SignalTraffic Forums

by **coyttl** on Mon Jan 21, 2013 4:27 pm

(If I had posted this subject 10 years ago, I'd be asking about pinball games. Scary..)

Anyways, I have a couple signals with these types of pins -

What's the best way in removing them? And can they be re-inserted? Or once they're out they have to be replaced by new ones? I tried searching, but I'm not even sure of the name of this type. :doh:

--Mike.

by **BigTbird1974** on Mon Jan 21, 2013 4:34 pm

They're called "roll pins" and are still a commonly available part. Usually they can be carefully pressed or pounded out with a drift (etc) and they should be perfectly reusable afterward if not damaged.

Hope this helps! :good:

by **vaughnsimon** on Mon Jan 21, 2013 4:36 pm

Ideally, use a drift punch of the proper size. ( a flat-tipped punch) and tap as gently as possible. If you have a short enough punch, you can often apply the punch through the hinge-hole of the door, and tap the pin just far enough to release the door. Then you just tap the pin back into place to re-hang the door.

The pin should be reusable, but it is just a common split pin available at any decent hardware store.

by **jab8356** on Mon Jan 21, 2013 4:38 pm

When I used to work at the machine shop, I took orders for a pin remover that I came up with. It was 2 pieces of steel with threaded rod on each side holding them together with some space in between and then a small machine screw in the center which is used to push the pin out of the hinge. Unfortunately, I don't have access to the shop anymore and cannot make them anymore.

I've come across two types of these pins. One, which looks like yours, is solid with a slit and they can usually be reused. The other type was thin material rolled up to form a pin and those usually would not survive being pushed out to be able to be used again.

Pounding out these pins can result in the hinge breaking off the casting.

by **coyttl** on Mon Jan 21, 2013 4:42 pm

Very easy then - Thanks guys. Sounds like I'll have to be careful in removing, but then can replace them later.

-Mike.

by **2070** on Mon Jan 21, 2013 5:04 pm

3/16" is the size you want.

I use a standard side hammer.

by **gwlreno** on Mon Jan 21, 2013 5:20 pm

jab8356 wrote:When I used to work at the machine shop, I took orders for a pin remover that I came up with. It was 2 pieces of steel with threaded rod on each side holding them together with some space in between and then a small machine screw in the center which is used to push the pin out of the hinge. Unfortunately, I don't have access to the shop anymore and cannot make them anymore.

I've come across two types of these pins. One, which looks like yours, is solid with a slit and they can usually be reused. The other type was thin material rolled up to form a pin and those usually would not survive being pushed out to be able to be used again.

Pounding out these pins can result in the hinge breaking off the casting.

Jerry,

By any chance do you have any kind of drawing of that pin remover? Even a rough sketch would do. Also, what kind of steel would be strong enough not to bend? I think the metal they sell at HD and Lowes is too soft and would bend pretty easily.

Thanks!

by **jab8356** on Mon Jan 21, 2013 6:32 pm

gwlreno wrote:Jerry,

By any chance do you have any kind of drawing of that pin remover? Even a rough sketch would do. Also, what kind of steel would be strong enough not to bend? I think the metal they sell at HD and Lowes is too soft and would bend pretty easily.

Thanks!

Here is a picture and I will describe it to you.

The 2 bars are 1/2 x 1/2 x 2 5/8. They are plain old cold roll steel. The threaded rods are 5/16-18. The bottom bar has threaded holes for the threaded rods and the top are clearance holes with nuts on top. There are 2 tapped holes near the center of the top bar. One is 10-32 and the other is 8-32. This is because there are some larger pins and some smaller. The bottom bar has two clearance holes near the center for the pin to pass thru as it is being pushed out.

If you have any questions, just ask. I will answer if I can.

by **gwlreno** on Mon Jan 21, 2013 6:56 pm

That's great! Thanks Jerry!

I don't see why I can't make one of those.

I'll holler if I have any problems.

by **jab8356** on Mon Jan 21, 2013 6:59 pm

That version won't work on CH type M doors. I had to alter one so the 1/2 bar is thinner in the middle and then it fits between the door and the body of the signal to get the pin out.

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