John Deere 9770STS engine troubles!

Подписаться 10 тыс.

Просмотров 9 тыс.

50% 1

2010 JD 9770sts combine with 1950 engine hrs
RG6090LXXXXXX
Model: 6090HH008 (9.0L)
Complaint was steam from the breather line and coolant consumption.
Confirmed water-oil emulsion with leaking water pump.
Decided to remove oil pan, due to leaking gasket and suspicion of what is presumed to be a sickness on these combines.
Problem
JD did not give enough crush on the piston liners (usually around 0.002") resulting in liners bouncing and either the o-rings on the liner will fail or the head gasket blows. THIS IS A COMMON ISSUE AND CONFIRMED TO OCCUR IN 9.0L ENGINES BUILT FOR 9770STS NORTH AMERICAN COMBINES. SOME FAIL AROUND 1500HRS, MANY OVER 2000, SOME DON'T FAIL. BE WARNED WHEN PURCHASING USED AND PLAN IN A ENGINE OVERHAUL.
I am NOT a registered dealer, but a road mechanic with official business license and this my second engine with the same issue. The first engine I thought was a fluke and had failed at 2200hrs.
The new engine overhaul kit used in this repair (worth over $8000 CAD) includes 6 piston liner kits with a 0.004" shim preinstalled!
total estimated repair cost $15000-20000 dollars CAD (JD dealership cost will be more)
items, already failing or failed, include: oil pan gasket, rear engine seal, main gear case seal, water pump, fly wheel center bearing, valve clearance set

Опубликовано:

30 сен 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 52

@oBseSsIoNPC 3 года назад

For more details, see the description :)

@TomBoillat 9 месяцев назад

wow i wish i would have seen this two years ago .but at least all i have to change is the fuel pump now !!! they should change there color to brown like the crap it is.

@oBseSsIoNPC 9 месяцев назад

Yeah, that particular model engine was a big fuckup on JD's end. Most of their engines are top notch!

@jandevilliers7872 6 месяцев назад

Good evening Sir, how are you doing today? I pray that you are well. I enjoy good machinery videos and your workshop is very clean. Are you working on tractors and combines. I would like to know if you are in our area please. May our ALMIGHTY and HOLY JESUS CHRIST be with you sir Kindest regards Jan

@5collie 2 года назад

i have a t 670 2010 and 4560 hrs on the engine.never overheated and always maintained and not overworked.the head gasket went and looking on the web engine model sending in h008 and lower had the liner protrusion issue.my engine ends in h003 and thinking now i have the breakdown because of incorrect engine design.a diesel should run easily to 7-8000 hrs.

@oBseSsIoNPC 2 года назад

I agree with engine use hrs. Under 5000 is pretty bad.

@bigcheese370 2 года назад

Was this engine rebuilt before? If it was then whoever did messed up on the liner protrusion. If your below spec then the liner has to be shimmed. But if it’s original engine then that’s too bad.

@oBseSsIoNPC 2 года назад

It was a factory issue, the engine has never been touched prior to this rebuild. JD has a solution/buliton out for this very problem. Insufficient protrusion.

@martinfarrell5778 2 года назад

Engine overhaul at 2000 hrs is insane, should last 3 times that.

@oBseSsIoNPC 2 года назад

Should and will, if you build it properly. Just proves that their claims of running 3000 hrs before they release a model does not always apply. Fortunately the rest of the engine is reliable.

@benadams3006 2 года назад

Great video Martian , some really good info in this video !!

@oBseSsIoNPC 2 года назад

Thank you :)

@genekarmann2498 2 года назад

The old 8.1 is way better for longevity! All of this new crap just keeps getting less reliable.

@oBseSsIoNPC 2 года назад

Amen. As mechanic I always complain how people just don't know and realize. That all the crap they do for engine management and emission improvement blows up in their faces, because hardware doesn't last as long, we burn more fuel to make stuff and burn stuff. The carbon investments surely are far higher now, than they were when we just had efficient engines. A bit over built, lasting and big HP.

@jamesgallia0147 2 года назад

I did a egr delete on a cpl of deeres

@oBseSsIoNPC 2 года назад

That makes you a friend. What a waste those systems are.

@Thewaywefarm Год назад

We were going to pull our head off in the combine (9670) after watching this we are going to pull it out and rebuild it! 3100 hours and it was making bubbles in coolant overflow tank. Well done video!

@oBseSsIoNPC Год назад

Thanks for the kind words and God speed! These combines are worth the trouble!

@Thewaywefarm Год назад

@@oBseSsIoNPC We’ve run it for 2 years and we love the capacity and quality job it does. Thanks for the advice.

