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John Deere Tractors Discussion Forum

Gear box question

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Author  [Modern View]

12-06-2018 16:03:51

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I think I know what this is for, but seems to be a piece missing. Can any of you help me out.
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12-07-2018 08:14:47

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 Re: Gear box question in reply to deeretails, 12-06-2018 16:03:51  
Mystery solved, there was a stub shaft pushed into the 540 side. Managed to get it out and it fits right on the standard PTO shaft.
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jd adict

12-07-2018 09:12:20

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 Re: Gear box question in reply to deeretails, 12-07-2018 08:14:47  
yes that looks better, now if you were planning on useing it the rule of thumb was to put a short pto shaft onto the end of the utility transmissions and then put the speed changer onto that. this helps eliminate some exessive torque on a long nose utility pto and breaking the ears off. we all have one of those that have been welded up, dont need any more.
i have never seen one on but question if a short pto shaft like on a rowcrop utility will fit onto a utility and then the speed unit because there is limited room with the big drawbar supports.
let us know or post a picture when you get it mounted.

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Tim S

12-07-2018 07:22:28

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 Re: Gear box question in reply to deeretails, 12-06-2018 16:03:51  
Looks like you could turn it around and reduce 1000 RPM to 540 RPM...of course you would need to take the Horse power used into consideration...this gear box looks sturdy..

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12-07-2018 07:12:30

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 Re: Gear box question in reply to deeretails, 12-06-2018 16:03:51  
JD & Mike, I think there should be an adaptor piece between this box and the transmission. But I've no idea what it should look like. Love to see a picture or reference to it on a parts page.

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jd adict

12-06-2018 19:49:59

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 Re: Gear box question in reply to deeretails, 12-06-2018 16:03:51  
its a dubuque powershaft speed changer. 540 to 1000 rpm.
yes missing the shield
nice option.

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Mike M

12-07-2018 04:24:20

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 Re: Gear box question in reply to jd adict, 12-06-2018 19:49:59  
Wouldn't you need something to connect the two 540 male ends together ? Or did some of those have a removable stub shaft on the tractor end ?

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