Kubota L2250 no oil pressure
- Thread starter kdsn
- Start date
Ok everyone...fyi....figuring a clogged screen on pickup so soak Kubota overnite with solvent. Removed oil filter, attached hose to threaded shaft for oil filter, could blow air into oil pan, could suck solvent up thru thread shaft for oil filter, drained solvent, poured solvent thru hose and out of oil pan figuring all is well. Filled with 6 qts. of oil, new filter, new sending unit. Started up, light still on, no oil in filter. Reattach hose to oil filter shaft and sucked oil from pan thru hose into mouth...yum...yum. Re attached everything and still no oil in filter and idiot light on so it's safe to say a bad pump and/or gear??? Your thoughts please. Maybe I'm missing something??
Thanks, Kevin
Thanks, Kevin
Been a long time. Alas...replaced the oil pump and still no oil pumping. Onto the oil pan...
Before you pull the pan, overfill the pan by3 inches. If the suction screeen/tube has fallen off, it should then have oil pressure. Just don't run it long, that much oil will be in the crankshaft rotateing part and produce a lot of spray. Do you have the front back together??
Wait a minute. You said you sucked the solvent out of the crankscase thru the hole the filter gets its oil from. If that is the case, the screen and pickup tube is still on. But, I don't see how you were able to do that. The pickup tube goes to the suction side of the oil pump, the pump has to turn to press the oil out of the other side into the filter. You would have to suck the solvent thru the pump and I don't think that is possible.???? If I get time tomorrow, I'll try that on mine and see if I can.
Back together with new pump and no oil coming out with filter removed. Onto pan removal Monday.
Solvent yes was sucked up. I'm thinking I put in way more than 5 qts as you suggested earlier and didn't realize it till now. Live and learn.
Didn't get time to ck that today. Storm came thru, trees down. May be awhile, but I want to know. I have an L235dt with low pressure at idle that I still haven't figured out. Do you have the front of the eng back on?? Wish I had thought to ask you to look for visible oil galley holes with cup plugs in them . I think I have one blown out.
Pan removed. NO sludge build up, NO pickup tube loose. Prior to pan removal a new pump was installed and still NO oil coming to filter or oil sensor. Anyone have any ideas? Time for a hand grenade ? LOL
I don't know the arrangement of the oil pump, but is it turning when the engine turns? Is there a shaft that may have sheared on the oil pump drive?
Just a thought.
Mark
The treaded stem the filter screws onto doesn't lead to the pump and sump. It leads to the main oil gallery! If you force oil in there it will go through the main channel and leak from all the bearings in the engine, eventually finding it's way back to the sump.
esrve, that doesn't make sense. If the pump is pushing oil into the main oil galley which feeds the filter and the main bearings at the same time, oil going to the bearings will not pass thru the filter???? Does the oil that goes thru the filter dump back into the pan??