5525...heavy black exhaust turned into big oil leak
- Thread starter bowslam
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Wnc3
Gold Member
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- John Deere 820 utility, John Deere 5525, 997 JD Zmower, Komatsu PC 35 miniExcavator
Sounds like the turbo...
Caution: you can have a run away engine that the key will not turn off if oil starts going in the intake...a scary deal.
Caution: you can have a run away engine that the key will not turn off if oil starts going in the intake...a scary deal.
scrappy isb67
Gold Member
What is the oil level and does it smell like diesel? an injector stuck open will also make it smoke and will fill the crankcase with diesel. and if it was run long with an injector stuck open it will either score the cylinder walls or torch a hole in the piston.
Jerry/MT
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If the dipstick is blowing out and it's blowing oil out the dipstick hole, it sounds like excesive blowby from broken rings, cracked piston, or burned piston crown. The heavy black exhaust sounds like overfueling; maybe a bad injector has caused a burned piston crown.
It's hard to imagine that on a tractor with so few hours but it might be an assembly problem with the engine. Are you still under warranty?
I agree, and I would not even start it until the turbo was ruled out. Having a runaway is some scary stuff, and expensive.
No runaway yet....and I've had is shutdown ever since the big oil leak....unfortunately was holiday weekend so soonest I could talk to Deere service people was this a.m. Don't know how it is in your area but here in eastern PA, one company owns pretty much all the Deere franchises....they have 1-2 decent mechanics but service managers don't know much more than I do....so we won't know anything for sure until one of them can get up to look at it out "sometime this week" I'm told. Re: warranty.....as it always seems to happen, i'm right on the line of expiration so we'll need to see when it actually got registered with Deere. Thanks for all the ideas.
mbarber84
Bronze Member
Like the other guys said:
Could be a turbocharger related issue. The turbo`s bearing is oil-cooled. There should be a line going to the turbo with a fitting on it, should fall right between the two sides of the turbo. If the turbo lost it`s seals or bearing went out, oil could be getting pumped directly in to the compressor side of the turbo charger. When this happens, the engine oil becomes somewhat atomized in the air stream. Oil mixed with charged air will enter the intake side of the engine, and get compressed. If there is sufficient quantities of oil in the air, the engine could "run-away", meaning it will be running on the air/oil/diesel mixture in the combustion chamber. Its hard to stop them once this happens, usually have to clog up the intake side of the turbo with something to "snuff" the combustion process of oxygen. Turbo bearing failures could be the result of a bad build at the factory, or damage to the turbo. If your tractor was hauled any significant distance on a trailer over the road, if it was facing forward, its quite possible that air could have been forced down the exhaust pipe at high velocity, causing your turbocharger to spin in reverse (while at the same time not being lubricated from engine oil because the engine is not running.) This un-lubed operation can build high temp. inside the bearing and eventually or immediately (depending on several factors) cause premature turbo failure. Usually it`s good practice to tape over the exhaust pipe if you are hauling a turbocharged piece of equipment over the road, in a manner that could force air into the exhaust.
Having said all of that, it would seem more likely however, that your main issue is pressure in the crank case. This would cause the dipstick to be pushed out, along with oil. As everyone else said, usually bad / cracked /broken piston rings will allow pressure to bleed beyond the cylinder walls and enter the crankcase. After some run time, pressure would build inside to a high enough degree to cause the dipstick to pop out. Usually, you can see excess pressure being bypassed by either checking the crankcase breather (a.k.a. "slobber tube") or if you take the oil fill cap off during engine operation. If you have "blow by" your engine will "huff" like an old steam locomotive.
bowslam, good luck with the repairs....please keep us posted, I`m curious to see how it turns out. You have a very low hour machine, my bet would be some issue related to manufacturing error or transport error. My dealer brought our new 5075M home on a deck-over trailer, facing FORWARD, with no cover over the exhaust pipe. I didnt say anything, but I`ve got my fingers crossed hoping I do NOT have any premature turbocharger failure. The old addage is true..."an ounce of prevention is worth a pound of cure"
I hope everything works out for you man, hopefully Deere will stand behind it and get your machine back in service! Good luck and keep us in the loop!
