Remington Rolling Block No. 4 .22 Single Shot - Receiver Information

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Yulisius

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Hey guys, I recently restored a Remington No. 4 Rolling Block Boys Rifle. When I took it out shooting (test after restoration), the round did not fire and there was no indentation at all in the rim of the round. Either the hammer is not hitting the firing pin hard enough, or the firing pin is too worn. I am hoping that someone on CGN either has some information on this rifle (exploded view of receiver / place to get parts / dimensions of components such as firing pin / etc...). If so, and if you are willing to help me out, either reply here or send me a PM.

I have done some searching online and have found pretty much no information on this rifle, and it seems that any place that sells parts for a rifle like this are in the US and are unwilling/unable to export.

For photos, feel free to go through this post:

http://www.canadiangunnutz.com/forum/showthread.php/897794-Old-22-Needs-Some-TLC-Any-Tips

Thanks ahead of time if you are able to help out.
 
Firing pin too worn? How worn is it? Did you sand it when the whole project was underway?
Pictures?

It should be free to move in it's hole through the breech, an you should be able to press it forward with your thumb and have around the thickness of a cartridge rim worth of pin sticking out the hole in the face of the block.

The hammer is able to drop cleanly upon the pin?

These are dead simple machines, with almost nothing in the way of moving parts, but a twenty second troubleshooting job in person, involves a bunch of Q and A of doing so over in writing.

If the firing pin is free to move, then look at the hammer for it hitting the pin cleanly, and that it can fall without interference. The Hammer spring is properly installed? The firing pin is properly installed.

If the firing pin will not move forward with thumb pressure, then you either have a dent or burr on the back end that limits travel, or you have mung in front of the pin in the block.

Cheers
Trev
 
trevj said:
Firing pin too worn? How worn is it? Did you sand it when the whole project was underway?
Pictures?

It should be free to move in it's hole through the breech, an you should be able to press it forward with your thumb and have around the thickness of a cartridge rim worth of pin sticking out the hole in the face of the block.

The hammer is able to drop cleanly upon the pin?

These are dead simple machines, with almost nothing in the way of moving parts, but a twenty second troubleshooting job in person, involves a bunch of Q and A of doing so over in writing.

If the firing pin is free to move, then look at the hammer for it hitting the pin cleanly, and that it can fall without interference. The Hammer spring is properly installed? The firing pin is properly installed.

If the firing pin will not move forward with thumb pressure, then you either have a dent or burr on the back end that limits travel, or you have mung in front of the pin in the block.

Cheers
Trev
Click to expand...

Firing pin moves freely back and forth. I think the primary issue is the hammer not hitting the pin hard enough, and therefore maybe the spring is not properly in place. This is why I am looking for an exploded view of the receiver. No, I did not sand the firing pin at all, but maybe over the years the firearm was dry fired too often? This I can't actually confirm.

Thanks,

Josh
 
Yulisius said:
Firing pin moves freely back and forth. I think the primary issue is the hammer not hitting the pin hard enough, and therefore maybe the spring is not properly in place. This is why I am looking for an exploded view of the receiver. No, I did not sand the firing pin at all, but maybe over the years the firearm was dry fired too often? This I can't actually confirm.

Thanks,

Josh
Click to expand...

Press the firing pin as far forward as it will go with your finger, and post a picture of the face of the breech block with the pin protruding.

Take the stock off and have a good look at the way the mainspring is installed, and how it acts on the hammer. The hammer should be able to fall freely to rest against the firing pin, when the mainspring is removed. It may be dragging against the breech block as it falls, or it or the mainspring, may be interfered with by the stock, or a screw that is in the wrong place if there were any different length screws involved.
Used the correct pivot pin in the correct location? It can make a difference.

Hammer should fall with a lively snap, and not have to shove the breech block aside as it does so.

Everything should move freely and not need to be forced in any direction to make it all work.

Check that the mainspring is the correct way up, and the spring which acts on the breech block is properly installed.

There are what, six or so moving parts, including the springs? Start poking around and see what looks like it does not work well.

Cheers
Trev
 
I'll play around with it today. When I was putting all the components back in the receiver, I thought I placed the spring the right way. After cocking the hammer many times it appeared things were OK. However, the rolling block is quite loose, as it does not necessarily stay forward, so maybe I do have a spring in wrong. Again, I will play with it today and see what I can determine.
 
Take a good look at the spring, number 27 in the picture in the Stevespages link.
The block should feel as if it is held both forward and back, when it is moved from one position to the other.

Aside from that, it's going to be pretty much up to you to make a determination from there.

Cheers
Trev
 
Well, dumb-dumb me figured out the issue. If I just looked at my dissassembly photos a bit closer, I would have noticed that I re-assembled the receiver with the leaf-spring on upside down... Fixed that, now she has got some force in the hammer and the rolling block is staying forward. Time to go test fire 'er.
 
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