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TO-20 Draft Control

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Dirk Vanderwall

02-16-2001 19:21:37

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I have a 1948 TO-20 and have a question about the normal operation of the draft control mechanism on the 3-pt hitch. When I am pulling an implement (rotary mower, back blade, etc.) and the implement meets resistance, the 3-pt hitch automatically starts to raise up, but it doesn't stop until it has reached its maximum height. Once it has started to raise itself, I can't make the 3-pt go back down until it has gone all the way up. When the 3-pt reaches its maximum height it seems to "trip" itself so that it can go back down. Is that how the draft control on the 3-pt should operate?

I am a novice tractor owner and just recently found this site, and have already found it very helpful. I now know that I need an over-running clutch for my rotary mower so that it won't push me around any more. I didn't know there was such a thing until I saw it discussed elsewhere on this site.

Sorry for the long post. I look forward to your thoughts on my question.

TIA,
Dirk Vanderwall

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ZANE

02-18-2001 18:35:28

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Re: TO-20 Draft Control in reply to Dirk Vanderwall, 02-16-2001 19:21:37

I think your control valve is sticking. It may be sticking because the knee action spring that goes in the middle of the control rods and also connects to the ram cylinder may be weak.

Here is a picture of the spring and also see the link below for a fix to any of the lifts for the Ferguson system tractors. TO TE TEA and 9N and 2N Ford tractors

ZANE THANG POSITION CONTROL

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Dirk Vanderwall

02-18-2001 21:10:13

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Re: Re: TO-20 Draft Control in reply to ZANE, 02-18-2001 18:35:28

Thank you for your further responses to my question. They have been very helpful. I'll take a look at the fork control spring and see if that takes care of the problem. Zane, I have seen the discussion of your Zane Thang elsewhere on the site, and it sure sounds like it makes the 3-pt much more user-friendly. I ran a rotary mower with my tractor for the first time last summer, and I was constantly frustrated by the lack of position control. I plan on placing an order for one before mowing season gets here.

Thanks for all the input.

- Dirk

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Ray,IN

02-17-2001 18:20:48

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Re: TO-20 Draft Control in reply to Dirk Vanderwall, 02-16-2001 19:21:37

Dirk I emailed you the page that shows the adjustment of the Ferguson safety system and pictures. Let me know if it didn't receive right. I am using my new scanner,and things are greek to me. I tried to post a reply this afternoon but the YT server didn't respond.

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Dirk Vanderwall

02-18-2001 13:01:14

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Re: Re: TO-20 Draft Control in reply to Ray,IN, 02-17-2001 18:20:48

Thanks for your responses. From them, I take it that my 3-pt isn't working/adjusted properly, and that it shouldn't go all the way up before it can come back down again. Ray, I haven't received your message and attachment at my e-mail address - thanks for trying. I do have the TO-20 operation and maintenance manual, which discusses adjusting the master control spring and the lift control quadrant. Is that what you were trying to e-mail to me? I'll try and make those adjustments in the near future and see if that makes a difference in how the 3-pt works. Dave, I see the fork control spring in the blow-up figure in the parts book. I'll do the routine maintenance above, and if I still have a problem, I'll pursue the fork spring. If I need to get inside the hydraulic system, is that something a novice mechanic like me should attempt, or should I leave it to the professionals?

Thanks again for the help.

- Dirk

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teadave

02-18-2001 19:01:15

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Re: Re: Re: TO-20 Draft Control in reply to Dirk Vanderwall, 02-18-2001 13:01:14

if you can turn a wrench & remember/figure out how to put it back together, there's no reason a novice mechanic can't fix these old tractors. remember they were designed to be fixed by a farmer in the field & 50 yrs ago they didn't design with computers.

teadave

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Ray,IN

02-18-2001 16:52:02

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Re: Re: Re: TO-20 Draft Control in reply to Dirk Vanderwall, 02-18-2001 13:01:14

I mistyped your address so I sent it again about 5 min. ago. You can look at and fix the fork control spring yourself thru the rt. side cover(containing dipstick) without draining the oil, or removing the top cover( which is a pain). Teadave probably diagnosed it right.

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RICK GRANT

02-19-2001 18:08:40

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Re: Re: Re: Re: TO-20 Draft Control in reply to Ray,IN, 02-18-2001 16:52:02

hi i have a question for ray.i have a to30 when im carrying a implement with the 3 point hitch especially while operating a brush hog i cant put it in one place without it either going all the way up or all the way down.i put a chain adjustment on it and keep the adjustment lever in the down position.i set the height with the chain makes it alot easier this way.is something wrong or is this just how it operates. i have heard different views on this from diiferent people.

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Dirk Vanderwall

02-18-2001 12:59:19

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Re: Re: TO-20 Draft Control in reply to Ray,IN, 02-17-2001 18:20:48

Thanks for your responses. From them, I take it that my 3-pt isn't working/adjusted properly, and that it shouldn't go all the way up before it can come back down again. Ray, I haven't received your message and attachment at my e-mail address - thanks for trying. I do have the TO-20 operation and maintenance manual, which discusses adjusting the master control spring and the lift control quadrant. Is that what you were trying to e-mail to me? I'll try and make those adjustments in the near future and see if that makes a difference in how the 3-pt works. Dave, I see the fork control spring in the blow-up figure in the parts book. I'll do the routine maintenance above, and if I still have a problem, I'll pursue the fork spring. If I need to get "inside" the hydralic system, is that something a novice mechanic like me should attempt, or should I leave it to the professionals?

Thanks again for the help.

- Dirk

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Dirk Vanderwall

02-18-2001 12:57:04

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Re: Re: TO-20 Draft Control in reply to Ray,IN, 02-17-2001 18:20:48

Thanks for your responses. From them, I take it that my 3-pt isn't working/adjusted properly, and that it shouldn't go all the way up before it can come back down again. Ray, I haven't received your message and attachment at my e-mail address - thanks for trying. I do have the TO-20 operation and maintenance manual, which discusses adjusting the master control spring and the lift control quadrant. Is that what you were trying to e-mail to me? I'll try and make those adjustments in the near future and see if that makes a difference in how the 3-pt works. Dave, I see the fork control spring in the blow-up figure in the parts book. I'll do the routine maintenance above, and if I still have a problem, I'll pursue the fork spring. If I need to get "inside" the hydralic system, is that something a novice mechanic like me should attempt, or should I leave it to the professionals?

Thanks again for the help.

- Dirk

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teadave

02-17-2001 13:39:33

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Re: TO-20 Draft Control in reply to Dirk Vanderwall, 02-16-2001 19:21:37

i think the fork control spring may be broken or have fallen off.

best bet is to get an I&T FE-2 manual. it has blow-ups of most of the parts & is a must for working on a 50yr old piece of equipment.

teadave

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