L2850 LEAK

[teach515]

We have a Kubota L2850 2 wheel drive tractor. I started it up today and it was blowing oil out the dipstick tube. It looks like there is hyd fluid in the oil. I can't figure out where it's coming from. Any ideas would be greatly appreciated.

 

[jimainiac]

I hope it's not water that has mixed with the oil. We had an L245DT that sat outside all the time, and at one point the oil was real milky and too full. Rain had gotten into the motor somehow, and it got all mixed when I started it up. It took several oil changes to get rid of it, and then I started covering the motor area with a tarp.
If it really is hydraulic oil, I think there might be some way it can get from the hydraulic pump, where it is driven by the motor. (Or did I just dream that?)

 

[teach515]

Thanks Jim,

Oil isn't milky, thought once it was diesel, but it doesn't smell like diesel. It stays in barn and radiator isn't low, so I don't think it's water.

 

[B2400]

Oil seal between hydraulic pump and fuel pump is leaking. This allows hydraulic fluid to be pushed into the engine oil supply and increaseing it at same rate udt is depleted!

 

[teach515]

Thanks B2400!

Is this a major undertaking to repair or something an average guy can do? Thanks again for the assist!

 

[B2400]

To be honest I'm not sure. I've never attempted it, but I don't think that it's very difficult. The hydraulic pump will have to be removed from back of injection pump and seal should be located on shaft btween the two. The L2850 is one stout tractor. We've got a 1984 model at work with over 20,000hrs and never had motor apart!
BTW.. Welcome to TBN and take some time to fill out your Bio, sometimes a member from your area can help out!

 

[Yankee Clipper]

teach,

B2400 is right with the seal leak diagnosis - you can change it out without much trouble.

Remove the hydraulic pump at the flange and change the seal. Not hard to do but it will save you a bit of $$..

Good luck!

 

[dfkrug]

Teach, your tractor has a crankcase vent tube that points downward
at the ground....this is where your vapor (and overflow oil) should be
coming out. Not the dipstick tube. Check to see if it is clogged.

My first tractor was the 3cyl version of yours, the L2550. Great tractor,
super easy to start down to 40F, without glow plugs.

 

[teach515]

Thanks!

I appreciate all of the assistance with my tractor leak! Great site and great members!