Kubota tractor owner: What is the simplest way to clean out the crank case? Manual says rinse with kerosene and somehow wipe it down. I'd like to pull the pan and rinse from the top. Also r&r the oil pump. Pull the engine or pull the front axle? Did an oil change and new oil is filthy after a short run and oil pressure light is on. Should also mention B6000 4x4.
Intelligent Tinkering: If the oil pressure light wasn't on before the oil change and is on now, you probably should make sure it is actually working. It should go off at higher rpm. If it doesn't, I'd suspect the pressure switch. You can take it off and check with a VOM set to the continuity setting, using air pressure (turn the compressor output down to less than 30PSI), or check it by replacing it. If that doesn't help, there are two causes of low oil pressure: bad pump or bad bearings. Bearing wear is far more common than pump wear because the design of the pump is robust. When bearings wear, their ability to hold pressure drops. But typically the light will still go out at higher rpm. It's unlikely the sludge has accumulated in the oil passages. I've stripped down a lot of engines and any sludge is usually just in the sump.
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