John Deere S680 ProDrive hydrostatic pump failure.
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- Опубликовано: 7 сен 2024
- In this video I finally get to do the repairs on the John Deere S680 combine that suffered a hydrostatic pump failure in the field. I recovered this combine from the field and had it hauled back to the shop. We cannot run the engine on this combine because the pump is locked up. A pump failure of this magnitude is probably the worst hydraulic failure you can have on a combine! There’s just metal everywhere! I am going to have to replace a lot of parts to get this combine to move again. This is one of the most time consuming jobs you can do on a John Deere S680 and you don't want to miss it!
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Just amazing how much damage can be done with such a small part failure. Extremely costly. Thanks for another great video. Everything is well explained.
I feel sorry for the owner, such a big failure won't be cheap! At least the repair is in good hands. Your videos are always fascinating, both for the way you explain the steps you take, as well as the methodical way in which the work is done. Congratulations and keep up the good work!
I feel more sorry for ZK ; )
@@JDFIGHTER87 Rather callous thing to say. An unfun task for ZK vs losing out on livelihood big time. Farmers are already running on razor thin margins.
In a lot of situations like this people will replace the hydro and filters and flush out what they can. Then they will trade it asap so as not to spend the money for proper repairs.
The shot of the pump coming out with the stepladder for scale really gives you a sense of how big these machines are.
I had Covid for over three weeks from Dec 23. Prayed to die. I happened to see one of your videos. I think it was the water pump disaster. You helped me feel like life is worth living again! It was after watching the axel bearing fix that I got excited and felt good enough on that Friday to get up and out of the house. I want to thank you for putting your vid’s up for us to see and follow. Looking forward to part two of S680
I’m glad you’re doing better!
These videos have a zen-like quality to them. His voice is so relaxing. I would be like " I gotta fix this damn tractor wth"
Wow this is a lot of work. It's a shame there can't be some kind of hydraulic pump output filter to protect all the downstream secondary damage and contamination. I love how you take everything in you stride and are professional in all aspects. Great video, thank you.
There is, you can install screens to the pump outlet that will catch the majority of that mess. Im just guessing John Deere is either too cheap or too inept to use them.
Yes it seems like an output filter of the proper capacity and mesh size along with pressure sensors on both sides of the filter to alert the operator when restriction is getting too great would have prevented all this mess. GREAT video, I really enjoy these. Last green combine I worked on and owned was an 8820.
We had a rear wheel motor fail on a S690 this fall, wiped out the hydro and all associated components, thank goodness for warranty or it would have been a nice 90k dollar bill to pay.
Another exceptional video as always. It takes someone that has very knowledgeable skills to perform this type of task. Your schooling has paid off, you're awesome. I try to watch very video that you put out. You explain everything throughly, easy to understand. Definitely catchya at the next one. Keep the knowledge coming. Stay safe!!
I love how your not overwhelmed by a big job it’s a lot of work good on you sir
Whichever john deere outpost trained and now is lucky enough to have you as a tech is freakin lucky, I'm one to give credit where credit is due. I've seen you in the just the videos alone do things that a everyday tech can't do on his best days. Keep up the great work big dawg 💪 and thank you for the videos they HELP ALOT!! I wish you a great upcoming work week man 🤙
I like your use of using a punch list. When I was in the Deere Ag shop I would have a punch list when doing a big job like this. I never worked on a combine but have done several major overhauls on larger tractors and generator units.
great job! I once did similar work, but the combine was not all-wheel drive - Challenger. but there was an oil cooler, that also had to be replaced!
I wrote the comment without watching the video, I thought that the radiator was not here. After watching to the end I realized that not everything is done yet :)
We have a case quad track In the shop, hyd pump went out and a tech changed the pump only, didn't flush or change any other part of the system. Definitely need more techs out there like you.
I like your “every size wrench” 😂 Never seen that done before, looks like it works well! Thanks for that tip! 👍 Wow what a mess this failure is! 😮 Never seen it on the New Holland or Massey combines we sold and serviced, guess we got lucky! Thanks for the video, look forward to part 2!
That could be a good business. Retrofitting Mico filters at very strategic points.
Hey Zeth, another great video. I like how calm and cool you are dealing with these major problems. Keep up the good work.
The pneumatic line remover is my favorite too
wow, what a manufacturing failure. It's great that JD will cover the cost of this repair, considering it was their failure.
We had a s670 come into the shop that had the same issue this year. Best of luck finding the end of the contamination. We flushed lines for 3 days just trying to chase all the contamination down and you won’t find the end of it. There comes a point where you just have to trust the filters will do their job and get rid of the contamination. We replaced the whole pump stack, hydro pump and motor, both hydro hoses between the pump and motor both hoses to and back from the cooler and the cooler. I’m sure I’m missing some but that’s most of what we had. We had the customer change filters after running it a day and I have yet to hear of any issues
I only flush hard lines. I replace the rubber hoses.