Could be a turbocharger related issue. The turbo`s bearing is oil-cooled. There should be a line going to the turbo with a fitting on it, should fall right between the two sides of the turbo. If the turbo lost it`s seals or bearing went out, oil could be getting pumped directly in to the compressor side of the turbo charger. When this happens, the engine oil becomes somewhat atomized in the air stream. Oil mixed with charged air will enter the intake side of the engine, and get compressed. If there is sufficient quantities of oil in the air, the engine could "run-away", meaning it will be running on the air/oil/diesel mixture in the combustion chamber. Its hard to stop them once this happens, usually have to clog up the intake side of the turbo with something to "snuff" the combustion process of oxygen. Turbo bearing failures could be the result of a bad build at the factory, or damage to the turbo. If your tractor was hauled any significant distance on a trailer over the road, if it was facing forward, its quite possible that air could have been forced down the exhaust pipe at high velocity, causing your turbocharger to spin in reverse (while at the same time not being lubricated from engine oil because the engine is not running.) This un-lubed operation can build high temp. inside the bearing and eventually or immediately (depending on several factors) cause premature turbo failure. Usually it`s good practice to tape over the exhaust pipe if you are hauling a turbocharged piece of equipment over the road, in a manner that could force air into the exhaust.
Having said all of that, it would seem more likely however, that your main issue is pressure in the crank case. This would cause the dipstick to be pushed out, along with oil. As everyone else said, usually bad / cracked /broken piston rings will allow pressure to bleed beyond the cylinder walls and enter the crankcase. After some run time, pressure would build inside to a high enough degree to cause the dipstick to pop out. Usually, you can see excess pressure being bypassed by either checking the crankcase breather (a.k.a. "slobber tube") or if you take the oil fill cap off during engine operation. If you have "blow by" your engine will "huff" like an old steam locomotive.
bowslam, good luck with the repairs....please keep us posted, I`m curious to see how it turns out. You have a very low hour machine, my bet would be some issue related to manufacturing error or transport error. My dealer brought our new 5075M home on a deck-over trailer, facing FORWARD, with no cover over the exhaust pipe. I didnt say anything, but I`ve got my fingers crossed hoping I do NOT have any premature turbocharger failure. The old addage is true..."an ounce of prevention is worth a pound of cure"
I hope everything works out for you man, hopefully Deere will stand behind it and get your machine back in service! Good luck and keep us in the loop!
Just an addition to everything that has been said here is I had a turbocharger failure on a large farm tractor this spring. The turbine side of the turbo broke the shaft just outside the bearing block. As would be expected at high speed some real damage was done to the exhaust side housing and a large piece of the turbine ended up in the muffler. Immediately the engine lost power and huge amounts of smoke went out the exhaust. Because it was going out the exhaust side and not the intake side it just made smoke and did not run away. I could find no reason for the failure, just **** happens.
Zebrafive
Super Member
Interesting info about transporting a turbo equipped tractor. :thumbsup:
Good to know if I need to have it trailered anywhere.
When my JD 6415 was delivered it was hauled backwards on the trailer. I did not ask why, I figured it was a weight distribution issue.
They had covered the exhuast opening with heavy plastic, I thought to prevent water entry if they encountered rain.
The driver did tell me the tires were aired to maximum inflation to keep the chains tight and I would have to adjust the air pressure.
Post up what you findout.
Good to know if I need to have it trailered anywhere.
When my JD 6415 was delivered it was hauled backwards on the trailer. I did not ask why, I figured it was a weight distribution issue.
They had covered the exhuast opening with heavy plastic, I thought to prevent water entry if they encountered rain.
The driver did tell me the tires were aired to maximum inflation to keep the chains tight and I would have to adjust the air pressure.
Post up what you findout.
AKfish
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There ya go... The only way the turbo or anything else for that matter - is gonna fill the crankcase with oil and push the dipstick out - is if there's added diesel fuel!
But.... the turbo could have blown an oil line and is pushing oil directly into the cylinders - hence the thick black smoke.
Check oil level. If it's overfilled - you've got injector and/or pump failure.
Choking on excessive fuel from a stuck injector will give you lot's of black smoke - and a filled up crankcase.
Let us know what you find out... Good luck!
AKfish