M5140 blowing oil out exhaust canister/ turbo?

rackmaster

New member

Equipment
M5140
Sep 19, 2021
6
0
1
TN
Family bought new in 2012, ( M5140) has 150 hrs on it now . I ordered all new filters to change all and noticed it was smoking some, figured bad or old fuel. as I got out i noticed oil on loader base.
I shut tractor off immediately and raised hood. Oil is dripping from the canister just above the turbo , the exhaust pipe from this canister goes to the muffler.

since the tractor has not been used very much i assumed it was a seal, but watching some videos, Im not sure now. nothing has been done to the tractor, no damage no anything.
does the crankcase have a vent? where? ( my others have one on side, i didnt see one on this one ) possible a dirt dobber stopped up?
oil level in tractor is right on the money and air filter was not dirty.
oil line out of turbo is not bent or damaged.
Thanks in advance for advise.
 
Last edited:

Captain13

Active member

Equipment
M7040 4WD ROPS, ZD28, Woods (84” box blade, 72” harrow, 48” pallet forks)
Feb 27, 2019
521
170
43
Kathleen, GA
If it’s turbocharged, the turbo may have blown a seal. If so, it will go directly into the exhaust.
 
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Dave_eng

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Lifetime Member

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M7040, Nuffield 465
Oct 6, 2012
5,255
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Williamstown Ontario Canada
A 2012 tractor with 150 hrs may never have been worked and is now suffering from diesel slobber to use a crude term.

Wet stacking is another term used.

Engine slobbering usually results when an engine is run for long periods of time at light loads. .

Over the years when this matter comes up on the forum, often the owner reports the problem much improved after loaning his tractor to a friend for plowing.

Diesel engines need high cylinder pressures to seat the piston rings.

Talk to your dealer about this. Some have dynamometers and can run your tractor engine under heavy loads to seat the rings. The dyno's are used to measure the torque of an engine to assess its performance.

Do not blindly accept my diagnosis and ignore other serious issues.

Dave
 
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rackmaster

New member

Equipment
M5140
Sep 19, 2021
6
0
1
TN
A 2012 tractor with 150 hrs may never have been worked and is now suffering from diesel slobber to use a crude term.

Wet stacking is another term used.

Engine slobbering usually results when an engine is run for long periods of time at light loads. .

Over the years when this matter comes up on the forum, often the owner reports the problem much improved after loaning his tractor to a friend for plowing.

Diesel engines need high cylinder pressures to seat the piston rings.

Talk to your dealer about this. Some have dynamometers and can run your tractor engine under heavy loads to seat the rings. The dyno's are used to measure the torque of an engine to assess its performance.

Do not blindly accept my diagnosis and ignore other serious issues.

Dave
I have read about that, but never had one do this. I personally have never used this tractor any, just brought it in to service every thing, its been used for the last 10 years to bushhog his place, Im sure its never been worked hard, but running a 8 ft pickup cutter behind it, as he did, would lug it some.

I would like to know where the crankcase is vented just to make sure its not blocked, I looked under it and have not found one.
it will do it right after start up.
 

Captain13

Active member

Equipment
M7040 4WD ROPS, ZD28, Woods (84” box blade, 72” harrow, 48” pallet forks)
Feb 27, 2019
521
170
43
Kathleen, GA
If it hasn’t been worked hard, it probably needs it. Not just high rpms, but hook up to a harrow or something that will actually cause put the engine under hard load. Don’t lug it, but make it pull hard. Mowing might not do the job unless it’s heavy mowing.
 
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Russell King

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Lifetime Member

Equipment
L185F, Modern Ag Competitor 4’ shredder, Rhino tiller, rear dirt scoop
Jun 17, 2012
7,354
2,734
113
Austin, Texas
Since no one has tried to answer the “where’s the vent?” question posed.

I believe the crank case is vented back to the engine air intake and burns off the vented blow by. If you see any (properly sized) tubes into the air in stream you can verify that by removing the tube.
 

rackmaster

New member

Equipment
M5140
Sep 19, 2021
6
0
1
TN
Since no one has tried to answer the “where’s the vent?” question posed.

I believe the crank case is vented back to the engine air intake and burns off the vented blow by. If you see any (properly sized) tubes into the air in stream you can verify that by removing the tube.
thanks, I read that last night, so dirt dobbers should not be able to stop this up. most of my other tractors have a line that vents under the tractor. i didnt see one on this tractor. and read that pressure could cause it, . Ill be out of pocket a week before i can check the turbo and see if it has play or oil in it, if all thats good i see a good work out in its future.
 

rackmaster

New member

Equipment
M5140
Sep 19, 2021
6
0
1
TN
Since no one has tried to answer the “where’s the vent?” question posed.

I believe the crank case is vented back to the engine air intake and burns off the vented blow by. If you see any (properly sized) tubes into the air in stream you can verify that by removing the tube.
Thanks again Russell, I had to wait for a few days before I worked on it. so, I changed the oil and fuel filter and planned to " work " the tractor. I've gotten advise from here and a couple of good mechanics and they suggested, change the oil and work it hard.
so , I changed the oil last night, started it today and checked level and felt a strong air flow coming out of hole. it would have blowed a balloon up. I suspect this is the issue, i will try to attach video. it was actually spitting oil out the oil stick hole.
I also called the service shop in savannah TN and they were extremely helpful. when I buy stuff, it will be from them. he sent me a diagram by email , appears it does not have a replaceable filter, but it does have a couple of screens. ( I called to see if there was a replaceable filter in this system , like my JD has.
Ill update again when I get the time to remove this and hopefully this will correct the issue. again, I thank the Savannah TN Kubota dealer for being helpful, I stopped by another one couple of weeks ago while on a dr visit, and I left feeling like I pissed them off just by asking. It was my first visit, and my last to that dealer.
i cant load vid for some reason, but here is dia of the screens in the crankcase return system as russell mentioned.
 

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rackmaster

New member

Equipment
M5140
Sep 19, 2021
6
0
1
TN
Thanks again Russell, I had to wait for a few days before I worked on it. so, I changed the oil and fuel filter and planned to " work " the tractor. I've gotten advise from here and a couple of good mechanics and they suggested, change the oil and work it hard.
so , I changed the oil last night, started it today and checked level and felt a strong air flow coming out of hole. it would have blowed a balloon up. I suspect this is the issue, i will try to attach video. it was actually spitting oil out the oil stick hole.
I also called the service shop in savannah TN and they were extremely helpful. when I buy stuff, it will be from them. he sent me a diagram by email , appears it does not have a replaceable filter, but it does have a couple of screens. ( I called to see if there was a replaceable filter in this system , like my JD has.
Ill update again when I get the time to remove this and hopefully this will correct the issue. again, I thank the Savannah TN Kubota dealer for being helpful, I stopped by another one couple of weeks ago while on a dr visit, and I left feeling like I pissed them off just by asking. It was my first visit, and my last to that dealer.
i cant load vid for some reason, but here is dia of the screens in the crankcase return system as russell mentioned.



Well, that didnt fix it, I took the part off in the diagram and the screens inside were clean.
I left the tube off that feeds the vapors back into the intake system before the turbo and instead of this tube sucking air, it was actually blowing air back,
I not sure if thats normal.

the crank case still has a lot of pressure , i can take the dip stick out and it will actually blow oil out the hole.

I was hoping those screens were dirty and this would fix the problem.

any other ideas?