Hydraulics got to love them thats massive job.
I am an aircraft mech for a major airline. When we have failures like that in a system we have a machine called a decon machine that we run for a couple of days that filters down to the 2 micron size removal. I would think they would have the same for Ag repairs.
Looking at this for 2nd or third time. You must get all the tough jobs. Like always really enjoy this heavy equipment video on the green iron. Thanks for all the hard work
I was only able to watch half of the video earlier and then had to head out to do a side job, just got back and finished it. Man I really respect your skill ( and iam willing to be work ethic ) I do mechanical work, and ive considered trying to get into AG, but damn I wont lie it looks soooo much more intense than cars. ( Obviously diesel work is by nature heavier etc... ) but AG seems like an even crazier level. Your videos are great and your skill impresses me! Keep it up!
I equate the startup you described as what if I were suddenly woken up and immediate forced to bench press a Buick...not good!
This is a major repair...hope you get the back ordered parts soon.
What a catastrophe, that was one extensive repair. Great video and I am going to take you up on the oil dry stock tip....
That is a massive job. It sucks that there is so many parts that need to be replaced instead of cleaned. A repair like this will have everyone nervous both the customer and dealer because the risk of contamination and failure has to be high
That’s a nice deal you got there with the board to keep track of what’s been done and what hasn’t. Doing a big job like this and also recording. Nice video
@16:30 or so;
Thank you for the explanation on why "replacing' the rubber hose rather than "flushing" them.
Truth is here in March 2022 in Chicagoland, buying new hoses where for the cooling system, or automatic transaxle system, maybe even steering system is likely cheaper than gallons of fluids which to flush said parts
You got yourself a project there. My neighbor has a hydro rebuild shop. I’ve been over there when he gets one of these that were destroyed . Unbelievable the damage. Good luck
Thank You so much for sharing your videos with us 👍
I have been doing a contamination on a Deere 470 GLC excavator. The pumps failed, I believe they failed due to running the machine at full production before proper warm up and we live in a cold climate. But the entire hydraulic system was contaminated even the pilot system, but I had to remove every hydraulic component and hydraulic hose/line had to be either cleaned fully or replaced. It's been a good time
Absolutely great video as always
Pliers were the star of the show today
Love the tools
Keep that green Iron moving !
Love and respect from Evros Greece (6145R ,W540)
Lots red combines have a big filter on the output side of the hydro and an accumulator. Seems like a great idea.
It looks about like what happened to our S780 this year with less than 50 hours on it... no fun!
I would think a massive internal failure like this in the main pump was most likely caused by a factory defect. These pumps shouldn’t fail if proper filter changes and fluid levels are part of regular maintenance. This repair bill has to be into the many thousands of dollars. Is John Deere helping with any of the costs? This would be a major financial hit to a farmers budget. I find you videos fascinating and remarkable what you get into. Love the channel
Thanks. This combine is out of warranty and unfortunately these failures do happen every once in a while. I’ve done three so far. But that’s only 3 out of hundreds of combines we have running. There are many reasons these pumps could fail and sometimes even if maintenance is done correctly, they can still fail. When this combine is fully loaded, it can weigh almost 100,000 lbs. that’s a lot of weight to try and move through the soft and sometimes muddy field. We are asking a lot out of these pumps and customers usually don’t cut them any slack.
I'm not familiar with the John Deere system, but in general if you bring a hydrostatic drive to a sudden stop (hit something), this will cause the charge pressure to drop to zero and can cause catastrophic damage to the hydrostat. I've seen it happen many times. I don't know if JD has protections in place to prevent this.
@@Topdogswmi I experienced some rexroth swashplate bearing faillures as wel, all around 6 to 7000 running hours (airport equipment), Rexroth Germany engineer and hydraulic OEM engineer spend some time with test equipment on similar running equipment. We ended with new pumps with a slightly higher volume and added a small accumulator on the boost pump circuit. seems to solve the issue.
Yeah but youre also assuming grade A maintence was performed. Alot of farmers handle their maintence to make sure this doesnt happen, and these systems are built strong but if you push your maintence intervals, forget some and overwork your equiptment Its not crazy to imagine this happening. I think I share the same feelin asthe original commenter here though. Ive watched all of Zeth's videos and I DONT want to see giant multi-national equiptment juggernaut JD rip off farmers. Part of buying this equiptment and owning it out of warranty is understanding that failures will happen and when they do you might be out 10, 20 or 30 grand, and that sucks. If you go back some videos on this channel youll see that ( i think it was an 8r ) had its engine go out, and deere paid for the complete replacement and part updates for the customer... so its good to see that they DO take responsibility when its on them. I think alot of that is up to the tech too though... If deere tech pay is anything like the auto world, customer pay gets you more money where as warranty work pays you less. This inclines people to reject warranty work and put it on the customer. Zeth seems like an honest guy and hopefully most of his peers are because when its deeres fault, they def. need to pay.
