Egged pinhole

Finally got the super a home and noticed when I went a crossed the a bump the front end wheels were moving back and front in the tube just took it apart and seen that the hole were the pin goes into is egged out pretty bad on both sides pins are worn good to what can I do to get rid of the egged holes
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If you want to spend the money take it a machine shop. I had the same problem on my 300U. The guy bored it round and made a new pin.
 
I had the EXACT problem last year . Someone had ran the clamp on the tube loose(previous owner of wide front I bought) and thats what happens!.

Just take a fine grinding disc and clean the area up,weld around the elongated sides of the hole,and then take a die grinder with a burr and SLOWLY work the welds until a new pin of the correct diameter just slides back through he hole.

Also,if you wanna "cheat" a little,you can find an aluminum/brass/carbon rod the same diameter as the pin and just stick it through the hole and wels around it. The weld will avoid those materials and help you make a "clean hole,but I like the FIRST way I did it the best. ;)
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One bad one good. Had it been tight you would have had a way harder job getting it loose! I would bore it and use a grade 8 bolt with no threads at the tube to tube interface. Jim
 
If you DO just oversize the one bad hole in the tube to use a bigger bolt,and bored the hole in the one clamp bigger ,you will have one,"odd" hole in the tube and wont have the feature the adjustable wide front. (All the other adjustment holes in the tube will be standard.)
I think it would be better to just re size the one,BAD hole and keep the front end with all holes the same pin size for maybe a future adjustment myself. (Mu opinion)
 
Bad thing about boring oversize is that then you would need to bore all the other holes too if you want to move the axle width around. I know this does not happen very often, but I would not bore oversize just in case I ever wanted to change the width.

I would apply a little weld and then free hand shape back into a round shape with a carbide burr in either an air grinder of better yet one of those $25 electric ones from Harbor Freight works excellent. 6013 rod grinds almost like virgin steel if you use a stick welder so it is very easy to shape with handheld power tools. A wire feeder would also work well for this job but will be a tad harder to shape

FWIW: I probably use my welders for repairing oblong, worn, or sloppy holes as compared to any other single purpose. That an a cheapo electric die grinder from Harbor freight and a quality carbide burr and in business. (Hint: Use the biggest diameter carbide burr that you can fit in the hole. You will have more control and accuracy with a bigger diameter over a tiny diameter carbide burr. Small diameter prone to divoting where bigger diameter leaves smooth contours).
 
WOW what a heck of a neat and clean job. VERY nice and please pat yourself. I had to oversize a machine at work because the weld shop is only week days AND a different union!
 
Count yourself blessed that the knee is loose in the tube. People spend months heating and beating and pressing and pulling, trying to get those things to move.

Put a brass rod the size of the original pin in the hole, and weld around it. Weld won't stick to the brass, so once things cool you can just remove the brass rod, leaving you with a near-perfect hole.

I would think a welding shop could have that fixed up for you in a jiffy, and would use the technique I just described.
 
I have found that a reamer will make a very nice round hole out of an irregularly shaped hole. I stronger recommend that you try to find one. You will be glad you did, if you can find one. Reamers have more cutting edges and follow the hole, without bouncing around.
SDE
 

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