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We bought a new FD140 this year on a Case 8230. The adapter has the double float sensor option. I set the header up properly according to the book, but when I use AHHC it wants to tilt to the right, or positive 0.6 to 1.1 degrees. Any suggestions on fixing this problem? Im in rigid mode cutting wheat.
 

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We bought a new FD140 this year on a Case 8230. The adapter has the double float sensor option. I set the header up properly according to the book, but when I use AHHC it wants to tilt to the right, or positive 0.6 to 1.1 degrees. Any suggestions on fixing this problem? Im in rigid mode cutting wheat.
Interesting.
That same setup on a Claas it likes to average lateral reading 55 ish (0 to 100 scale) so also slight lean to the right.
I don’t know why, I just live with it, not functionally significant.
 

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Discussion Starter #4
Interesting.
That same setup on a Claas it likes to average lateral reading 55 ish (0 to 100 scale) so also slight lean to the right.
I don’t know why, I just live with it, not functionally significant.
0.6 degrees just bothers me, but over 1 is so far off that I have to adjust it every few seconds. That doesn't work for me. My cousin suggested that it could be the tilt cylinder. The right side certainly is heavier with the right transport wheels.
 

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Discussion Starter #5
Is it correcting for the different weights of the gauge wheels?
I followed the set up instructions and set the float the same on both sides, then backed off the right side 2 full turns. They say that is for the double knife drive. But anyone who has lifted up both gauge wheels on the right side knows those buggers are heavy!
 

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I set my 2152 so it takes more to lift the right side because of the gauge wheels. Say like 20lbs to lift left corner and 50lbs to lift right corner. Did I get that backwards? It is early and no coffee yet.
 

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I set my 2152 so it takes more to lift the right side because of the gauge wheels. Say like 20lbs to lift left corner and 50lbs to lift right corner. Did I get that backwards? It is early and no coffee yet.
Ha ha, me neither!
Come to think of it, 40’ and 45’ flexes with full equipment (upper cross auger, transport, DKD) MacDon actually specs to back off right two springs two turns after best and even float is obtained.
Perhaps that is a procedure no long needed with lateral tilt control?
 

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We bought a new FD140 this year on a Case 8230. The adapter has the double float sensor option. I set the header up properly according to the book, but when I use AHHC it wants to tilt to the right, or positive 0.6 to 1.1 degrees. Any suggestions on fixing this problem? Im in rigid mode cutting wheat.
Does that mean the adapter has two sensors, a left and a right. Which should mean it can auto tilt side to side hydraulically and not just floating on the springs? My first thought was the older ones needed a Y cable to feed header signal to both sides of the combine sensor system or it would try to lift one side only, getting things off level. I think I am behind the learning curve on your problem though???
 

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Does that mean the adapter has two sensors, a left and a right. Which should mean it can auto tilt side to side hydraulically and not just floating on the springs?
Some brands use all three sensors keeping the stock one online too but not Claas.
Simplistically, it keeps springs the same tension on both sides reguardless of the ground contouring of the header.
 

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I can suggest a reason why your tilt is off a "degree" or so. But not why. Every MacDon head I have worked on (FD70, FD75, FD1x0), has a slightly different overall travel for the sensors left and right. IIRC, it was about 0.5V difference. I could never see any reason for this---its apparently something in the frame design.

Even though your combine "calibrates" the sensors, I have noticed before that if you have a different "travel" on the left and right sensor, it often will say that you are "Off level" when you are in the middle of the range.

The other thing that really screws this up is how far the MacDon float optimizer drops when you let the feeder all the way down, way past normal operating range. This kinda screws up a good cal--which should really only cover operating range.

You might try adjusting your sensors to the same voltage when in "operating position". Adjust everything dead level on a flat surface, set your head down to 2 (or wherever you normally run) on the MacDon height indicator, and adjust both sensors equal. Get a pile of blocks or a jackstand, and block the front plate of your feeder so the float optimizer stops when the indicator hits 0 (bottom of the normal operating range.) Don't let it drop all the way down like you are disconnecting. Then recal your combine. If that does not help, its not the sensor adjustment causing your problem.

The other nice thing about doing the above is you can "double check" your system. You're out cutting and it says you are one degree off. Stop, look at the voltages in the Diagnostics. Are they close to equal or way off? Are you REALLY tilted way over, or does the combine computer just think you are?

The other thing is, any sensor has a "accuracy" spec--usually 5-10% allowable variation. I've seen as high as 20%. Slight differences can sometimes be traced to this---just the fact that sensors are not identical. I agree 1 degree seems pretty high.
 

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The other thing that really screws this up is how far the MacDon float optimizer drops when you let the feeder all the way down, way past normal operating range. This kinda screws up a good cal--which should really only cover operating range.
Get a pile of blocks or a jackstand, and block the front plate of your feeder so the float optimizer stops when the indicator hits 0 (bottom of the normal operating range.)
Think you mean 4 Jeff, 0 is header seated position.

I did it differently but duplicated your blocking procedure and the overall header performance was definitely smoother and more exacting.
Now, if Claas would just remember each headers settings, the Claas header rigmarole calibration as a one time setup would be fine.
Having to do it repeatedly is a PITA!
 

