Does my M7040 have a EGR engine? Pictures to help!

[bilrus61]

Got my M7040 from Barlows in the fall of 2012. I thought it had none of the eviromental stuff on the engine. I've since found out that some of the late M7040 models might have had a EGR engine installed in them. Anyone out there can tell me if this engine in the pictures has a EGR valve or is that round thing the turbocharger?

 

[Gary Fowler]

I don't see a turbo in any of the photos. It would be mounted to the exhaust on the hot side and air intake past the filter on the cold side. Not sure what round thing you are referring to. Likely as not, you don't have any EGR emissions equipment on a 2012 engine.

 

[mkreitler]

Hi Gary, The one picture with the fuel filter showing in it rite in front of it notice a guard that says hot on it if you look to the rear of it there is a tube shaped object that is connected to a external EGR VALVE.You have the same engine as I do in my M7040 witch has the EXTERNAL EGR VALVE. The turbo is on the exhaust side of the engine off the EXHAUST MANIFOLD because a TURBO is driven by EXHAUST GASES. So yes you have a EGR EMISSIONS ENGINE witch is not all that bad the newer TIER IV engines have EGR PLUS A PARTICLE FILTER. Are as DIESEL PEOPLE CALL it a DPF.Not to worry just use a MOTOR OIL RATED API CJ-4.

 

[Tx Jim]

If your tractor a M7040HDNBC? if so it has a EGR valve. Round white filter looking thingy is a check valve.

 

[Imaybail]

The downside of EGR is the additional soot load that is added to your oil. That's why CJ 4 oils are specified. They contain additives that are supposed to be better at holding the soot in suspension between oil changes. Other properties of CJ oil are related to removal of anti-wear agents such as sulfur and zinc in an effort to reduce emissions. If you can find API CI rated oil, it will offer a better additive package with no negative effects on the EGR system.
Also, if the EGR system is cooled by the cooling system of the engine, the possibility of a cracked heat exchanger can lead to cooling fluid being introduced into the cylinders, with obvious negative results.

If your EGR system were to become inoperable through a defect or loose wire or blocked hoses, your engine would probably be better off in the long run.

 

[MHarryE]

I believe your tractor has an EGR valve as it is an interim Tier 4 engine. Tier 4 final engines have the DPF in addition to cooled EGR. If you disable the EGR the combustion chamber temperature will be higher at full power. The WSM does not list any problems associated with this although higher temperatures in the combustion chamber and exhaust could mean heat related issues unless the engine is designed to run without the cooled EGR. You have to ask yourself if disabling the system in hope that you get more power at the expense of potentially damaging your engine is worth it. It may not carry any risk - I do not, however, remember anyone on here talking about blocking their system but many said they will do it if they ever buy a tractor so equipped.

 

[MHarryE]

I did a quick search on defeating the cooled EGR and as I suspected reported failures are blown head gaskets and burned valves. That follows since the combustion temperature under load will be much higher than that for which the engine is designed.

 

[Recoveryhill]

I did a quick search on defeating the cooled EGR and as I suspected reported failures are blown head gaskets and burned valves. That follows since the combustion temperature under load will be much higher than that for which the engine is designed.

Add to that damage to your neighbor's lungs. China is in meltdown these days due to absence of pollution controls. Look at Los Angeles in the 1960's for a homegrown example. I wouldn't dump my garbage on your land and appreciate being able not to dump combustion pollutants on your family.

 

[bilrus61]

I was basically wanting to concerning oil changes and synthetic extended oil changes. Since it is a EGR I'll leave it alone and use dino oil and change per manual. I wasn't really thinking about disableing it IF it had it and it does. Thanks for all that responded to my question.

 

[wmonroe]

MHarryE - did you find threads here on TBN with damage related to removing the egr? Just curious as I would like to read them.