Combines 2002 STS s and TIER II Engines

[budlight]

Do you own a STS machineIJ We just ordered a new 9650STS and new 893 and 930F the other day. We had to buy before the 3rd of Jan. in order to get a 2% discount. We got a total of about 9000 taken off for paying cash and buying before the 3rd. NOD, if you own one what do you like and do you not like about it. We have never ran nothing beside a cylinder John Deere machine. Also we got the small wire inserts for harvesting wheat....they said we needed them. If was fun to see during the trade how all of the dealers wanted us to tell them what the other dealer quoted us in price. During our trade process we got quotes from 4 dealers. 2 of those were between 15000 and 20000 higher than the other 2 dealers. the other 2 dealers were within 2000 of each other, so we got the closest dealer to us.

 

[jeff]

Are you a lawyer looking to drum up businessIJ If so, get lost fast!

 

[greenstrat]

looks like you are pretty angry about the lack of power with your new extremely expensive iron. For what they cost, the company should bend over backwards to make them as perfect as a Mercedes. They instead treat you like a clod.

 

[9880sts]

hello we hat a case selfpropellet chopper (case mammoth 8790-570hp in 1999) with a v8 engine from mercedes and it was sucks a good name is not a garantie for a good engine they all can have trouble with the new emmisions JD Still JD and Stable

 

[l]

Our 2002 9750 STS performed well during the 2002 season except for the power problem when it was really needed. Even the boost during unload was noticable. Our dealer was responsive and tried several times to solve the power issue(as directed by JD). Dealer says a solution is coming in the new year.

 

[greenstrat]

Well, a while back I think on a different posting board an owner of several 96 or 9750 STS (can't remember which now) machines was telling of just how stable deere has become. His shiny new machines would not run as well as darn near anything in the field with him and it was so bad someone actually thought it would be a good idea to check it out from the factory.. they brought out to the field a pickup pulling a dyno on a hi lift trailer and chucked it up to one of the machines and wrung it out for most of a day. They left and I don't remember him getting any satisfaction out of the deal. looks like electronic control is great for the space shuttle but dirt, heat_cold extremes and lots of vibration have not been factored into anyones design yet. Have a great day! GS

 

[JDOUG]

The newer engines in some combines and tractors have a problem with the mapping of the torque curve in the engine controller. There is a small flat spot or dip in the top the curve. Some owners will probably never notice it unless they are operating the engine at that particular RPM range. I'm a John Deere tech at a dealership and just attended a school on the new tractors. We did a torque curve test on an 8420 and you could see it on read out. The other post is correct, a repair is coming out after the new year. The dealer will down load a new program on to a lap top and up load it into the engines controller. We did something like it on a chassis controller on a 7810 with IVT transmission. It's simple and quick. As for the electronics, I'd rather down load a new ECU program to correct a fuel injection problem than have to remove inj. pumps, nozzles, etc. TierII and, later tier III, is giving every engine builder fits. There is no way the new engines will be able meet the requirements without some help from electronics. As a side note, if you have a new 8.1l engine with the common rail injection set-up, be very particular about your fuel. These newer engines (I care who builds them) are going to be touchy about fuel quality. Sorry about the long post but thought you might like to know whats going on.

 

[mjb]

We have run a 9650STS for the last three seasons,this last year(2002 model) did give some some problems with power as compared to the 2001 model. The power problem was small as compared to the problems that we experienced with the lower variable speed feeder house drive. The drive is basically the same one used on the 7700 and has not been changed or upgraded since. We went through seven belts,two hydralic cylinders, two sets of bearings, height sensors, stuck lower sheaves and a lot of down time. Our situation was running a 1293 head, 200+ bushel corn, under 18 moisture. Ours was not an isolated problem. There were at least 10 others out of our dealership that had similiar experience. the 9750 was even worse. Our dealer was good at repairing but had no option other than replace the broken part with new, which didn't solve the problem. The only way that we could finish was to strip off all the appropriate shields to reduce heat buildup and then operate by a heat sensor reading on the belt. This meant that we reduced ground speed to about 70% of capacity or roughly the same as we used to do with a 9600. This dropped our productivity from 3500 to 2500 bushels per hour. At this speed we had absolutely no power shortage. I have been a long time JD owner and will probably stay that way, but it appears that in the race to have the biggest combine(hp,capacity)that maybe the engineers at Deere have failed to consider all the effects that dropping a bigger engine into an existing design might have. So far no response from Deere.

 

[clean_sample]

we"ve run the 2002 9650's sts's and we had nothing but trouble with them. we had two of them burn up this yaer because the engine was getting to hot and the straw was catching on fire by the manafold. we did not run the choppers this yaer and if it was windy at all the rad would plug and over heat the engine.