[bmrich]

I have a 1989 Aircap 21 inch snow thrower that needs the rubber spirals for the auger replaced. Each spiral has about 6 screws and a pin like mounting piece. The screws come out easily but I haven't figured out how to remove the pin. I've tried (gently) to pry it out but it doesn't want to move and I don't want to break something. I would appreciate any information as to its removal.

[KISS]

Look on this page http://www.nuttybolts.com/catalog/index.php?cPath=1733 and see if you can identify it as a roll pin (spring pin), dowel pin or cotter pin?

Also, if you can post a full model #.

Posting a picture would be great too. Use go advanced/manage attachments.

[KISS]

Based on this, they could be riveted: Similar questions with less expensive options replacing snow blower auger impeller paddles repair shop

That would make a lot more sense to use a couple of rivets and some screws.

[bmrich]

It is model #PJ602/8431. The picture is the front side. The back does look as though it might be a rivet. If so, how does one remove a rivet?

[KISS]

Yep, looks like a rivet. In fact, it almost looks like the classic Pop Rivet.

They don't remove well. Or should I say, they are time consuming to remove.

First material, Aluminum, steel or stainless?

My guess, Aluminum.

They come in standard sizes 1/8" is a common diameter. These are designed to go into a 1/8" hole.

They are available in various lengths.

Take a look here: Blind POP Rivets | Emhart.com

The tool to set them is fairly inexpensive and you can get small packs at a local hardware store.

What isn't shown is a precision washer that CAN be used for thin materials.

In general, they are drilled out with a drill slightly smaller than the hole that they are inserted into.

Sometimes they drill cleanly and sometimes they do not.

So, cutting, sawing and a Dremel tool with some Vise grips can be used.

This is a poor man's way: YouTube - Pop Rivet Removal

This looks too easy: http://www.youtube.com/watch?v=LDQ-wnACGGs

[bmrich]

Thanks for the advice. I'll give the drill method a try. I guess my only question now is: why was a rivet even used on an item that will eventually need replaced? Especially given that it also had the self tapping screws. Seems like overkill.

[crigby]

Hi,
The rivet was used to try to prevent mechanical loosening of the screws during use. It can also be a quick fastening technique for assembly during manufacture.
Peace,
Clarke