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Harry Ferguson Tractors Discussion Forum

TO 20 vibration

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Jeff caleb

04-22-2006 20:43:04

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I just started useing the to 20 I purchased to replace my 8n. I eally do like it. Only problem is it has a vibration that you feel mostly in the foot pegs when running the engine at high RPM. Its also noticable in the steering wheel but not real bothersom there.The kind of vibration that will put your foot to sleep. Cant really figure it out the tractor seems to run smoothe and has good power. It is really agrivating for my son but I did notice it also. Please dont make me switch everything back to the 8n. Any help anyone

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Duner Wi

04-24-2006 17:07:56

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Re: TO 20 vibration in reply to Jeff caleb, 04-22-2006 20:43:04

If it were mine and the rear main did not leak and has good oil pressure I would split the tractor and balance the flywheel and clutch cover as a unit. You can do this your self as the pilot bearing is in the flywheel and it is easy to jig it up. I did this to mine and it got much better. If yours is way out of balance it will go hard on the mains, especially the rear main. Providing it is your flywheel causing vibration in the first place. As John said they were balanced to close tolorences at the factory and it was a selling point. It should not vibrate as much as you say IMO.

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Jerry/MT

04-24-2006 12:36:19

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Re: TO 20 vibration in reply to Jeff caleb, 04-22-2006 20:43:04

I have never noticed any vibration from the Z129 on my TO-30. I agree with John(UK), someone could have welded on a new ring gear and unbalanced the flywheel or the clutch pressure plate is loose. Another possibility is that the flywheel is not perpendicular to the crank shaft axis. When I had mine apart I seem to remember the fit of the flywheel to the crankshaft flange was very tight and if a little bit of dirt got in there it could be slightly out of plane. I'm not trying to give you something to worry about, just trying to think of all the possibilities.

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Jim in OH

04-24-2006 08:39:03

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Re: TO 20 vibration in reply to Jeff caleb, 04-22-2006 20:43:04

I don't know anything about Fords, but if the above picture from Smith's website is correct, then the Ford has counterweights on the crankshaft. The Continental engine did not have counterweights, so it would have some high speed vibration that the Ford balances out.

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steveormary

04-23-2006 20:57:34

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Re: TO 20 vibration in reply to Jeff caleb, 04-22-2006 20:43:04

Jeff;

Mabe you are running your engine too fast. When bushhogging you will get your 540 pto speed
at about 1500 rpm or 2/3rds throttle setting. I grew up with Fergusons and we never run them at full throttle.Plowing or even belt work they very seldom saw 1800 no load rpm. And yes,we did get some viabration when not under load.

steveormary

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Jeff Caleb

04-23-2006 13:19:17

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Re: TO 20 vibration in reply to Jeff caleb, 04-22-2006 20:43:04

I get the vibration with the tractor running high speed while not in gear.PTO disengauged The govoner is set @ 2100 rpm and has been adjusted as per procedure in the IT manual. It responds instantly. With those facts you would have to believe it is engine related. I am used to an 8n and maybe the continental just vibrates more.I was just wondering if this might be a coherant trait of the engine.The 8n was smoothe as glass but the gearing is intolerable.

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John (UK)

04-24-2006 08:41:20

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Re: TO 20 vibration in reply to Jeff Caleb, 04-23-2006 13:19:17

The TO20 engine wasn't prone to vibration, I dare say that some do vary but it is not normal for them to be rough, that was one of the selling points of the tractor when it was new. Are you sure that it is actually running at 2,100rpm as you say, have you had a tachometer on it. You can stick it on the PTO shaft and with the engine flat out @ 2,200rpm the PTO speed should be 800rpm. (545 PTO speed is 1500 engine rpm 3/4 throttle)

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gshadel

04-23-2006 07:53:56

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Re: TO 20 vibration in reply to Jeff caleb, 04-22-2006 20:43:04

Jeff, hard to say with any certainty with that info. Do you notice the vibration when running the PTO, vs. not running the PTO? Is the PTO running an implement? I tend to get some vibration in the foot pedal when I'm running my bush hog @ full speed, but not enough to concern me.
Do you get the vibration with the tranny in gear, vs. out of gear?
Do have the vibration when you press in on the clutch pedal?
Might be able to narrow the troubleshooting down a bit if we can determine if it is the engine, tranny, or PTO related.
Get back to us.

George

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John (UK)

04-23-2006 07:52:28

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Re: TO 20 vibration in reply to Jeff caleb, 04-22-2006 20:43:04

Is the engine running faster than it should do, it is supposed to run at 2,200 rpm with no load which would give a top road speed of about 14mph. it is possible that the governor is not adjusted correctly and that it is running too fast. The only other thing that comes to mind is that something is out of balance like the flywheel. It is possible that someone has welded the Starter gear onto the flywheel or made something to hold it on, we have had this before. Unless it is balanced it will vibrate. Remove the starter and turn the engine over by hand and check if anything like that has been done to the flywheel. If you need the information to reset the governor, email me at:-
fergusontractors(at)tiscali.co.uk
and I will send the information to you....John

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