How to remove stuck roll pin in tooth bar???

Blackgreyhounds · Mar 31, 2020

Can anyone help me figure out how to get this busted roll pin out of my tooth bar so I can replace the tooth? It's 20 y.o. so it must be super rusted on. I tried hammer and punch, but that didn't work, partly because I can't get a straight shot because of the teeth on either side. I tried drilling it out but just tore up the standard drill bit. Is there some type of drill bit for hardened steel? I tried driving a sheet metal screw into it to lever it out and that just stripped the threads off the screw. So... any other ideas would be appreciated. Thanks.

Peter 315 · Mar 31, 2020

Heat more Heat and try the hammer and punch again.....

oosik · Mar 31, 2020

What's wrong with that tooth. Still looks to be in pretty good shape. Otherwise - hit the pin/tooth with a torch. I'd use a hand propane torch. It just might break the rust loose. Something about that pic just doesn't look right. I guess it's that I've never seen a tooth retaining pin that far forward on a removable tooth. Must be one heck of a base tooth underneath.

Peter 315 · Mar 31, 2020

oosik said:
What's wrong with that tooth. Still looks to be in pretty good shape. Otherwise - hit the pin/tooth with a torch. I'd use a hand propane torch. It just might break the rust loose. Something about that pic just doesn't look right. I guess it's that I've never seen a tooth retaining pin that far forward on a removable tooth. Must be one heck of a base tooth underneath.

That's the shank the tooth fell off I'm guessing.....

jeff9366 · Mar 31, 2020

Spray "Blaster" will dissolve or loosen rust with 48 hours of soak. Spray several times during soak. Blaster is all solvent.

Make sure the pin punch is the correct diameter at the tip.

CADplans · Mar 31, 2020

The pin is steel, as steel rusts it increases in volume.

The increase in volume of the pin really locks the pin in place,,

Lets see,, the original tooth lasted twenty years,,
Where will you be twenty years from now, when the tooth needs replaced again?

Probably you will not be worrying a lot about that toothbar,, so, that offers another fix.
Simply weld the new tooth to the holder, forget about pinning the tooth in place.

That pin system is for people that wear out teeth every 2-3 years,,

Weld it,, and enjoy all the skin that will be saved on your knuckles, not trying to fight that pin.

bigtiller · Mar 31, 2020

There's a tool for that.

Amazon.com: Exchange Bucket Tooth Tool Pin Device for Caterpillar John Deere Bobcat Komatsu Hitachi Volvo Kubota Kobelco Case Excavator in USA: Industrial & Scientific

Industrial Toys · Mar 31, 2020

I can't make sense of the picture either.

My bucket pins are in rubber I think.

I would use a punch with a hydraulic cylinder. Like an Enerpac thingie.