Combine settings NH 8060

[Cassia]

I run a 1989 NH 8060 and last year I had some grain losses out the back. I have the top open pretty much full and the bottom open a fair bit but less so. Air mid way. Rotor running fairly fast.
Im not so worried about grain sample, instead keeping the crop in the combine is my priorit.
Any advice ?

 

[davidroberts30]

Did the grain go over the walkers or grain pan?

 

[Cassia]

Grain pan

 

[davidroberts30]

If anything like the jd then run the wind quite fast to flat out

 

[ridger]

Is the concave covered with a tin plate at the front, ours was when it came . Just the first three bits where the grain is supposed to go through, dont know what they are called

 

[Timbo]

I run a 1989 NH 8060 and last year I had some grain losses out the back. I have the top open pretty much full and the bottom open a fair bit but less so. Air mid way. Rotor running fairly fast.
Im not so worried about grain sample, instead keeping the crop in the combine is my priorit.
Any advice ?

Is the crop sprayed off or well ripe?

You could have the drum too tight / too fast and smashing up the straw and overloading the sieves .

 

[davidroberts30]

Is the concave covered with a tin plate at the front, ours was when it came . Just the first three bits where the grain is supposed to go through, dont know what they are called

De awning plates

 

[Cassia]

No de awning plates as far as I can see.
Crop sprayed, over ripe if anything.

 

[Cassia]

Drum is fairly tight and high speed

 

[davidroberts30]

Drum is fairly tight and high speed

Wind is too low then

 

[Cassia]

In my ignorance, I thought that would make the problem worse by blowing the stuff out the back.
As you probably can deduct, I’m not a combine expert!

 

[Lincsman]

Do a stop test in crop and check there is 1/3 of top sieve clear, adjust wind to suit. If you have top sieves too far open you will have massive returns, the idea is it goes through once with nearly no returns.

 

[fieldfarmer]

In my ignorance, I thought that would make the problem worse by blowing the stuff out the back.
As you probably can deduct, I’m not a combine expert!

If the sieves are wide open the air from below will pass through them with ease so to lift the chaft up to let the wheat fall through more wind needs to be applied,

 

[fieldfarmer]

Drum is fairly tight and high speed

If over ripe as you say you might be smashing the straw with too much dropping through the concave onto and over loading the sieves, try a 17 mm concave and a 650 drum speed, what does the row of straw look like? In a perfect world (never managed it yet) the straw would be complete from the point it was cut off to where the ear of grain grew, this would put minimal crap down on the bottom sieve, top sieve to wide will put a lot through the returns to start all over again creating a ever increasing problem going round and round and round.

 

[davidroberts30]

In my ignorance, I thought that would make the problem worse by blowing the stuff out the back.
As you probably can deduct, I’m not a combine expert!

always drop the wind as a last resort if nothing else works

 

[T Hectares]

Keep wind up, use the bottom sieve about a third of the upper sieve opening.
Use metric bolts as a guide to set the sieves opening.
Don't overthresh through the drum.
On something like a 8060 the walkers should be the governing factor for losses not the sieves.

 

[Cassia]

Thanks
That’s all very useful information which I shall hopefully put to good use.

 

[yellowbelly]

Crop sprayed, over ripe if anything.

Drum is fairly tight and high speed

IME, always start with adjustments at the front and work through the way the corn goes - so, drum speed (as slow as possible) and concave (as wide as possible) that is consistent with good thrashing. You only need to do enough to rub the grain out. Too aggressive thrashing only overloads the sieves later on and leads to more returns that also overloads the sieves more and you then get a 'vicious circle' of returns.
Set your sieves and fan speed as described in posts above.

 

[ballymacombsgrimme]

Where do you check the sieve and where are the adjustments carried out. Thanks in advance. I have unthrashed heads in my grain tank. Concave backed off just a tad after we got some split grains in tank. 950 drum speed. Didn't seem to be getting the unthrashed heads in the returns. First cutting with this machine. New Holland 8060

IME, always start with adjustments at the front and work through the way the corn goes - so, drum speed (as slow as possible) and concave (as wide as possible) that is consistent with good thrashing. You only need to do enough to rub the grain out. Too aggressive thrashing only overloads the sieves later on and leads to more returns that also overloads the sieves more and you then get a 'vicious circle' of returns.
Set your sieves and fan speed as described in posts above.

 

[yellowbelly]

Where do you check the sieve and where are the adjustments carried out. Thanks in advance. I have unthrashed heads in my grain tank. Concave backed off just a tad after we got some split grains in tank. 950 drum speed. Didn't seem to be getting the unthrashed heads in the returns. First cutting with this machine. New Holland 8060

I'd say you need to close the bottom sieve a bit so the unthrashed heads go into the returns.
Stop the combine and go into the back of the machine so you can see the shaker shoe. Each sieve is adjusted by a lever situated directly underneath it at the back.