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Panhandle of Ne. | All I know is this. We have owned over 30 JD combines from the 00 series through the 70 series. We had one 9600 that had over 5k engine hours and never any engine problems. We have had several power issues through the years, most of them were resolved. We used to run 3 combines and trade every year for many years and now just own 1-9770, an '08 model, with 550 engine hours and it is being rebuilt right now. They brought another 9770 out, a '09 model, for us to finish wheat harvest with and we were the first to run it after a complete O/H. It had around 650 engine hours. I don't believe it is a operator/ maintenance problem at all. I don't believe it is a tier IV problem either as the mfgs. have known since 1990 that these new low sulphur mandates were coming and have had plenty time to get it right. I know of a new '10 model 9770 that when they were backing it off of the truck from the factory it was knocking. They had to put a new crate engine in it and yes they do have new crate engines. Most crate engines are factory rebuilt, but they can pull a new engine off of the assembly line. I know of another 9 litre in a 8530 w/1800 hours that broke a crank.
We have had in the neighborhood of 60 of the 8.1 engines in tractors and combines and have NEVER had an engine failure. So, this tells me that JD has a problem with the 9 and 13 litre engines. I don't need any statistical data to know this, pretty simple. | |
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Bad engines in 70 series John Deere Combines
