you will be able to access them once the drum is removed. 

My advise would be to mark the drum and the case so you put it back in the same orientation as it cam out due to the tightness of removal

[oldhippy]

As I understand it the problem is not being able to remove the screws, the drum is out of the case.  

 

 

 

 

 

[Martyd]

Hi 

What is the piece circled in red, looks like a thumb screw from the angle i can see !!

[oldhippy]

That is the hand set.

[watchweasol]

Hi sometimes with these barrel/drum clocks the whole drum has to be removed and as transporter said they have to be drifted out carefully. After removing the fixing pin in the case side , mark the position of the drum and then use a wood drift to push out the drum. It could be corrosion between the wood and the brass liner/drum that’s holding it. When out you can gain access to the movement screws around the bezel and remove the drum sleeve from the clock, you will then see how to let down the main spring