pin/bushing info needed for HD3 loader

I did some more poking around and it doesn't look good...about half of the pins are welded on one side rather than having a rolled pin or bolt on both sides of the pin. The bushings, from what I can tell are more of a sleeve that is welded in place on both sides so it can't turn. The pins are indeed hardened steel but don't look like they are anything special. I have about 16 pin/bushing that need repair. I really don't think the sleeves are hardened steel. They look exactly like the sleeves that were on an old 1963 Case 310 I used to have. Although it is a lot of work, it looks like I need to cut away the weld and remove each pin. Then purchase some new rolled stock that is slightly larger in size and have the sleeves/bushings reamed for the oversize stock. If this machine was going to work in a quarry full-time, I wouldn't even consider reaming the bushings/sleeves because the wall thickness would be less than original. However, for the little I use it, reaming the bushings/sleeves should last my lifetime. If the bushings/sleeves are hardened steel and/or I can't ream them, then I'll have to cut the welds on both sides of the sleeve to remove them and then mate a new sleeve to a new pin.

Edited by donw - 05 Oct 2010 at 4:39am

Check Mcmaster Carr for bushings.

Wow! Lots of responses. I have one pin that is broken in half and can be removed easily enough. I'll take it out and see what's left of the bushing and go from there. I'll post pictures of what I find. It seems the consensus is that unless the bushing is completely worn away and the hole egged out, just replacing rolled stock should fix things nicely. I've also wondered how much work would be involved with buying oversize rolled stock and then reaming the holes larger.
Don

Thanks Coke. Is that in all pivot points or just certian ones? Like the bucket that has pressed in pins, as opposed to the arms? 

So, I am to believe that my 1961 H3 has bushings in the loader frame?

Edited by Kipn - 03 Oct 2010 at 10:15am

Should be able to remove the linkages and order bulk stock for pins, I would order rough dimension hot rolled or 304 stainless and have it final machined to size, as for bushings, ordering round stock bronze from a machine supply house as Online metals:http: //www.onlinemetals.com/ ( they have bearing bronze tube) and have a machine shop bore the arms for bushings then make your own.  Stick to common dimensions or refab the OE pin size and adapt bushings to the crawler.

I was thinking the same thing last night. ALL my pivot points are worn and sloppy. There is no bushing in them to replace. The pins would be a bear to get off and replace. Thought of weld build up and grinding but I don't think that I can grind it round. When you find out how to tighten things up, let me know.

Now that the engine is rebuilt, the only thing left to do to my machine is rebuild or change all the pins and/or bushings for the loader arms. They are very sloppy and completely worn out. I've never read anything on replacing/rebuilding these so I'm looking for opinions and information in general regarding what the process is and if anyone knows if aftermarket or original pins and bushings are available.

At first glance it looks like if both the pins and bushings need to be replaced, then I will need to cut all the weld and remove the bushings. That is a lot of work! This is my starting point and welcome any input. This is a 1963 HD3.

Don