Combines to 2 CR 970s

[2cr970_s]

Not yet but we have had new software installed and we haven't been able to properly test them again this year. We suspect the air intake system. It was changed from the 02 to the 03 models. I've also heard rumors that some 04 models are having similar engine troulbe. One thing that the engineers have said has to do with a resistor in the computer that reduced the horsepower. Nothing has been done yet though except for the software.

 

[en]

im running 2004 model and it is way short on power.feels like ive got brigs_stratten back there. they tell me they will dyno it,hope we get it done before year is over. i run at 100% all day long,its a good thing it is not muddy yet,then i would have to park,even though i got 4+4 and duals.

 

[tx68]

How do they dyno an engine installed in a combineIJIJ

 

[2cr970_s]

They spoke of putting a dyno on ours last year but like everything else they spoke of it never happened. All of last year we had horrible trouble, like being passed by a 9650 at one customers farm. From what I have heard though with the 04 trouble they may try harder this year to solve the problem. How much capacity do you haveIJ What kind of conditions are you inIJ Does it ever cut out like a governor is cutting in... we had that problem too but it seemed seperate from the general lack of power.

 

[northerner]

Two things a)clamps behind the engine on the intercooler. NH are having a campaighn to change them as the old ones come lose. I have got fed up waiting and replaced mine with mikalor clamps and that seems to have done the job b) the engine is designed for trucks and requires two sensors on the inlet manifold_fuel injection system. The good people at NH only use one which gives a false reading and hence not enough fuel is delivered. Dealers should know this and be able to place a resistor between the sensor that is fitted but not connected and connect it to the other sensor

 

[en]

we only get between 750-900 bu_hr we got engine pulled down to 85-120% runs good at 80%load but grain cart can not go that slow. also now we got 3" rain so might have to park them even though we have duals and 4+4. at this time we are 75 to 100 hp short.we unhooked chopper to test and were still 40 to 65hp short in my estimation.

 

[en]

since my last comment, ive learned that when boost temp goes up ,boost press goes down. in order to keep boost press up,the resistor must be changed.

 

[2cr970_s]

We have also noticed that as boost temp rises boost pressure falls. Our boost pressure will not rise above 29 even on a cold day. Can you be more specific as to what resistor should be changed or do you mean that a resistor should be added before the sensor to give a false reading to the computer. If it is a resistor that is to be added what resistance should it have and where should it be exactly. Thanks for any help.

 

[en]

boost temp should not be over 135,boost press shold go to 35-37 under 100%load. since its air to air,you need to keep radiator clean,very important. have herd that 1.3-1.7ohm resistor can help.but differs from one machine to the next. you also need updated software. we are having big problems with power.only doing 700-800bu_hr wheat.should be 1200-1500. If not corected before this year is done.there will be a different color yellow combine on my farm next year. i do not have time for this crab no more.

 

[2cr970_s]

Our combines have completely been updated to 2004 specs. The ECM's hardware and software have both been changed and we found out the details of the resistor trick by way of our dealer. The dealership brought out one of their 2004 models and we went side by side in the same crop conditions. We were the same at the begining of the day. We added the resistor, the guage said 40 lbs. We then lined up side by side again and noticed absolutely no gain. The resistor only fools the reading and provids no benefit. Today we had a little extra time after some rain and modified one combines air intake system. This will be tested next day that we can go, hopefully tomorrow. Also durring the demo a diagnostic computer was hooked up to the combines. This has been done before but for some reason they had never checked the amount of fuel that the injection system delivered. Both of our combines as well as the dealerships 2004 delivered %20 less fuel than they are suposed to. We have yet to find the solution to this but it feels nice to finally have our complaining recognized as an actual problem. Durring the entire demo, 3 CR970 combines in the field with a 9650 JD, the JD experienced less trouble and harvested the exact same amount as any of the 970's. I could never recomend anybody to buy this product at this point. If our combines were prototypes and 3 years away from production I might be happy. The support is non-existant and owning this product after waranty would be financial suicide.