In reply to master Control Spring thread

Sorry, been having problems replying to the thread below about the master control spring, so here goes, but with a new topic to kick it off - moderators if you can move this to where it needs to be that would be great - thanks

Is the 1/8" of slack in the yoke or in the spring? When you reassembled the new spring etc., you should do up the adjustment on the threaded bar that runs through the spring until you can only just turn the spring by hand, then lock everything off, and put everything back together.

Draft control is [i:69c0990bf8]very[/i:69c0990bf8] sensitive - there is a tale over here that an old boy used to bet someone he could lift a three furrow plough with one finger - having got a load of bets in, he would then walk to the back of his (running) tractor, and gently lift with one finger on the rearmost plough share - and the plough would lift.

A mate of mine over here has uploaded something similar to YouTube click here https://www.youtube.com/watch?v=uvtFPwNPgAE

To answer your question though, if the top link is 'pushed' against the tractor, linkage internally will operate the lift on the three point, and if the top link is 'pulled' the internal linkage will lower the three point to maintain a constant draft on the plough (for example).

The advantage is that if your subsoil implement hits an obstruction, like a stump or rock, then the plough is lifted and safety for the driver is returned - this was why the Ferguson system was a revolution in farming.

Before this, dragged implements were responsible for killing a number of people every year when stumps/rocks/whatever were struck by the plough, and the tractor overturned backwards, squashing the driver.

If you are trying to post something that has a link to a parts website, you may want to remove that link before posting. Some links that are in violation your posts will not show up.

not sure what's happening batman
I seen your post down in site comments
so came up here and seen this post so I looked for the original post
you basically have 4 posts there in replies
I can see them in classic view but they are blank in modern
Untitled URL Link

Batman, I read your reply in the classic view ( link in above post). The slack in mine was in the spring. When I took it out the spring loose and had about 1/8 gap between the yoke/cap and spring. I also found that there is a washer with a small hole that's off center that goes in to the top cover before the spring assy. It looks like the washer goes over the pin that comes out of the cover to contact the spring assy? I dont really know what the washer is for but it's missing, I have a new one to put in place.

So far I haven't locked the spring adjustment down but it's tight enough that I have to grip it semi-firm to twist the spring. Its definitely not loose but not real tight either. If I understand correctly when installing I need to tighten that spanner nut down until the yoke is loose, then back it up until there is no slack?

(quoted from post at 00:52:28 04/15/16) Batman, I read your reply in the classic view ( link in above post). The slack in mine was in the spring. When I took it out the spring loose and had about 1/8 gap between the yoke/cap and spring. I also found that there is a washer with a small hole that's off center that goes in to the top cover before the spring assy. It looks like the washer goes over the pin that comes out of the cover to contact the spring assy? I dont really know what the washer is for but it's missing, I have a new one to put in place.

So far I haven't locked the spring adjustment down but it's tight enough that I have to grip it semi-firm to twist the spring. Its definitely not loose but not real tight either. If I understand correctly when installing I need to tighten that spanner nut down until the yoke is loose, then back it up until there is no slack?

Click to expand...

Sorry about the 'classic view' thing - I have no idea what is going on :?

If your top link yoke, and the bushes that keep it in place are all good, there should be no slack! With mine, I did all the spring setting outside the top cover, then replaced the spring in the top cover, without the yoke in place, locked up the spring setting with that weird internal castellated nut, then refitted a new yoke (with new bushes in it). End of problem.

If you try fiddling with the spring setting when it is hidden inside the top cover, you really have no idea what is slack, and what is loose.

Hope this helps.