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Ford 9N, 2N & 8N Discussion Forum
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PTO

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8N in KS

04-26-2004 05:51:13




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I am running my mower directly off of my PTO shaft. I have noticed that some people use some sort of unit between their implement and the PTO. Its like about a 6-8 inch extra PTO. Should I be doing this? Why and what is it?




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Tim W

04-26-2004 07:56:56




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 Re: PTO in reply to 8N in KS, 04-26-2004 05:51:13  
what kind of mower are you running? I use a six foot three bladed Ford 930-A finnishing mower behind my 2N and I don't have any trouble with it shoving me. It just does not have the kind of inertia that a bush hog does. I wont tell you not to use one because I will probably hook one up just to be extra careful but it isn't absolutely necessary in all situations...just my experience and two cents.....Tim

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8N in KS

04-26-2004 14:26:02




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 Re: Re: PTO in reply to Tim W, 04-26-2004 07:56:56  
I have a 60" Woods mower. Its upright, not flat. I'm not sure what kind it is, but it works!



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Jeff-oh

04-26-2004 06:14:09




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 Re: PTO in reply to 8N in KS, 04-26-2004 05:51:13  
YES, you should be using one. This is a safety devise that allows your tractor motor to power your mower but does not allow your mower's momentum to back feed into the tractor's drive train and continue to drive the tractor forward after you have engaged the clutch.



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jim

04-26-2004 07:58:08




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 Re: Re: PTO in reply to Jeff-oh, 04-26-2004 06:14:09  
What do you need to install? will i have to pull out existing pto shaft?

thanks in advance



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JIM

04-26-2004 10:28:02




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 Re: Re: Re: PTO in reply to jim, 04-26-2004 07:58:08  
Thanks Jeff

However....I must be missing somthing. I have the old 1-1/8 pto shaft, and I purchase an OCR from Value bilt a while back. It came with a roll Pin.
The OCR slides on nice. But I can't see how the roll pin comes into play. I Have a Ford 2N. there is a hole in the PTO shaft that the roll pin fits, but then what?

thanks

jim



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Jeff-oh

04-26-2004 14:23:00




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 Re: Re: Re: Re: Re: PTO in reply to Jeff-oh, 04-26-2004 14:20:40  
I didn't notice until after posting that they stuck the roll pin in the left end. This is wrong... Photographic license I guess. The pin goes through the grease fitting shown on the top left. (There is a matching fitting on the oppisite side.



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Jeff-oh

04-26-2004 14:17:54




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 Re: Re: Re: Re: PTO in reply to JIM, 04-26-2004 10:28:02  
Jim,

The OCR has two grease fittings on the PTO side. Use a wrench to take both off. Slide the OCR onto the PTO and align the holes. Slide the roll pin shuch that it is evenly spaced on both sides. Re-install the grease fittings and grease it up.

The pin is there as another layer of protection if you hit a stump and instantly stop the blades. Thus you will shear the pin and your PTO gears will be protected.

Jeff

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Jeff-oh

04-26-2004 08:25:32




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 Re: Re: Re: PTO in reply to jim, 04-26-2004 07:58:08  
No no need to pull the PTO. Very Simple. The OCR slides over the current PTO and is attached with the shear pin provided. It goes on just like you were attaching an implement to the PTO. Then your bush hog attaches to the OCR normally. Once you see one at the store it will be obvious.

The only "trick" if you call it that, is if you have the older 1-1/8 PTO and you have an adaptor to run your bush hog. Then remove that and get the 1-1/8 to 1-3/8 OCR and let it do both the size adapton and safety job.

Even with a non-high momentum implement like a finish mower I like the OCR.

Jeff

Jeff.

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JIM

04-26-2004 11:32:00




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 Re: Re: Re: Re: PTO in reply to Jeff-oh, 04-26-2004 08:25:32  
Thanks Jeff

I have a Ford 2N with the 1-1/8 pto. I bought the OTC from value bilt awhile back. It came with a roll pin. the OTC fits on the 1-1/8 pto, slides on tight. for the life of me, I don't see how the roll pin comes into play, it fits in the hole on the PTO shaft, but this prohibits the OTC from sliding on. What's the trick?

thanks in advance

Jim



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8N in KS

04-26-2004 14:30:56




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 Re: Re: Re: Re: Re: PTO in reply to JIM, 04-26-2004 11:32:00  
I'm glad to know I am not the only person that isn't sure how these work! Thanks for all the great advice.



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ED-IL

04-26-2004 05:59:57




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 Re: PTO in reply to 8N in KS, 04-26-2004 05:51:13  
It is an ORC (over running coupler)

It is a device which connects the driveline when the Tractor PTO is running at a speed equal to the implement, but disconnects the driveline when the Tractor PTO is running slower than the implement. This device is very handy when using an implement like a brush mower. The inertia developed by the mower's flywheel is able to keep the tractor moving even with the clutch depressed.

Some say that an ORC is not necessary with a belt driven implement like a finish mower. I run with one on my 2N for finish and brush mowing.

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souNdguy

04-26-2004 05:59:19




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 Re: PTO in reply to 8N in KS, 04-26-2004 05:51:13  
Most likely you are seeing an over running coupler.. ORC... it only transmits power in one direction.. in the other it ratchets... That way your mower won't power your drivetrain when you hit the clutch.. A safety issue.

Soundguy



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