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

[TopSpeed1]

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.

Thanks for chiming in with this same problem on your 1735M HST.

Super glad your dealer has a dyno, and with an interface connection to their Agco diagnostic software; it should be a done deal for troubleshooting once the power loss occurs on the dyno.

If and when it gets fixed or resolved, please ping-it back in here. The other gentleman who got this fixed never replied back (on the other Forum) and was probably just happy and on his merry way. Understandable, but it doesn't help others like you or myself or any future readers who will have this issue.

 

[TopSpeed1]

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!

I read that article, TY. Even though that was more "Industrial" equipment and mostly related to heat, our small turbos could have been harmed in a way that they do not operate correctly anymore under "hot" exhaust load temps. I use to be involved in No-Prep drag racing and hot turbos were never a good thing.

It only keeps the "turbo" as a possible cause and that much more. At this point, I wouldn't be surprised if this was the turbo, fuel pump, lift OR still even the injectors (but as said^^^, you'd think you'd have smoke on an in-efficient combustion/burn).

-> Seeing that this is having more and more owners come forward with this exact same issue, (for me) this is eliminating the personal stuff like clogged fuel line or congested fuel tank theories.

I truly believe the smoking gun is going to be hardware related.

 

[Bavarian]

A turbo can only created boost if there is enough fuel injected.
ECMs in Common Rail Systems monitor both.

Now is the question what's been there first, the hen or the egg.

 

[DarkBlack]

A turbo can only created boost if there is enough fuel injected.
ECMs in Common Rail Systems monitor both.

Now is the question what's been there first, the hen or the egg.

Technically, the ECM and sensors have to be first, then the fuel, then the resulting heat and air movement to drive the turbo.

 

[Yander]

Have those of you experiencing this issue noticed a distinct link between using the hydraulics to go up an incline either while bush hogging or not.

Our Massey is guttles going up an incline of any grade, my little Yanmar is not, both hydrostatic. Usually bushhog in 2nd range on Massey.

My case Shuttle Shift is a beast in every aspect incline or not.

 

[TopSpeed1]

Have those of you experiencing this issue noticed a distinct link between using the hydraulics to go up an incline either while bush hogging or not.

Our Massey is guttles going up an incline of any grade, my little Yanmar is not, both hydrostatic. Usually bushhog in 2nd range on Massey.

My case Shuttle Shift is a beast in every aspect incline or not.

Okay, I'll put mine out there (if it hasn't been clear enough).....

-> When I turn the (steering) wheel sharp, the RPM's decrease.
-> Going up a slight incline you get the drop, actual hills you can get down to creeping speeds at best.
-> Taller grass mowing, the same. Beginning of the mowing it will eat up anything in it's path.
-> Back-ho work, at first, plenty of bucket power to cup/curl and lift stumps out, but when warmed up, no guts, it's worthless.

For me, very hot days of 90F+ brings this loss of power on a little sooner than a colder like 50F day. A/C on quickens the power loss as well. The power loss is coming no matter what, I just think it's weird that additional heat build up kicks it in a tad sooner.

 

[LouNY]

Okay, I'll put mine out there (if it hasn't been clear enough).....

-> When I turn the (steering) wheel sharp, the RPM's decrease.
-> Going up a slight incline you get the drop, actual hills you can get down to creeping speeds at best.
-> Taller grass mowing, the same. Beginning of the mowing it will eat up anything in it's path.
-> Back-ho work, at first, plenty of bucket power to cup/curl and lift stumps out, but when warmed up, no guts, it's worthless.

For me, very hot days of 90F+ brings this loss of power on a little sooner than a colder like 50F day. A/C on quickens the power loss as well. The power loss is coming no matter what, I just think it's weird that additional heat build up kicks it in a tad sooner.

Until that tractor is put on a PTO dyno with AGCO software on a computer to monitor all the engine parameters it's going to be a guessing and parts changing game. With no satisfaction for anyone involved.

 

[567Chief]

I’ve just spent the last year taking my tractor back and forth to the shop for the exact issue you’ve described. I have a 1740M hydro with 450 hours on it. I primarily use it for a 72” woods finishing mower weekly and some grapple work.
I ended up getting really upset with the lack of service from the dealer I purchased the tractor from and called MF customer service. They were very responsive and had me take my tractor 90 miles from home to an amazing technician. Long story short, they found that the injectors were bad and replaced them. As I understand the new injectors have been re designed. FYI they are around $1200 each, if you’re out of warranty. The technician had to verify pressures at the injectors to confirm they were bad.
The technician explained that that tractor has so much bleeding off HP, from the Hydro to the A/C, there’s not much left at the PTO, around 25 HP. The slightest fuel issue will cause the symptoms I had. It seems to run like it did when I bought it. I am considering trading it in the next couple of months. I love the tractor but I’ve lost confidence in its longevity.

 

[TopSpeed1]

@567Chief Totally feel you on your lack of confidence. Maybe it will come back "IF" the replacement of Injectors was the issue. Trusted time in the seat may build this up.

On my last tractor (prior to this 1740M), I had a Case International and in 16 years of ownership from brand new, it saw the dealers shop only once, and that was for a radiator replacement. This MF however has been a different story, so I can TOTALLY relate to you and your confidence in your Massey 1740M. As yourself, I love the tractor when it's running correctly, but 35-40mins of this is really just a tease at best.

 

[JWR]

$1200 each for fuels injectors?