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

[Blackgreyhounds]

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]

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

 

[oosik]

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]

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]

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]

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]

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]

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.

 

[WranglerX]

First thing is if you have flared the end of pin it's never going to come out....

Grind pin flush with surface and use proper diameter punch...

Dale

 

[rangerfredbob]

I second the grinding off one end of the pin before trying again, the taper is not helping, and grinding it flush will keep it from flaring again. Combine that with some solvent, lube, some heat and an appropriately sized punch and you should have success.

 

[CoyPatton]

I second the grinding off one end of the pin before trying again, the taper is not helping, and grinding it flush will keep it from flaring again. Combine that with some solvent, lube, some heat and an appropriately sized punch and you should have success.

 

[kthompson]

First thing is if you have flared the end of pin it's never going to come out....

Grind pin flush with surface and use proper diameter punch...

Dale

Have never seen punches with the center like these. Who sells those? With right drill bit, not high speed steel maybe cobalt. Might need to drill in steps. I also believe the grinding flush and proper center punch will work.

 

[aczlan]

Have never seen punches with the center like these. Who sells those?

Amazon, eBay, most likely your local tool trucks.
Search for roll pin punch and you will find many of them.

Aaron Z

 

[Peter 315]

Have never seen punches with the center like these. Who sells those? With right drill bit, not high speed steel maybe cobalt. Might need to drill in steps. I also believe the grinding flush and proper center punch will work.

Grace tools sells them.......Gunsmith | Grace USA

 

[Blackgreyhounds]

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.

Thanks. I will try more heat tomorrow. I put a little hand torch on it today, but the canister was pretty weak. I'll try a fresh one.
@oosik - The actual tooth is missing. The pin sheared and it was lost. The part you are seeing goes inside the replacement tooth and holds it.

 

[WranglerX]

I found then with GOOGLE IMAGES search using keywords " roll pin punches....

Or ...

https://www.amazon.com/s?k=roll+pin+punches&ref=nb_sb_noss_1

Dale

 

[Blackgreyhounds]

Thanks everyone for the input. I'll grind it flush and get the proper punch.
@Oosik here' the actual replacment tooth. Ignore the bolt, it will get a roll pin, but you get the idea.

 

[Tractor Seabee]

Like he said there is not room between teeth to get a hammer and punch in a straight line. You need a short punch and a hydraulic ram (Porta-Power) to punch straight. The pins are hollow so get all the rust and dirt out of the inside first. That will allow the rust busting process work better. Take a cutting torch with 00 tip and burn part of it out from the inside after you can see through it. That will let it shrink some when punching. A little slice in the existing won't hurt anything. Just clean the hole out to clean metal before installing the new one.

Ron