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John Deere Tractors Discussion Forum

620 reduction gear cover shaft

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02-21-2021 10:53:40

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Finally got the crank back for my dads 620 and we are putting it back together wondering is there a torque spec for the nut on the shaft that comes threw the reduction gear cover. Wondering if some one can help or is it just snug it up and back it off that the cotterpin fits threw?

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02-21-2021 15:59:38

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 Re: 620 reduction gear cover shaft in reply to farmerjim72, 02-21-2021 10:53:40  
I don't know the 620 personally but I'll share a tip I was given years ago for castle nuts, when you want to have them tight and not really back off. Tighten it and if the pin lines up, you're good, if it needs to go a little more to line up, but you don't want to strip anything, file the backside of the nut a little bit, try it, and repeat as necessary until it lines up at a torque you're comfortable with


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02-21-2021 10:55:49

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 Re: 620 reduction gear cover shaft in reply to farmerjim72, 02-21-2021 10:53:40  

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02-21-2021 11:12:32

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 Re: 620 reduction gear cover shaft in reply to farmerjim72, 02-21-2021 10:55:49  
Good and tight without backing off preferably

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