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More stuck pins.
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<blockquote data-quote="Jyuma" data-source="post: 47386" data-attributes="member: 4393"><p>Tazza</p><p>You mentioned 4140 steel for the pins. 4140 is intended to be worked in it's annealed state but then hardened by heat and quenching once in it's finished form. However, I was able to cut through my 1.125 pins with a standard metal cutting saws-all blade in under 1 minute. I doubt that I could have done that if the pins were hardened... in fact, I am certain I could not. Therefore I must assume that the pins used in my Thomas backhoe are not 4140 but plain old mild steel. </p><p>Wouldn't it be preferable to use mild steel and replace the pins as they wear rather than hardened steel which would wear the sleeves and bushings rather than the pins?</p></blockquote><p></p>
[QUOTE="Jyuma, post: 47386, member: 4393"] Tazza You mentioned 4140 steel for the pins. 4140 is intended to be worked in it's annealed state but then hardened by heat and quenching once in it's finished form. However, I was able to cut through my 1.125 pins with a standard metal cutting saws-all blade in under 1 minute. I doubt that I could have done that if the pins were hardened... in fact, I am certain I could not. Therefore I must assume that the pins used in my Thomas backhoe are not 4140 but plain old mild steel. Wouldn't it be preferable to use mild steel and replace the pins as they wear rather than hardened steel which would wear the sleeves and bushings rather than the pins? [/QUOTE]
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