FD140 tilt issues - Page 2 - The Combine Forum
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post #11 of 42 (permalink) Old 07-30-2018, 04:24 PM
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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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post #12 of 42 (permalink) Old 07-31-2018, 07:13 AM Thread Starter
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This one has all 3 sensors

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post #13 of 42 (permalink) Old 07-31-2018, 07:22 AM Thread Starter
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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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post #14 of 42 (permalink) Old 07-31-2018, 08:33 AM
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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, thatís different, while I have a slight right tilt reading (itís 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 doesnít look any different on an FD1.
When you learn the cure let us know please!
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post #15 of 42 (permalink) Old 07-31-2018, 09:16 AM
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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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post #16 of 42 (permalink) Old 07-31-2018, 09:23 AM
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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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post #17 of 42 (permalink) Old 07-31-2018, 12:21 PM
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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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post #18 of 42 (permalink) Old 07-31-2018, 01:51 PM
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Originally Posted by ShinyNewFarmer View Post
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/defau...don_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)

AHHC specialist
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post #19 of 42 (permalink) Old 07-31-2018, 03:49 PM
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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 thatís 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 FD1ís any different.
Be a lot wiser in two weeks.
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post #20 of 42 (permalink) Old 07-31-2018, 04:18 PM
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Think thatís 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 FD1ís 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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