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Order Ford 841 Parts Online

841S - Total Travel for Rear Lift

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radara4077

04-18-2019 08:34:04




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Had an issue with the lift on my 841S. Wouldn't raise at all. It sat all winter (inside), and now I finally got it to the mechanic to repair. The Cam Follower Pin was all but gone, so I got a new one and he got it installed. A few evenings later, I came to help him, and we followed the I&T manual's guidelines for adjusting the linkages (one was off by over a 1/2 inch). Once we got the top cover back on, the rear arms would lift just fine, but appeared to not "go all the way down" if that makes sense. They would travel most of the way, then encounter what felt like (from standing on the lift arms) resistance that built as it lowered (across maybe 6 inches of travel at the end of the lift arms) until they came to a stop. Pushing slightly down on the draft control lever would send the arms lower, and shifting totally into draft control would cause the arms to move on down until the upper linkage touched the rear axle.

What could be causing this? I have apparently ran the tractor for years with a "poor" Cam Follower Pin (and having the lift arms drop as far as they could possibly go) so maybe I'm just used to incorrect operation.

What is the spec travel distance for the rear lift arms? Or, to ask it another way, what are the spec distances from the rear of the lift arm to the ground in the upper and lower positions (accounting for variations in tire size, etc.).

Thanks!

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radara4077

04-25-2019 07:38:55




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 Re: 841S - Total Travel for Rear Lift in reply to radara4077, 04-18-2019 08:34:04  
Thanks for your replies. I'll put the leaking lift on the back-burner for the time being, I think.

As for the seed spreader, I was attempting to sow straight red clover (no mix or cover). I had a feeling it was a long shot, but it turned out that too much seed came out even with the unit completely "closed".



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sotxbill

04-24-2019 06:47:38




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 Re: 841S - Total Travel for Rear Lift in reply to radara4077, 04-18-2019 08:34:04  
The hicup-ing lift is due to leakage.. at the piston rings or somewhere else. How fast it hicups is determined by how bad the leak off. anything from the leaking safety valve, to control valve can also cause the leak off.



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radara4077

04-24-2019 06:01:07




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 Re: 841S - Total Travel for Rear Lift in reply to radara4077, 04-18-2019 08:34:04  
UPDATE:

After a lengthy discussion and some mulling-it-over, we decided to put the thing back together and "go with it," since the lift works well other than that travel issue and is very strong.

Fast forward to this past Monday. I had some seed to spread, so I hooked up the "whirly gig" and went to town. Never got my adjustments right on the seed spreader, but that's a topic for another discussion. The lift worked just fine, except for this:

With the engine running and the lift up (noticed this happening regardless of the position, except for "all the way down"), the lift would "weep" down an inch or so, then surge back up to the correct position. This would take place over the course of 10-20 seconds or so (guessing).

I've seen other lifts do this before (our family's John Deere 2040 was notorious for this), but I have never known the cause. What do you all suppose I have going on here?

Thanks again!

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keith williams

04-24-2019 08:02:50




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 Re: 841S - Total Travel for Rear Lift in reply to radara4077, 04-24-2019 06:01:07  
radara4077,
sotxbill has it correct, you are leaking fluid somewhere. You may be able to identify where the leak is by looking into the lift area by way of the fill hole. People have also taken the inspection plate off and looked in that way.

As far as the whirly gig rate, I found that the rate of flow was consistent by VOLUME not by weight. So once I would get the density of the product figured, I could accurately set the flow rate to achieve my desired Lb/acre.This was with Fertilizers and they varied greatly in density. I never tried to spread a light seed. I always used a Grain drill or a hand seeder.
HTH
Keith

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JMOR

04-19-2019 09:24:28




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 Re: 841S - Total Travel for Rear Lift in reply to radara4077, 04-18-2019 08:34:04  
Quoting Removed, click Modern View to seeI can't answer your questions as asked, but maybe provide a bit of information. The lower limit is a hard mechanical limit when in Draft mode & that will be same whether tractor is running or not (piston is bottomed out in cylinder). When running & in Position Control mode, the arms will drop another few inches when control is moved from Position to Draft, but generally not more than 3 inches when all is adjusted properly.

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