Anybody else have their 9570 combine engines shelling out?

Gambles

Well-known Member
I just got off the phone with my brother who has his 9570 combine engine completely ruin itself. So he was wondering if this is a manufacturing defect or if John Deere was just having bad luck with cylinder #4. (More on that later)
My brother was going to look at the exact year and serial number, but he thinks his combine is a 2008 model. His combine has about 1500 hours. He said the engine broke a valve with absolutely no warning. He has been informed that the total cost of a new engine will be $16,000.
Now, here is where the question of a manufacturing problem arises. The local John Deere tech told him that this is the third combine that he has seen this happen to in the last couple of weeks. Each combine broke a valve with no warning, each combine had this happen to on cylinder #4, and each combine had this happen right when it was close to 1500 hours. The tech said that rumors from Mother Deere say that it's the EGR that is causing the problems because it feeds most of the exhaust gas right into cylinder #4. Maintenance and service on this combine by the John Deere tech has been meticulous and by the book.
Any comments on this?
 
Yes, the 6068 is plagued with problems in combines, but not so much with the same engine in the 7X30 series tractors. At the dealership I work at we have had about one per year for the last 4 years. It started out as a push rod problem where the ends wore down and there was too much valve lash, then even with unworn push rods the engines still liked to drop valves. I personally think its a power problem and there asking way to much out of that 6.8 engine. The magic number seems to be about a 1000 hours plus or minus 200 hours. So far none of the new engines we have built or installed have had any issues. I hope this doesn't become a regular thing where you have to rebuild the head every 1000 hours as maintenance.
 
When I was working at the dealership I replaced one engine in a combine due to valve failure. There was a Product Improvement (recall) that was to address this problem. Is it possible this machine "slipped through" the Product Improvement? Stranger thing have been known to happen. The owner should be able to have the dealer check this machine against the Product Improvement log. Even if they are not the original owner Deere should have record of work done to the machine.
 
We have had 2 per year for the last 4 years go down due to busted valves in 9560 and 9570's and a 4720 sprayer and this year a 7830 did the same thing. I wouldn't wish a 6068 on my worst enemy.
 
The 9770 combines have had motor problems and a friend of mine that is service manager at a JD dealership had 3 in the shop at same time with engine problems all with 1000/1500 hours.My neighbor just spent $12K on his 9770 with 1330 engine hours.We have a S670 and yesterday the Hydro just cracked the case but it was still under warranty so they brought us a 9870 to finish.Only problem was it was full and auger was extended but hooked hydraulics to tractor and was able to fold auger and get head off just left grain in tank.
 
Didn't deere offer two different engines for the 9560 combine?
If so which is this one, the smaller or the larger engine?
 
It is the 6068 in the late "bullet rotor" 9560s. Not the 6081 in the early 9560's. I bet the problem with the 9770's engines was wrong sleeve protrusion. We had a 9.0L in a 4930 sprayer do that and it has been said that we will see more of those 9.0L with liners that move because of the protrusion being wrong.
 

The 6.8L/414cu" Dubuque has been around since the 1970's in various incarnations.
Sounds like some engineers,accountants and managers "improved" something. Either in metallurgy, design or assembly while keeping Tier III or IV emissions in compliance.
 
I've got a 1995 9400 combine with the 6.8/414. Until I read this I thought they were 1 of the best engines Deere made. Mine has 3200 engine hours and doesn't use any oil and runs very smooth. I'm with you B&D Deere changed something and apparently not for the better.
 
I believe the issue came about when they started using the 4 valve head configuration. The 6.8 litre engine was pretty dependable before that.
 
6.8 L engine is it a full tier IV? If so, they had some issues with bad head gaskets, connecting rod bushings and a few other issues early in their manufacture.
 
(quoted from post at 00:39:46 11/07/14) I just got off the phone with my brother who has his 9570 combine engine completely ruin itself. So he was wondering if this is a manufacturing defect or if John Deere was just having bad luck with cylinder #4. (More on that later)
My brother was going to look at the exact year and serial number, but he thinks his combine is a 2008 model. His combine has about 1500 hours. He said the engine broke a valve with absolutely no warning. He has been informed that the total cost of a new engine will be $16,000.
Now, here is where the question of a manufacturing problem arises. The local John Deere tech told him that this is the third combine that he has seen this happen to in the last couple of weeks. Each combine broke a valve with no warning, each combine had this happen to on cylinder #4, and each combine had this happen right when it was close to 1500 hours. The tech said that rumors from Mother Deere say that it's the EGR that is causing the problems because it feeds most of the exhaust gas right into cylinder #4. Maintenance and service on this combine by the John Deere tech has been meticulous and by the book.
Any comments on this?

The engine in our 9570 with 1,200 (engine) hours on it just took a manure. Dropped a valve. Needs a new long block. $20,000! Our family and our farm has always been green snd yellow. My Grandpa is known as "Grandpa Green" in the area. Honestly this is the first time I have ever heard John Deere mentioned with disgust. Is this a sign of the times of things to come? No mention of this issue from the factory, dealership, salesman, etc. I know things happen sometimes. But that has never been the case with all of our years of running Deere equipment. We've never had to worry about crap like this. SMH
 

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