Combines Header Height Control

you're sensing rod is not going all the way to the bottom when raised. stuck cable . bad pot, too tight of springs, stuck rod.

I have had the exact same problem. I cleaned the electrical plug_socket connection real good and it works like new again.

sounds like you have the broke wire and as it was lowering it was breaking contact. See if you have voltage (use test light) at the middle spring on Med height to start with then follow below post trouble shooting.

Had one on a 52 do the same thing this fall was working fine than for no reason quit, what I found was the power feeding the header height module, I think it is the orange wire by it self under the console was not crimped good enough from factory and took till now to give trouble,hope this help also check the where all the ground wires are bolted under console.

I agree with tbran that a broken wire is probably the problem. The most likely place is where the wire bundle flexes between the main frame and the left rear of the feeder house. Depending on whether the head is up or down the broken wire may or may not be shorted when you do a continuity test. If you access the individual wires at this hinge point area, you can usually find the break by flexing each wire and watching and feeling for a weak point. Have a safe harvest Gamaman

Happened to me this year on my Header Control. It was a broken wire by three spring control on the head.

Thanks guys, I appreciate all the feed back. Have put machine and head away for the winter but I at least know what to look for. Will make finding the problem easy I'm sure.

Thanks guys, I appreciate all the feed back. Have put machine and head away for the winter but I at least know what to look for. Will make finding the problem easy I'm sure.

G'Day vern in ne ks If you have the time before next season I would highly recommend that you put the later model AHHC onto your 500 flex!! We changed our 530 flex over to the later model AHHC (That's the one with the little box on the right hand pillar and Three Potentiometers one on each end of the front and one on the feed house, this make a big different to the adjust ability of the HHC. I would also recommend to anyone with a Flex 500 to take out the back Gal sheets and replace with new thicker gauge Gal sheeting and with no fold in the it as well!!! (the sheets should be flat along the back!!) as the old sheet's has a fold along the bottom of it and this makes the back of the front (good english uh! Hmmm) not as ridged as it should be!!! I do think there is a AGCO up grade for that somewhere NDDan or Tbran would you guy's know of thisIJIJIJIJ Rolf

I gather you are talking about the vertical sheets at back of header (front). We haven't had a problem with these but I understand that they add to the structural strength of header (front). I suppose the 700 and 800 addressed this with the heavier top frame. I would rather they stiffened the sheets you talk about if they needed more strength. They seem less worried about adding weight these days. Don't know of any update kit hear in the states but maybe there is down there. I think you have areas where headers really get a workout at high speeds.