@oBseSsIoNPC Год назад

@@Thewaywefarm and they are still easy to fix, parts are reasonably priced and they stand up way better than most!

@nathansparrow1416 3 года назад

What engine code is that and year of combine ? I have a european T 560 with a 6090 engine and now I'm wondering about it

@oBseSsIoNPC 3 года назад

RG6090LXXXXXX 6090HH008 2010 Good call, I will include it into the description. As far as I can tell, it is mainly the 9770STS NA that is affected. Let me know what you find out! Thanks!

@LtColDaddy71 Год назад

I’ve seen many 9.0’s pushing between 10-20k hrs that have never been touched. Aside from having a tuner and manifold from JD Marine that isn’t an EGR cooler. A smart guy would have a few of those laying around. Oh, and it will dial all the way up to 550 hp and still burn 1/3 less fuel.

@oBseSsIoNPC Год назад

Yeah, they definitely messed up big time on this one. That is what happens when you source out your parts and quality control doesn't match. No different than the delaminating issues on the 6.8L with variable Turbos, because the ECU allows to run fuel and air pressures at low RPMs that cause improper combustion and multiple flame fronts, straining the top of the pistons. Deere engines need at least 1600rpm and love running at full throttle. They are made for it, like generator engines, they only know Off, idle and Full throttle:P

@hokie9910 5 месяцев назад

If you rebuild this engine, is there a way to make it better so you can go 10,000 hours before next rebuild?

@oBseSsIoNPC 5 месяцев назад

That's what I have tried to do with this rebuild. The engine has no reason to fail now that the crush and liner protrusion is on perfect spec. Everything was done to meet tightest clearances and all the break-in has been done meticulously. The only thing we can already predict are the water pump and injectors as "consumables". As long as coolant and engine oil service are done properly by the new owner, it should last 10k+ no problem. We keep an eye on the turbo as well. That's a yearly check after you hit 3000hrs anyway. They are known to last 5000, minus the fancy vane adjuster motor (actuator) that fails when ever it feels like it.

@hokie9910 5 месяцев назад

@@oBseSsIoNPC ok gotcha, I guess the protrusion on these engines from factory was way off..? Would oil analysis help identify issues?

@oBseSsIoNPC 5 месяцев назад

@@hokie9910 indeed that is the only real problem, other than ignoring poorly firing injectors and then allowing them to burn up the pistons. It might show up with oil analysis, due to the coolant seal rings failing and slowly, but surely allowing coolant to mix with oil and not all machines are affected, but 9.9 out of 10 machines will indicate with excessive white blowby. Also consider that about every 3-4 thousand hours the pilot bearing will be wore out and needs replaced. There are many small issues that warrant a engine rebuild around 4000hrs, doesn't mean it needs pistons or liners.

@hokie9910 5 месяцев назад

@@oBseSsIoNPC it’s another reason more people should probably look at keeping olde equipment, all of the weaknesses are known and they have fixes. The new stuff, the farmer is the Guinea pig. No thanks.

@oBseSsIoNPC 5 месяцев назад

@@hokie9910 you got it. All I work on is older equipment, because I refuse to support that new junk that you never really own.

@alanmanuel1245 Год назад

do all the engines have the liner issue? Ive just bought a 2010 with that motor in its done 3800 hrs do i pull it out and rebuild it now?

@oBseSsIoNPC Год назад

Not all do, no. Less than half of them have the potential to fail. At those hours you are wise to replace the waterpump and flywheel centering (pilot) bearing though. So doing that kind of work and investing another day worth of Labour, you could pull the head and measure the crush. Liners need to protrude min 6 thousands of an inch, with a preload. They are worth the trouble! When they fail, they give you a 50hour headsup. They will cause excess blowby (water vapor) and goo buildup in the breather neck on the head. So you have 50 hrs of runtime to fix it, before the engine attempts to lubricate itself with water. Waterpumps don't necessarily give you a warning, make sure the weephole is clear. If there is a hint of coolant, CHANGE IT NOW.

@johnlorenz2855 3 года назад

Sounds like it's a pretty shitty engine. 2000hr rebuild as preventative maintenance? That's absurd!

@oBseSsIoNPC 3 года назад

"Preventative" is meant as a joke of course. These particular engines clearly have been made with a flaw that requires a premature overhaul. most JD engine don't need looked at or overhauled for 10000 hrs. Which is more than reasonable.

@whathasxgottodowithit3919. 2 года назад

2000 hours? that is not good, less than two years in the field. I guess J.D. will cover the cost?

