Hello! I found this forum today, and wonder if anyone can look up from the beautiful orange bonnet, and help me figure out something.
I live in S.E. Norway and have a Kubota M7040 from autumn 2010. It has not been used a lot, mainly professional snow-shovelling, and has almost passed 1.000 working hours.
Some months ago I discovered oil spread around near the front and top of the engine, some on both sides. Some points got quite black, it is not evenly distributed around. I have had it twice on a professional workshop, but not yet managed to find the source(s) of the leak.
A year or two ago I had to change an oil-cooler in front of the fan, because it was leaking oil that spread around the engine with the fan. I also had to change the alternator because of this, so it got quite expensive. But this seems to work allright now, this looks like something else.
I think it is hydraulic oil, but am not sure.
What I think I've figured out so far, is that most of the time there's no leak. Leaking appears only if I drive the tractor for quite some time on full/high engine speed. This is usually only during transporting tasks along good roads. The rpm's go up to about 2700. I've tried to reduce to 2500 the last months, and have not seen the leak. But I'm afraid that the leak could get worse after some time, and will therefore try to find out why it is leaking, hopefully before next winter.
Has anyone any idea of some typical Kubota issues like this, oil leaks that only appears after full engine speed for some time?
Until solutions appear, I will keep driving carefully, and wash the engine and alternator if needed.
Regards, Helge
I live in S.E. Norway and have a Kubota M7040 from autumn 2010. It has not been used a lot, mainly professional snow-shovelling, and has almost passed 1.000 working hours.
Some months ago I discovered oil spread around near the front and top of the engine, some on both sides. Some points got quite black, it is not evenly distributed around. I have had it twice on a professional workshop, but not yet managed to find the source(s) of the leak.
A year or two ago I had to change an oil-cooler in front of the fan, because it was leaking oil that spread around the engine with the fan. I also had to change the alternator because of this, so it got quite expensive. But this seems to work allright now, this looks like something else.
I think it is hydraulic oil, but am not sure.
What I think I've figured out so far, is that most of the time there's no leak. Leaking appears only if I drive the tractor for quite some time on full/high engine speed. This is usually only during transporting tasks along good roads. The rpm's go up to about 2700. I've tried to reduce to 2500 the last months, and have not seen the leak. But I'm afraid that the leak could get worse after some time, and will therefore try to find out why it is leaking, hopefully before next winter.
Has anyone any idea of some typical Kubota issues like this, oil leaks that only appears after full engine speed for some time?
Until solutions appear, I will keep driving carefully, and wash the engine and alternator if needed.
Regards, Helge
