Massey Ferguson 1740M Hydro: LOSS OF POWER when hot!

[TopSpeed1]

Yeah, it is disappointing that he didn't post back but I'm guessing if it hadn't fixed it he would have been back on there saying as much, just guessing though!

I'm certainly not advocating that the turbo should be the next item to replace, at the tune of $1,800, but just a consideration.

If I knew that would fix our Massey, it would already be on order though.

I'm sure he had it fixed and (apparently) with the turbo replacement, like you say he would of continued the banter if not.

 

[TopSpeed1]

All common rail injection engines will have a communication port, most are CAN bus and proprietary.
Also most common rail injected engines are designed for a bit more fuel pressure then gravity feed to the high pressure injection pump.
Some turbos will be ECM controlled for boost.
A laptop with the proper software can monitor an engine watching fuel pressure and flow and timing as well as turbo boost.

I think a dyno or 3pt hitch/load on the tractor with a dealer interface hookup to the ECM would be the cats meow.

 

[TopSpeed1]

While we re in a lull here, I had occasion to price a replacement turbo for my 4 cyl Perkins in a MF2660 last Nov. the MF dealer price was $1643 but a rebuild could be had around half that price. Of course the Chinese offerings were wildly scattered from $300 on up. Somewhat academic since the OP machine is still under warrantee. May matter a lot to Yander though?

Yes sir, I know the Turbo's are not cheap.

But here's my thinking. Agco must know of this issue by now, between the 3 different Forum threads that this is directly related to, we know others with this exact same issue. And, if that guys 1735M was fixed by a turbo replacement (well he had injectors replaced as well) wouldn't you think that trial and error (if you cannot dyno and ECM monitor) would be a easy next step.

Like if it doesn't resolve, they just take the new turbo back off and put the old one back on. Process of elimination checked off, go onto plan B (or would this be actually now Plan J or K or even L?)

let's all face the elephant in the room....
My dealer needs a dyno, and the ECM interface w monitoring software! And, AGCO needs to step up and help!
American Equipment in Farmington NY is NOT a small puny dealer!!!!

 

[TopSpeed1]

Turbo replacement Con't...
And if it resolves, dealer sends the defective turbo to Agco, they can inspect & test to see what failed. Truthfully, they probably already know. If you're not going to be modern slash hi-tech (with trouble shooting these power loss situations), then it's the process of elimination method.

 

[DarkBlack]

It was stopped completely w no forward speed, level ground (no HST pedal), full throttle and maybe half RPM range achieved.

Just read this thread.
If the above is accurate, you just described that the engine couldn’t produce enough power to bring rpm’s up sitting still while doing no work, right?
Since you don’t mention any soot/smoke, it certainly would seem like it’s not an injection timing issue, or unseen loading.
Sounds like simply a lack of fuel being injected.
Unforeseen computer intervention aside, mechanically, a seized turbo, or malfunctioning waste gate shouldn’t restrict air so much, as to prevent rpm’s in neutral.
I’m guessing, physical fuel restriction or otherwise faulty fuel injection electrical, like a pressure sensor or the ECU, or a low or high pressure pump

 

[TopSpeed1]

Just read this thread.
If the above is accurate, you just described that the engine couldn’t produce enough power to bring rpm’s up sitting still while doing no work, right?
Since you don’t mention any soot/smoke, it certainly would seem like it’s not an injection timing issue, or unseen loading.
Sounds like simply a lack of fuel being injected.
Unforeseen computer intervention aside, mechanically, a seized turbo, or malfunctioning waste gate shouldn’t restrict air so much, as to prevent rpm’s in neutral.
I’m guessing, physical fuel restriction or otherwise faulty fuel injection electrical, like a pressure sensor or the ECU, or a low or high pressure pump

No smoke from exhaust at anytime. So hopefully injectors are ruled out.

 

[DarkBlack]

No smoke from exhaust at anytime. So hopefully injectors are ruled out.

With your video, and written descriptions, I wouldn’t suspect bad injectors for a second

 

[Yander]

No smoke from exhaust at anytime. So hopefully injectors are ruled out.

Same here, no smoke beyond what is normal. I guess what is puzzling on this problem is the fact that it takes a while for the problem to manifest itself.

Another thing is the power loss when going up even a slight incline is puzzling. In fact, when I was on the road with it, no PTO engaged, it bogged down more going up a slight hill than it did when I was bushhogging on flat ground.

 

[Cbier]

I'm new here and I also have the same problem with a 1735 m hydro. I know these are common rail fuel system which there is a lift pump that pushes fuel through a cooler in front of the radiator to the secondary filter. I put a pressure gauge on the lift pump and I could not get a reading so I'm thinking that there's not a enough fuel pressure going to the injection pump and that may be part of the problem. I am working with a dealer that has a dyno and I'm going to do some more tests and tell them what I have found troubleshooting and take it over then have them hook it to the dyno and their AGCO computer.

 

[hube2]

I didn't know much about turbochargers so I did some reading on the subject.

A turbocharger that is overheating can cause the issue you are seeing. Whether or not it is the cause or why it would take 40 minutes to start showing symptoms I don't know.

You might find this interesting High Temperatures and Turbocharger Wear - Avoid the Heat!