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Ford 9N, 2N & 8N Discussion Forum
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PTO Over run clutch

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JJUK

04-07-2021 09:43:56




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So my pto is the original 1-1/8 would it be a better idea to get a over run clutch to fit 1-1/8 instead of do a pto conversion ?




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zuhnc

04-10-2021 14:05:31




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 Re: PTO Over run clutch in reply to JJUK, 04-07-2021 09:43:56  
Whether it is 1-1/8" or 1-3/8", the N's NEED an OR clutch for implements. I replaced my PTO shaft (1-1/8") with the 1-3/8" one due to the previous owner(s) never lubricated anything, and the splines were badly worn, as well as being twisted. Put the appropriate ORC on it, and have not had any issues. Grease it regularly, as well as the u-joints on the drive shaft for the implements. I don't take it off, but have a shield that covers it completely on three sides. I do shut off the tractor when attaching or removing implements; safety first. zuhnc

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jimtrs

04-08-2021 10:33:46




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 Re: PTO Over run clutch in reply to JJUK, 04-07-2021 09:43:56  
Quoting Removed, click Modern View to see

Adding an external ORC often requires implement PTO shafts to be cut for correct fit up.

Check carefully if they need to be trimmed.



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Mad Farmer

04-08-2021 09:07:13




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 Re: PTO Over run clutch in reply to JJUK, 04-07-2021 09:43:56  
I got my 9N in the 1980s, put a ORC on to run the rotary cutter. I grease it every use, more if I'm cutting all day. It still works fine.

Only drawback I see is it sticks out longer than just a shaft.



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JohnnyHville

04-08-2021 09:00:11




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 Re: PTO Over run clutch in reply to JJUK, 04-07-2021 09:43:56  
I'm going to go against the grain, swap it out. Especially if you want to fully use your machine.
I ran the 1 1/8 for the first +/- 20 years. Had to use the ORC on all other pto implements (since they're all 1 3/8 receivers), whether it needed one or not for safety reasons.
Among the bigger issues:

- Always was an issue on the cone spreader because of the additional length of the ORC meant that the I'd have to tilt the spreader way forward and raise to full running height in order to hook up (because the telescoping shaft to spreader won't close enough), and run it at a forward tilt, even if lifted a good bit higher than the pto. As such couldn't fill up more than 3/4 without spilling lots of seed or fertilizer with every bump. Then, if for some reason would need to quit mid-job, would have to uncouple pto on shut off, otherwise the eventual bleed down would cause the spreader to lower until it was causing the spreader drive shaft to bind (because weight would cause the 1" square tube to bend minutely). Once tried limiter chains, no help. Also cut a drive shaft down once, but then if I raised it too high, it would pull apart. 540 rmp fish flopping 1" square tube = no fun, brittle old plastic sleeve shrapnel everywhere, lots of new fix-its, and need for clean underwear.

- Major issues with the sprayer pto pump. All in regards of clearance of sprayer, in using torque arm to limit pump movement, and weight of pump on ORC (would stress wear ratcheting device into oblivion).

- Would have to remove the ORC if using a dump scoop or back blade, and occasionally with 3 pt draw bar (depending on what I was trying to pull), otherwise it would hit the ORC. Broke a couple that way.
- Major p-i-t-a since means removing zerk, fishing through grease to line up on roll pin, and pounding out and hoping it fits through the zerk hole.

Now I use the 1 /38 shaft, with the spring collared ORC. A much much better setup and very much worth the $75 to swap out. Big time "Why didn't I do this before" moment. PS, FNH parts desk sells them if shipping is pricing you out.

For what it's worth, I did once try the 1 1/8 - 1 3/8 adapter sleeve with a 1 3/8 spring collared ORC. Worked good for about 2 hours of light use, then wear started adding clearance (could feel the slight difference occurring with pto engagement/disengagement). Once that started happening, had the adapter splines turned into metal shavings in about 15 minutes of heavy weeds, and added significant rounding to the tractor pto splines.

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wayne bullen

04-08-2021 10:35:38




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 Re: PTO Over run clutch in reply to JohnnyHville, 04-08-2021 09:00:11  
Those adapter sleeves shred after a couple of hours with a sickle mower.



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Eman85

04-08-2021 08:02:32




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 Re: PTO Over run clutch in reply to JJUK, 04-07-2021 09:43:56  
I've had the conversion ORC on my 8N since I bought it over 30 years ago. I leave it on and grease it regularly and it's always worked great.



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Richard G.

04-08-2021 05:52:55




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 Re: PTO Over run clutch in reply to JJUK, 04-07-2021 09:43:56  
Been using one on my 1 1/8 for years.



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R Geiger

04-07-2021 10:23:29




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 Re: PTO Over run clutch in reply to JJUK, 04-07-2021 09:43:56  
Quoting Removed, click Modern View to seeI have been running two of the 1 1/8 ORC for years. 1 3/8 output to fit my mower.



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2ruNgineer

04-07-2021 12:19:15




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 Re: PTO Over run clutch in reply to R Geiger, 04-07-2021 10:23:29  
Ditto for my shreader I've used for almost 10 years.



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JJUK

04-07-2021 11:01:12




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 Re: PTO Over run clutch in reply to R Geiger, 04-07-2021 10:23:29  
Ok thanks!



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Bruce (VA)

04-07-2021 09:48:36




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 Re: PTO Over run clutch in reply to JJUK, 04-07-2021 09:43:56  
Unless the pto was leaking, I'd just get the 1-1/8th ORC

But I'm pretty tight.



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JJUK

04-07-2021 09:50:46




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 Re: PTO Over run clutch in reply to Bruce (VA), 04-07-2021 09:48:36  
Yeah I was thinking its cheaper. But didnt know if it was a good idea or not



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