I get paid by the hour. Doesn’t matter who’s paying.
Thanks for sharing the air gun wrench technique👍
I'm surprised at the frequent use of the knipex wrench, rather than using the proper sized spanners.
Props to you. The complexity is incredible.
I did this job a couple years ago, that the customer ran until it wouldn't move, and found metal in EVERY valve on the machine. I had to clean or replace every line, valve, and cylinder on the machine.
Best of luck.
I am convinced that Rube Goldberg is the lead engineer at the Deere combine factory.
Thanks for the tip with the air hammer !
Those things need a hydro return filter or something to isolate catastrophic failures. I know of a guys s680 rear wheel motor went out and ended up with a $100k bill
That looks like a full day of just researching parts numbers and getting all those parts ordered. What a disaster!
I like watching how people accomplish the same thing but differently when there is not much available help.
So many details to tend to!
Hydrostatic is great until something goes wrong. My Linde forklift get hyd oil and final drives serviced at half intervals as oil and filters are cheap. 25000 hours and still going. What a job on this machine!!
Linde is an other level than Bosch Rexroth ;D
I love how my bay in the shop is quite literally the same width as the distance between the two beams on your support wall in the shop, and about 60 feet in length from main door to bay door. I get one down machine and I am screwed lol. I'd be a pig in heaven if I had even a 1/4 of your shop space. I stretch out a backhoe and bam I work on stuff outside cause I cant work in the bay anymore.
Very good diagnostic programme on this ,achine, this time? Best Regards Peter Eriksson Sweden Europe 😅😊😊!
when you get any warning of drive problems its best to just switch off and check for metal contamination in filters first .
I agree
That's a big time consuming process well done sir
Thank you for giving me something to watch while I'm out of work with a herniated disk in my lower back. Amd continuing to teach me new things. I work at Reynolds farm equipment in Indiana. Watching your videos helped me see what I was getting into before I started there 6 months ago. I love every minute being there. I've worked on semis and everything material handling before i started at deere. John deere has been a dream since I was a kid. I am missing work like crazy. I still get to farm with the family on the side as well.
Good morning fellow Hoosier. I live 20 minutes East / Northeast of the Mooresville Reynolds. Heal well & good luck to you Sir.
Yeah i just had surgery for a herniated disc in april and then had to have a second surgery to fix a spinal fluid leak caused from the first surgery. I was down for a long time. Spent 11 days in the ICU. I suffered for 3 years working through the pain before they would do the surgery. Hang in there!
Holy shiiizzzitttt. We would call several of those parts "thing a ma jigs" and "do hickeys".
Great videos and thanks for doing them!!
After watching this video, I'm happy to have a 1995 Claas Dominator 48s. Simple and easy to work on.
That's a nice tank buster u got there
Excellent video and excellent work there Zeth, I wouldn't want to be faced with the invoice for this mammoth repair!
I'm a civil engg guy, but i like mechanical engg things 👌. from 🇮🇳
You really need crane system. We just moved from old shop that had chain hoist in single rail so it limited you a lot. Took more time getting others to help or fighting with parts. New shop has overhead cranes WOW what big difference should help big time with work time. It's a/c shop too strange to have all doors closed too
Wow! At some point I think I would make a cup of coffee, stand there and stare at lines, hoses and wires. All the while thinking, "Dang I hope I don't forget to connect something back up!"
Wow. You mind blown me with that air hammer.
Blimey what a nightmare of a job 👍👍👍👍
Hey there ZK, I hope you're well and good!
Man oh man what a job that is! Working your way through the hydraulic system, one piece at a time, is extremely time consuming, but it must be done, to prevent another failure.
As always, I'm impressed with your attention to detail, and your thoroughness.
I hope y'all have a good one!
"Nothing Runs Like A Deere" 🦌👍🇺🇸
Thanks!
@@ZKMasterTech You're Welcome! 👍
Nothing costs like a deer 🦌 😂
Love your videos, wish I could find an automotive tech like you. I hope your bosses realize the caliber of tech you are!
I used to be an auto tech! Thanks.
Zack great video, great insight on what it takes to do a job like this..... love the tips as well!!!!! 🔥🔥👍👍
"This the the worlds longest hose" Thats what she said. :) Great video Zach.
Wow! Combines are such complicated machines. It's a wonder they work at all. So much to go wrong.
