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I did hit what I think was a hard chunk of frost, when pushing snow, was a little rough in one spot underneath, did not notice the pin broke until I parked it in the garage. I heard the noise and felt something, but at night with just headlights on, just kept working, kinda noticed the radius arm hanging, glad I did not catch onto anything with it ! I'm sure taking it real easy on the o'le 850 will be the best thing I can do to avoid problems, for now. No doubt it will be time to do the pivot pin & bushing soon, it's got some free play. The stronger bolts probably won't be a problem, but I think because the pivot pin is worn, the axle can rotate, and cause more stress on the radius pins. Nevr Seize, and like products, great stuff, been using it for years, there is no substitute. The newer pins are probably a mild steel, like ASTM 60, or less, makes you wonder if the supplier could even tell you what grade of material they are selling, compare that to what was originally specified, and or use the vice method !
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