Re: Deutz Tractor

[Janicholson]

Not Pumpman, but you need a very different second opinion. If it were a blown engine it would have symptoms beyond fuel in the
crank case. A dead miss, and major noise might be a clue to a damaged engine, but second opinions are in order. Jim

 

[JDB]

Did they check the front seal on the pump?
Friends tractor was putting diesel into the
crankcase turned out to be the front seal
on the injector pump. Case 1070 btw

 

[Bruce from Can.]

My IH 966 started dumping diesel into the crankcase.
Took the injector pump off and sent it away, new O
rings/seals or whatever they did solved the problem.

 

[Down under farmer]

Not sure but we run 6207 7207 and 3 dx
series tractors. Have you looked into the
lift pump. We had similar symptoms ant it
was the lift pump leaking back into the
sump

 

[Farmer Rock]

I would put money on the lift pump. Very
common for a mechanical lift pump
diaphragm to fail and start pumping diesel
into the crankcase.
Get yourself a different mechanic if you
can't do this yourself, and you might have
a chance. I don't know when diesel in the
crankcase started being a sign of a blown
engine. The only way it would kill your
engine is if you kept running it on
diluted oil it would eventually kill the
bearings.



Rock

 

[Case30Deutz06]

I assume you mean 40 06. We may be easily able to eliminate that fuel is getting into the crankcase from the injection pump. In the picture is the injection pump on my 68 06. It should be just like the one on your 40 06, but 4 cylinder instead of 3. The thing you want to make sure you have is what I call the overflow tube. That may not be the correct name but I am not an injection pump expert. Yours should have that. If yours has that, the fuel is not getting into the crankcase through the injection pump. If there was a leak from the lift pump or any of the seals at the front of the pump (which others have suggested and is very common), it would just drain out that tube and not into the crankcase.

The O6's with Bosch inline pumps used self-contained oil for lubrication, and if there was a fuel leak or if it was overfilled during oil change it would just come out the tube. By manual you were supposed to change this oil in the pump every 3,000 hours. My dealer says every engine oil change it just because there is nothing to doing it and while you have new oil out.

I believe with the 07's and especially those newer (dx's) they switched to supplying oil from the engine crankcase to the injection pump. While this eliminated the need to change the oil in the injection pump, it did allow any fuel leaks either from seals in the pump or the lift pump to enter into the crankcase. Advantages and disadvantages.

It is possible that your 40 06 was upgraded to the newer injection pump that gets oil from the engine crankcase, so that is why first look for that overflow tube.

If your injection pump has the overflow tube, then have to look for other culprits. Bad injector? Does engine run good; is injection timed correctly?