Nice video, and good explanations during it, one thing comes to mind during hydraulic line work - how about some rubber gloves to protect your skin from the chemicals in the oil?
this is a trade i wish i had the op to do ,my grand pa was a jhon deere mechanic,worked for them his whole life, if he were still alive i bet he would pull the rest of is hair out on todays deere , i feel for you mate ,but i also know the challenge is what you strive,great video
Excellent work
Thanks for the interesting video! Way to go! Good luck! Have a nice day!
What a job. I had something similar on an injection mold machine. Every hose and cavity had to be cleaned.
"Every size wrench"... lol. Need one.
Great video as always ZK!. Sure hope for the owner that this is a warranty repair.....
Out of warranty…
@@ZKMasterTech oh dear.....
Oh deere
It is a bigger score than most clean outs on discovery channels “gold rush” ! ……. Bad day for a hydro pump
When you have hydraulic lines on blocks like you where messing with a great tool to use is a air hammer just be careful. Bump it and the line will usually spin off easy. A good tool to use is a air hammer bit Chisel point with the edge ground flat to not damage the fitting
That’s what i did…
I think the true size and difficulty of working on these is best shown starting at 33:37
Absolutely
I know the hydraulic filters aren't cheap but always wish they would have more on large machines. At least some post pump or some screens at the motors
I guess there is s good explanation so that is why im interested…when you figure out what might be the issue and if vehicle i s still drivable why dont you pressure wash it before working on it? Dont you get frustrated of having to go through so much dust.
Looks like a Write Off to me !!!
Not worth the risk of something still in there someplace that screws it again !!
Think JD need to up the Bearings Spec/Quality to avoid failures
That is a good and thorough job you are doing there. Slow and methodical is the only way to go with these jobs or it will be back in the shop before you know it. It would be sensible surely on a machine of this value to install an electronic chip detection system similar to those on a helicopter main gearbox, do John Deere do such a thing on any of their machines?
No but that would be one more thing to fail lol
Great one Zeth!
Because the hydrostatic pump failure can spread metal all through the system . You would think a stop valve could be incorporated in the system so that when a failure is detected
the stop valve would stop hydraulic oil from spreading only so far and shutting the engine down before all is broken
Im glad I'm not the only one that uses the "pneumatic any size wrench" on hydraulic fittings 🤣🤣🤣
I work for the city where I live and work on mostly garbage trucks and they are a non stop hydraulic problem lol
Who ever owns this combine is going to have to remortgage the farm for this repair
Great video Big Z. I'm glad I'm not the only one that makes to do lists like that on my projects. I did that when I was building my 68 Plymouth and my old man thought it was hilarious. Kept me on track though. I was wondering how many days do you have on this repair? I understand if it's confidential and you can't say though. Unbelievable the amount of work you have on that combine.
Wow it’s these sort of repairs that make your Chanel so interesting. Would be nice to know the hours you spend on this job( I am guessing at least a week) are you stripping the wheel motors? Would have been interesting to see inside the pump ( you said you were saving it for the core ?????) shame brass is not magnetic ☹️. Anyway interesting and the farmer is lucky you are doing the repair and pleased it isn’t mine 👍
What a huge repair job ! Once again you go all in , this country would stop without people of your skills . Having watched all your videos , I can't help but notice bearing failure as the common denominator in most of your repairs . I'm thinking Deere might be sourcing those components to the lowest price suppliers . Keep up the good work !
Thank you!
@@ZKMasterTech I always worked with SKF bearings, what does Deere use for a standard?
Another great video! That you’re a fan of Milwaukee and VGG doesn’t hurt either lol.
Thanks for the detailed, entertaining video ZK. Keep up the great work! How’d bless.
That's not even my combine but I threw up a little every time you showed those filings. Then all those big chunks fell out....I'll be right back
Paint that combine the new JD Brass flake red. To remember that repair bill. Lol
I’ve got plenty of flake!
The horror font in the title picture is very suiting. 😱
I shoulda been a John Deere tech… never run outta work! 🤦♂️
Changing lines and hydraulic tank? Yikes, I feel bad for that customer. We use foam plugs and blow them through all the lines and hoses to remove contamination, and a filter cart to suck down the tank and remove contaminants.
Those knipex pliers are awesome aren't they?😎
Great Video
i was super expecting a teardown of that pump! :(
Neighbor had a similar failure on an S series this fall.
I can't imagine having to work on these machines without a crane
I am wondering, how could metal contaminants get into other parts of hydraulic system? Any metal that got out of pump and motors case drain would get caught by the return filter anyway and the oil reservoir would remain clean, so oil coming out of reservoir would always be free of any contaminants.
The filler bypass check valve gets metal stuck in it and holds it open then your screwed.