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Bucket Cylinder Pin Repair
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<blockquote data-quote="SkidRoe" data-source="post: 61146" data-attributes="member: 3290"><p>Here is what I fixed today, for anybody who is interested:</p><p>The rod end pin has had some slop in it ever since picked up the machine from my dad. I have been greasing it regularily to try and keep it going, but I knew that I was going to have to do something someday.</p><p>The last time I tried to greas it, it wouldn't take any and I has noticed that the pin had started turning in the bobtach rather than the rod eye. I was figuring on having to repair the bobtach as well.</p><p>Well, the welding job that I was supposed to do for a guy today was cancelled, and I already had child care for the kids, so I had a look around and figured that this would be a good job to tackle. I popped the pin out and it seemed to be the main culprit for the wear.</p><p><img src="http://i851.photobucket.com/albums/ab73/SkidRoe/e5b38c9f648e9ca0be4ee8b0ea261641.jpg?t=1354994514" alt="" class="fr-fic fr-dii fr-draggable " style="width: 620px; height: 465px" /></p><p>Checked the holes in the bobtach with a bore gauge. Other than being worn about 40 thou oversize, they were only about 10 thou out of round. The eye on the cylinder was worn a bit worse, it was close to 90 thou in it's worst spot. Also, much to my disappointment, there is no bushing in the eye on my machine. So, I went at it with the die grinder and was able to get most of the spots to clean up at about 45 thou over.</p><p>I went and picked up a piece of 1-1/4" 4140HT (pre-hardened) to make a new 1.045" pin. I gun drilled it for a grease fitting and cross drilled it completely, so that there are now 2 points for the grease to lube the pin. Last of all, I made a new tab to weld to the pin to keep it from rotating and hold it in. The 4140 machines nice with carbide tooling, but I had to re-sharpen my 1/8" drill a few times to get it drilled.</p><p> <img src="http://i851.photobucket.com/albums/ab73/SkidRoe/ba18b2e228d60ebd4115d33aeaa98b74.jpg?t=1354994510" alt="" class="fr-fic fr-dii fr-draggable " style="width: 620px; height: 465px" /></p><p><img src="http://i851.photobucket.com/albums/ab73/SkidRoe/c89f2010212a29f82b827b9f9aa932f5.jpg?t=1354994506" alt="" class="fr-fic fr-dii fr-draggable " style="width: 620px; height: 465px" /></p><p><img src="http://i851.photobucket.com/albums/ab73/SkidRoe/156465066495bb8d27f6084ac9754ddd.jpg?t=1354994500" alt="" class="fr-fic fr-dii fr-draggable " style="width: 620px; height: 465px" /></p><p>Not an ideal fix, but way better than it was. I will have to pull the cylinder at some point and bore the rod eye for a bushing.</p><p>After fixing this joint, I noticed that there is a bit of wear in my lower pins as well. Have to order up some parts to do them.</p></blockquote><p></p>
[QUOTE="SkidRoe, post: 61146, member: 3290"] Here is what I fixed today, for anybody who is interested: The rod end pin has had some slop in it ever since picked up the machine from my dad. I have been greasing it regularily to try and keep it going, but I knew that I was going to have to do something someday. The last time I tried to greas it, it wouldn't take any and I has noticed that the pin had started turning in the bobtach rather than the rod eye. I was figuring on having to repair the bobtach as well. Well, the welding job that I was supposed to do for a guy today was cancelled, and I already had child care for the kids, so I had a look around and figured that this would be a good job to tackle. I popped the pin out and it seemed to be the main culprit for the wear. [IMG width="620px" height="465px"]http://i851.photobucket.com/albums/ab73/SkidRoe/e5b38c9f648e9ca0be4ee8b0ea261641.jpg?t=1354994514[/IMG] Checked the holes in the bobtach with a bore gauge. Other than being worn about 40 thou oversize, they were only about 10 thou out of round. The eye on the cylinder was worn a bit worse, it was close to 90 thou in it's worst spot. Also, much to my disappointment, there is no bushing in the eye on my machine. So, I went at it with the die grinder and was able to get most of the spots to clean up at about 45 thou over. I went and picked up a piece of 1-1/4” 4140HT (pre-hardened) to make a new 1.045” pin. I gun drilled it for a grease fitting and cross drilled it completely, so that there are now 2 points for the grease to lube the pin. Last of all, I made a new tab to weld to the pin to keep it from rotating and hold it in. The 4140 machines nice with carbide tooling, but I had to re-sharpen my 1/8“ drill a few times to get it drilled. [IMG width="620px" height="465px"]http://i851.photobucket.com/albums/ab73/SkidRoe/ba18b2e228d60ebd4115d33aeaa98b74.jpg?t=1354994510[/IMG] [IMG width="620px" height="465px"]http://i851.photobucket.com/albums/ab73/SkidRoe/c89f2010212a29f82b827b9f9aa932f5.jpg?t=1354994506[/IMG] [IMG width="620px" height="465px"]http://i851.photobucket.com/albums/ab73/SkidRoe/156465066495bb8d27f6084ac9754ddd.jpg?t=1354994500[/IMG] Not an ideal fix, but way better than it was. I will have to pull the cylinder at some point and bore the rod eye for a bushing. After fixing this joint, I noticed that there is a bit of wear in my lower pins as well. Have to order up some parts to do them. [/QUOTE]
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