red
Guest
I suppose you are at low idle alreadyIJ
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Combines feeder throat goes down slowly
Case_Farmer
Guest
im guessing you tried putting it on manual or RTC im not sure whats on a 1680 if there's a field tracker or not..but just crossed my mind when i read your post
ihman
Guest
It doesn't matter if it's auto or manual, and no field tracker Brad
boetboer
Guest
Correct me if I'm totally wrong, but isn't it just the weight of the feeder forcing it downIJ Or did this problem start recentlyIJ Our 1440 and 1660 are the same, but we don't unhook headers often, so we just let them be.
ihman
Guest
It's been like this ever since I bought it 5 yrs. ago. Maybe it's supposed to be like this but I wouldn't think so.
ihman
Guest
Yeah, is it suppose to be at high idleIJ
shellman
Guest
There is a drop rate adjustment on the valve stack of a 1680 that controls header drop rate. This is basically an adjustable orifice on the oil coming back from the cylinders and exiting the valve stack. If the header is working fine otherwise, I know of no other way to increase the drop rate with the header off. Remember the header is like a 3-point hitch. Power lift and gravity and weight briing it down. With the header removed the trapped pressure withing the header lift circuit is less due to less weight. Therefore hydraulic principles dictate that the header will drop slower. This is because we now have less pressure drop accross the down side of the circuit and therefore less flow. Hence a slower drop rate. My guess is also that this machine has had a 3rd lift cylinder installed. That compounds the drop problem. Now our header weight is spread over a larger surface area and the pressure generated by the weight of the feeder only is even less. This can also cause the feeder to settle when a lift check valve is in play. There simply isn't enough internal pressure generated to seat the check. long way around the question especially on Monday morning. Hope this helps.
red
Guest
No, low idle. You are doing it right. Ours won't go down at all unless it's at low idle.
robmgrig
Guest
on my 1660, running the engine at full throttle will make it drop faster. It won't hardly go down at low throttle