Three point hitch draft control M4700

[Complete Turf Care]

Okay. I've found the threaded rod. I think mine is slightly different than the one you've shown because mine is a M4700, instead of an MX4700. However, I was able to adjust it and I can easily tell a difference in how things react when I move the levers.
I didn't have a 100lb weight so I tried standing on the lower links. I'm about 200 lbs. I'll do some more adjusting when I have more time. I could not unscrew the upper part of the threaded rod, so I removed the cotter pin and adjusted only the lower part.
It looks like where the lower part of the rod connects, may have gotten bent, which would throw it out of adjustment.

 

[ptsg]

Okay. I've found the threaded rod. I think mine is slightly different than the one you've shown because mine is a M4700, instead of an MX4700. However, I was able to adjust it and I can easily tell a difference in how things react when I move the levers.
I didn't have a 100lb weight so I tried standing on the lower links. I'm about 200 lbs. I'll do some more adjusting when I have more time. I could not unscrew the upper part of the threaded rod, so I removed the cotter pin and adjusted only the lower part.
It looks like where the lower part of the rod connects, may have gotten bent, which would throw it out of adjustment. View attachment 718217

The flat bar piece that attaches the top link bracket to the rod looks twisted to me. If that's indeed the case, then it would throw the entire adjustment off and most likely cause the issue you're getting now.

 

[Complete Turf Care]

Here is the linkage in a parts breakdown. The linkage would be parts 190 - 270. I'll work on it more when I have more time.

 

[sixdogs]

The flat bar piece that attaches the top link bracket to the rod looks twisted to me. If that's indeed the case, then it would throw the entire adjustment off and most likely cause the issue you're getting now.

Good thinking. The easiest answer is indeed to check to see if anything is bent before moving on to an adjustment.

 

[JWR]

Sixdogs may be right. He's showing you the diagrams and he has the direct experience with this machine. I do not own one.

Still, before you go through all that adjustment process, go find out why you cannot turn the lowering rate knob. Fix that first. Then if need be you can come back to this process.

 

[sixdogs]

Okay. I've found the threaded rod. I think mine is slightly different than the one you've shown because mine is a M4700, instead of an MX4700. However, I was able to adjust it and I can easily tell a difference in how things react when I move the levers.
I didn't have a 100lb weight so I tried standing on the lower links. I'm about 200 lbs. I'll do some more adjusting when I have more time. I could not unscrew the upper part of the threaded rod, so I removed the cotter pin and adjusted only the lower part.
It looks like where the lower part of the rod connects, may have gotten bent, which would throw it out of adjustment. View attachment 718217

I think that one nut is LH and one RH. I'll bet you are tightening rather than loosening the nut in question. That should easily come loose. Look at the threads and compare to be certain.

Sounds like you are onto a solution.

 

[Complete Turf Care]

I think that one nut is LH and one RH. I'll bet you are tightening rather than loosening the nut in question. That should easily come loose. Look at the threads and compare to be certain.

Sounds like you are onto a solution.

You are probably right. I bet I was trying to tighten instead of loosen. I would be more comfortable to adjust with the threaded rod, than to try bending the flat bar back into place and risk breaking it off.

I think we are getting close to resolving this issue. I want to get the 'lowering rate knob' to turn, but I'm afraid to twist it off. I'll look at it again when I get time.

Thanks to all who have offered suggestions. I feel so much better if this is just an adjustment issue and not something much more serious and expensive. I'd hate to know how much this would have cost me if I had sent it to a dealer.....

For those of you who have offered suggestions, I'll buy you a beer next time I see you in a bar. And sixdogs, I'll buy you 2 beers.

 

[sixdogs]

Thanks.

On the lowering knob, put some penetrating oil on it and take your time or you will snap something off. Unless you know when to say when, soak it multiple times and come back to it in a month or two.

 

[JWR]

Thanks.

On the lowering knob, put some penetrating oil on it and take your time or you will snap something off. Unless you know when to say when, soak it multiple times and come back to it in a month or two.

Can't hurt to try that but it is probably a mechanism buried below the knob that is frozen/stuck, not the knob or shaft it is mounted on itself. And yes, don't create new problems by putting too much force on it and breaking it off.

 

[sixdogs]

Did this have a happy ending and is the problem fixed?