@oBseSsIoNPC 2 года назад

you wish! it may not have too many hrs, but it is too old, for any claims, even though they are clearly admitting to production mistakes.

@ricknaegele2144 4 месяца назад

2000 hrs? What a piece of crap

@oBseSsIoNPC 4 месяца назад

"what a piece of crap" certainly applies to the person(s) that decided, that 0.001" crush on the liners is enough. JD engines are REALLY GOOD in general and they outlast most others. Until they "improve" them or seemingly skip quality control, because they outsource the manufacturing to the lowest bidder. I see it as opportunity to really dial it in and make it last 20k hrs. Of course the customers pay dearly for it.

@ricknaegele2144 4 месяца назад

@@oBseSsIoNPC like their 9 liters that are scattering at 6000 hrs. Customer pays. They don’t care.

@oBseSsIoNPC 4 месяца назад

@@ricknaegele2144 if only JD admitted to the problems openly and invited customers to have their ECU updated. Because all the engines with variable turbo, especially in tractors could run with unhealthy settings on the mixture side and the dangerous injector commands. JD engines always loved to run over 1700rpm and people thought they safe fuel dropping it below that, demanding power and the ECU complied, causing delamination of the pistons, due to the extreme stresses caused at such conditions. It does apply to the 6, 8, and 9L engines. Let's also look past the internally mounted water pumps that fail silently and contaminate the engine oil with coolant. So yeah, you gotta know what you got and stay on top of those "service items"

@ricknaegele2144 4 месяца назад

@@oBseSsIoNPC trouble is, those aren’t “service items” lol.

@oBseSsIoNPC 4 месяца назад

@@ricknaegele2144 haha, yep

@mbulahenistanleynemusunda156 2 года назад

How do I remove water pump

@oBseSsIoNPC 2 года назад

That pump is very difficult to remove indeed, due to the retainer ring behind the impeller. I found that a plastic wedge to pry on and a good set of needle nose pliers gets the job done. Remove the front cover and locate to notch behind the impeller, compress the retaining ring with the pliers and pry the pump out. If you have someone else there to assist, then have them pry with a second bar. I had some stuck pumps where I cut part of the impeller off, to reach the ring better and tie it together with a wire or zip tie. When installing the new pump you get a tool with pins that pushes on the housing. MAKE SURE TO NEVER SLIP OFF THE HOUSING OR YOU WILL PUNCTURE A HOLE INTO THE SEAL. This is a horrible design, but the pumps work well.

@tf7274 3 года назад

Just chip it... it'll be fine...

@oBseSsIoNPC 3 года назад

Right, load up enough to get more heat into the liners and seal the coolant leak through a tighter fit! Good idea!

@farminginmexico6497 2 года назад

How do you take out the engine

@oBseSsIoNPC 2 года назад

The right way to doing it is with a heavy crane that can lift the engine and engine gear case out at the same time (move the auger out enough to clear it, can be moved after, by undoing the hyd hoses and moving it by "hand"). I however did it at the farmers shed and I disassembled anything attaching the engine to the frame as well as the fan and pully, loosened the engine gear case frame bolts, unbolted the gear case from the engine and lifted the engine out with an excavator. The biggest pain in the ass are the shields. The tricky part is moving the engine away enough from the gear case, to clear the shaft and then the housing. Be aware of the steel plate being bolted through to the gear case with 4 bolts in the bottom. Just use a prybar to push the engine of the gear case, from the dowels and shaft. Removal and install with the front support plate is impossible, definitely remove that and use heavy bolts and lifting eyes on the cylinder head instead. Take your time to try and balance the tilt of the engine, use two separate chains, front and back so you can adjust tilt. This is crucial during reinstall, because of the dowels and shaft alignment. A telehandler with crab steering and frame tilt works best, beside a roof crane.

@brandonpetersonisubbackify98 3 года назад

We got a 20111 9770 and had the dealer help alot and no one can figure out what's going on after awhile running it it just stops and shuts down and you have to turn off and on to start it again its random it could last an hr or 30min but just shuts down they'd updated software pumps ect. You have any idea? I feel it's in a wire somewhere or something overheating and killing the engine?

@oBseSsIoNPC 3 года назад

That can be anything and without proper diagnostics its impossible to tell. The fact that they replaced very expensive parts already does not speak of knowledgable staff. I never had a 9770 do this, but it could most certainly be electrical. If it takes a long time to crank and start again, its fuel related. If it just shuts down like a key turn, its electrical. Could be a bad ECU, wire, sensor etc. If there are no codes, its a part of the system that is not monitored for faults. Keyswitch, power cable, grounds