Hello, I'm a newbie to the forum and a newbie tractor owner. Bought the tractor less than a year ago and it has about 3500 hours. I use it for snow throwing and noticed a heavy oil drip from the breather hose coming out of the valve cover. Oddly enough, seems like the oil level is too high, but I'm not sure why. I changed the oil last summer with the correct quantity (4.1 quarts) and the oil on the dipstick is not as black as it typically is? Any help is appreciated. Thanks.
oil from breather - B7100HST
- Thread starter KevinD
- Start date
Was the oil at the correct level after the oil change and has risen since then? if so is it a slightly grey to milky colour,if so ,has the water level in the radiator gone down which would suggest a leak between the two..head gasket or cracked block maybe ?..
dave
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Oil was at correct level. Oil coming out has no sign of water/coolant contamination. Strange. Seems to push more out when vehicle is under load.
Hi Kevin. Check your Hydraulic oil level. I had a bad seal between the hydraulic pump and the engine.Hydraulic was seeping into engine oil. Just an Idea. May be some thing else. Good luck and keep us posted.
Dusty
DustyWhen the rings in an engine are worn they allow compression gases to pass them by and they end up in the sump.The vapour which contains some oil will condenses in the breather and drips out. Stick your finger to block the beather pipe for 10-15 seconds and then take your finger off ,I suspect there may be a whoosh of gas showing your rings are worn.
Edit: when the engine is under load the oil is hotter and thinner so gets passed the rings and turned to vapour faster. The oil level usually falls though!
dave
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You said the oil was clearer than it was. Hydraulic oil or diesel fuel, if it is deisel you can smell it. With 3500 hrs it probably has some blow by as well. If it is diesel in the oil I would not run the tractor. If it is hyd oil you can run it to load on a trailer or to move it, but I would not go blowing snow with it. If the oil level is rising it can only come from three sources rad, fuel or hyd. Keep us posted. Dusty
DustyThanks for the info guys. I will take a look at her and let you know. I'm praying its not worn out rings. The only that is strange is the problem just appeared out of nowhere. I would think if it were worn rings it would have occurred over time. I'm leaning/hoping its the hydraulic leaking into the crankcase. I did not smell diesel fuel and it's definitly not coolant so the excess fluid needs to be coming from somewhere. Dusty T, how big was the job to repair the leak from the hydraulic pump? Thanks
First I just tried to replace the seal but it did not hold.it turned out that the pump was just worn out.It wasn't a big job to change the pump. But it cost around $600.00. Never had a problem after, and with 3500 hrs on yours I would skip the trial and error and just do the pump. If your tractor runs good and has good power and does not go through much oil then I would'nt worry about it. Dusty Wow I should reread my own posts before I post them. When I said don't worry about it I meant the blow by.
Dusty Wow I should reread my own posts before I post them. When I said don't worry about it I meant the blow by.
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I'm trying to track down the number for the hydraulic pump and/or the seal. Would this be the entire HST assembly? I have a part list but can't seem to locate the area of the affected part(s). Thanks
For me it was large quantities of oil spilling out the overflow line. Oil level was always overfull every time I checked. First clue, the oil had a slight bluish tinge, then become markedly blue. Second clue, the FEL got really sluggish. Third clue, I had to add a gallon of (blue) trans/hydraulic fluid.
It cost about $1200, as the seals, pump and some of the FEL lines had to be replaced. Whoever installed the aftermarket FEL should be taken out and shot. The pump runs on a keyway from the fuel injector pump, so there is a direct path to the crankcase. Also, it took 3 weeks to get a genuine Kubota hydraulic pump. Fortunately, all this happen last year just after the end of snow season.
Stuart
It cost about $1200, as the seals, pump and some of the FEL lines had to be replaced. Whoever installed the aftermarket FEL should be taken out and shot. The pump runs on a keyway from the fuel injector pump, so there is a direct path to the crankcase. Also, it took 3 weeks to get a genuine Kubota hydraulic pump. Fortunately, all this happen last year just after the end of snow season.
Stuart