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Tractor Talk Discussion Forum

Mowing Question

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Dug

05-01-2005 07:57:57




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I have a JD F935 and desperatley need to sharpen the blades. While I could use a four inch angle grinder to get the job done, I would rather remove the blades and sharpen them on my bench grinder. The question is, are the nuts left handed or right handed? Any special tricks to removing them? Would you use locktight when reinstalling?

Already posted on the lawn garden section, but you guys always come through!

Thanks,

Dug

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Ibby

05-01-2005 13:47:26




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 Re: Mowing Question in reply to Dug, 05-01-2005 07:57:57  
Even after you take them off, I use a 4 1/2 inch angle grinder with a 36 grit sanding disk to sharpen them. I think it's faster, and I get a better edge with less heat buildup



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jaker2

05-01-2005 08:35:17




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 Re: Mowing Question in reply to Dug, 05-01-2005 07:57:57  
Hello Dug,
The blades are held on by I believe a 5/8ths bolt that takes a 15/16 th wrench. They are right handed. If the blades have been on there very long or have hit rocks or other hard things besides grass they will be stretched and a bear to remove. I usually take a 4x4 and put against the blade and the deck to wedge them and try to remove the blade. I am fairly large individual( I weigh 300lbs) and it takes all I am worth to remove them. If you cannot get them, take the grinder and grind the head off, and they will come out with your fingers. Then go to JD and get new bolts for all of them. I cannot recall for certain but I think there are two spring washers between the bolt and the blade. No loctite is necessary because the blades will tighten when they spin. Make sure when you put the blades back on that you get them up flush against the shaft. The bolt hole has a sleeve like thing that sticks down to go in the blade hole. If you need anymore help let me know. Other than the electical system that 935 is a simple machine.

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RayP(MI)

05-01-2005 13:30:07




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 Re: Mowing Question in reply to jaker2, 05-01-2005 08:35:17  
Put anti-sieze compound or at least grease on threads when reassembling. Makes it lots easier to get loose next time. If I have deck off, I like to use an impact wrench to loosen, if not a breaker bar and 4x4 as suggested in other post.



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RayP(MI)

05-01-2005 13:37:49




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 Re: Mowing Question in reply to RayP(MI), 05-01-2005 13:30:07  
Might be a good idea to run a tap up the threads in the spindle(s) and either replace bolts, or run a die over them to clean out and true the threads. In service, those threads are subject to damage and distortion, will lead to failure, or at least difficulty disassembling.



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