doublegunshop.com - home Forums General Discussion DoubleGun BBS @ doublegunshop.com hinge pin caps in boxlocks

Anyone know how these are removed when they are not slotted and screwed in? I'm presuming they are pressed in and then engraved. I'm also thinking that there must be a way to pop them out but I've never heard of anyone doing it. Obviously they must be removed to fit a new hinge pin.
npm

The pin must be drilled with a smaller diameter, in order to be removed. Then it can be replaced by a new one same diameter . If there is still some gap ,a bigger diameter have to be bored for a bigger pin, if necessary.
I did not see picture of you pin, I hope I understood the description.

I don't know how all are done, but I have a VL&D Francotte circa 1920's and the caps are threaded and screwed into place although they are not slotted. Had one come loose...screwed it back into place with a dab of Loc-Tite. I'll leave it to the gunsmith to soak out the Loc-Tite and unscrew it should removal ever be necessary. I assume that to loosen and remove a cap in the first place you'd need to apply pressure on the cap and unscrew it like the lid of a jar. Perhaps there is a gunsmith here who can explain the exact process.

I have seen them with threads and no screw slot. Others, like the Fox, do not have caps, what you see is the end of the hnge pin. Depends on the make of the gun.

The Browning BSS has caps with no slot. When I ordered new caps, they came with slots, threaded and over length. If I wanted to remove one and I had a replacement in hand, I'd TIG weld on a piece of square or hex stock and wind it out with a wrench.

Perhaps I wasn't clear. I have replaced hinge pins where the caps were threaded and slotted. The procedure was to remove cocking levers, remove cap, remove small screw that penetrates the hinge pin from the knuckle, unscrew hinge pin. Duplicate hinge pin with same threads, shoulders etc. but of course larger diameter at it's bearing surface. How much larger to make it is easily determined by measuring how much the gun is "off face". But I have never worked on a gun with unslotted caps. I was assuming they were pressed in. Obviously wrong. If threaded perhaps they are slotted on the inside face? If the hinge pin is slotted, well, pretty good evidence that it is screwed into the frame. I'm hoping that perhaps someone who has replaced a hinge pin on one of these guns will share his trade secrets.
npm

NPM,
Again, on the Browning BSS, the caps are not slotted on the finished gun, they are engraved with the usual patterns. The new factory threaded caps come overlength with slots. Once the cap is secured, the overlength is milled/filed off leaving no slot to remove it. If it has to be removed, I would simply TIG a piece of square bar onto the cap face and wind it out, then replace it with a new cap.