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Discussion Starter #13
You might try adjusting your sensors to the same voltage when in "operating position". Adjust everything dead level on a flat surface, set your head down to 2 (or wherever you normally run) on the MacDon height indicator, and adjust both sensors equal. Get a pile of blocks or a jackstand, and block the front plate of your feeder so the float optimizer stops when the indicator hits 0 (bottom of the normal operating range.) Don't let it drop all the way down like you are disconnecting. Then recal your combine. If that does not help, its not the sensor adjustment causing your problem.

The other nice thing about doing the above is you can "double check" your system. You're out cutting and it says you are one degree off. Stop, look at the voltages in the Diagnostics. Are they close to equal or way off? Are you REALLY tilted way over, or does the combine computer just think you are?

The other thing is, any sensor has a "accuracy" spec--usually 5-10% allowable variation. I've seen as high as 20%. Slight differences can sometimes be traced to this---just the fact that sensors are not identical. I agree 1 degree seems pretty high.
I did notice the voltages were different (that drives me crazy!) so I tried to pick a happy medium as far as adjustment but I never did adjust to be identical where I planned on running the header.

I have gotten out and looked to see how much difference there is when it is about 0.6 off and sometimes it really isn't much, but when it gets up to 1 degree or better i'm barely clipping heads on the left and mowing the lawn on the right. I will have to try your block up and recal idea. Sounds like MacDon harvest support will be in the area this afternoon or tomorrow, hopefully they will have a good answer for me.
 

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I have gotten out and looked to see how much difference there is when it is about 0.6 off and sometimes it really isn't much, but when it gets up to 1 degree or better i'm barely clipping heads on the left and mowing the lawn on the right.
Oh, that’s different, while I have a slight right tilt reading (it’s barely visible on the feeder faceplate) cutting is level.
Are you running gauge wheels at same spring compression on both sides?
Demoed a FD1 but only cut on the ground, I do not know yet if you have to set it like an FD75, it doesn’t look any different on an FD1.
When you learn the cure let us know please!
 

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Not to totally steal this thread, but I have a question regarding my FD75 with Headsight and a Lexion. When I go to calibrate my header, I have never been able to get through the procedure. At some point it says something like left sensor missing and I am unable to complete the calibration. It has always done this, both before and after the Headsight kit was installed. It works well enough for me when I am cutting on the ground, so I haven't gotten into figuring out why. Now I would like to know!
 

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If the right side of the Macdon headers is heavier, why does Macdon recommend backing off springs 2 turns on the right side?
Would you not turn the right springs clockwise and tighten 2 turns to help lift the heavier side of the header.

Am I thinking about this wrong?
 

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I may have missed this in thread, but I always run wheels one notch lower on RHS of machine to help compensate.
MacDon always told me it was necessary as well.

Not sure if it would change sensor readings?
 

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Not to totally steal this thread, but I have a question regarding my FD75 with Headsight and a Lexion. When I go to calibrate my header, I have never been able to get through the procedure. At some point it says something like left sensor missing and I am unable to complete the calibration. It has always done this, both before and after the Headsight kit was installed. It works well enough for me when I am cutting on the ground, so I haven't gotten into figuring out why. Now I would like to know!
AHHC will NOT work with a sensor error, you are running either in RTC or pressure float mode. The fact that it did this both before and after installing the Headsight makes me suspect that either the Headsight was installed wrong, or there is a wiring problem inside your header Multilink.

#1 mistake installers make is not connecting the Headsight harness to the right port on the Multilink. You must replace the original Height sensor harness plug, not plug it into the "empty" plug. Start at the OEM height sensor in the middle of the head and follow that harness back to the Multilink. If it is still plugged in, unplug it and move our harness to that port. If that has already been done, you may have a wiring problem inside the multilink.

If you don't have the latest version of the manual, that may also help (pictures, etc). http://www.headsight.com/sites/default/files/manuals/09040120f_tilt_kit_-_macdon_7x-1xx.pdf

Anyway, Call me. I can help you walk thru a few more troubleshooting steps. Jeff--574-two oh nine-1511 (gotta keep those bots away)
 

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I may have missed this in thread, but I always run wheels one notch lower on RHS of machine to help compensate.
MacDon always told me it was necessary as well.
Think that’s right Jim but that was last year!
To run header level on a FD75 left spring compression position 2, right spring compression position 4. Think.
Not sure FD1’s any different.
Be a lot wiser in two weeks.
 

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Think that’s right Jim but that was last year!
To run header level on a FD75 left spring compression position 2, right spring compression position 4. Think.
Not sure FD1’s any different.
Be a lot wiser in two weeks.
Be a lot wiser in two weeks. That makes me laugh. We have many things to remember and even more to forget. The first time I hop in a piece of equipment for the season it takes a bit pull up the memory banks on to operate everything. Each year there seems to more I have to retrain my self on completely. Glad I enjoy it. :) Why each dealership needs specialists on different items. There is to much one person can remember these days.
 
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