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John Deere Tractors Discussion Forum
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How tight on late B rear axle nut?

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B51

01-23-2008 22:14:29




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Two JD publications, two different instructions. How tight do you tighten them?




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B51

01-24-2008 17:33:40




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 Re: How tight on late B rear axle nut? in reply to B51, 01-23-2008 22:14:29  
Sorry, I should have been more specific. I was refering to the cast nut next to the bull gear. I agree, I don't like the idea of any clearance to begin with. I'll give them a good tightening with a 24" wrench and back off to get cotter pin in. I also hope I didn't make a mistake by trying to save a few $ by going with a CR/SKF seal instead of JD. Thanks a-lot guys.



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machinery-man

01-24-2008 14:27:02




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 Re: How tight on late B rear axle nut? in reply to B51, 01-23-2008 22:14:29  
Wow: I thought you were referring to the wheel bolts. On the inside axle nuts these are cast iron and I use a pipe wrench with a cheater bar but just tighten to a good snug fit then back off to the nearest key hole. Don"t get rear rough on the tourge as all you are doing is setting the cone bearings. After you run they will generally loose slightly. The John Deere manual shows a special tool looks like a wrench made from flat bar. I don"t think there is any way to have a tourque setting as it just like setting wheel bearings. You want to make sure the races are seated good. I do know you want to be careful on the thread and nuts. Good luck.

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MoMark

01-24-2008 05:53:52




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 Re: How tight on late B rear axle nut? in reply to B51, 01-23-2008 22:14:29  
machinery-man, my jaw was hitting the floor until I realized that your are talking about the WHEEL nuts/bolts instead of the bull gear nut on the axle? (I think!!) Anyway, I tighten the bull gear nut until there is anywhere from a slightly detectable amount of endplay to zero endplay. You can only tighten in 1/6 of a turn increments, so you can"t always get exactly what the book calls for.



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Mike M

01-24-2008 05:17:39




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 Re: How tight on late B rear axle nut? in reply to B51, 01-23-2008 22:14:29  
I think you are reffering to the axle nut right next to the bull gear on a 2 cyl. JD B. I also think the book says ( I don't have one handy to ask ) to have .001-.004" end play on them which I don't like as that's a head start on them pounding looser. I tighten them down to 0 end play and still turn freely with NO PRELOAD. Do this before you put the outer felts and retainers in as they will make the axle tight.

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LarrySTN

01-24-2008 03:49:04




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 Re: How tight on late B rear axle nut? in reply to B51, 01-23-2008 22:14:29  
I'm not sure what you have seen in the publications. What you want is for some pre-load on the bearings. I have tightened the nut untill the free play was gone, then tightened an addtional quarter to half turn. Make sure the pre-load doesn't cause the axle to turn hard.



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machinery-man

01-23-2008 22:37:49




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 Re: How tight on late B rear axle nut? in reply to B51, 01-23-2008 22:14:29  
I've never had an issue of overtightening....3/4 socket with impact or breaker bar with cheater usually jack handle pipe. I know they have to be good and tight. Your hub needs to be in good shape plus your collars otherwise you will tightenup bottom out. I've seen people use can metal for spacers if this is the case. Don't use any oil on the axle or you'll never keep it thight, the oil will keep survicing and breaking the contact area and on slope ie the collar will drift generally out.

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