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Topic: Bonehead question
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Rick in Cincy

09-03-2003 09:30:13

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I'm a beginner mechanic and I did a stupid thing. I'm in the process of changing the engine and hydraulic oil and filters. I originally mistook the front hydraulic drain plug for the engine oil plug. So I drained a bunch of hydraulic fluid, changed the engine oil filter, then added eight quarts of engine oil. Since I had unknowingly failed to drain the original engine oil, I then had twice as much oil in the tractor as it is supposed to have! (stupid, stupid, stupid) Fortunately, I noticed my mistake before starting the tractor and drained out all this oil. Did that harm anything? Is there anything else I need to do before refilling the oil?

I also have a related question. My tractor is a Kubota M5700 w/ 4WD, and the manual indicates two drain plugs for the hydraulic fluid. There is a third plug that sits about one foot further towards the back of the tractor, and I can't find any description for this plug in the manual. It is a little smaller than the other two hydraulic oil plugs (19mm instead of 25mm), and it looks like it is on the same hydraulic oil pan. Is this actually a third hydraulic oil plug, or is it something else?

I'm not asking out of idle curiosity. As part of my stupid drain plug misidentification, I also removed this plug. It appeared to just drain out a little more hydraulic fluid, but I'm obviously no expert on the subject.

I'd appreciate any feedback.


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Rick in Cincy

09-05-2003 08:00:08

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Re: Bonehead question in reply to Rick in Cincy, 09-03-2003 09:30:13  
I appreciate the feedback. I didn't notice any issues after I refilled the oil and started it up.

I have a call into the Kubota dealer to find out about the mysterious third drain plug, and I ordered a shop manual and parts manual for the tractor.

I'm definitely trying to learn about this stuff, and I guess my lesson learned from this experience is to reread the pertinent section of the owners manual, even if I think I remember how to do something, because sometimes I don't. ;-)

Thanks again,

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jw 57

09-05-2003 05:02:51

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Re: Bonehead question in reply to Rick in Cincy, 09-03-2003 09:30:13  
First let me tell you that imho there is no such thing a s a stupid question as long as you are trying to learn. You didn't hurt anything by overfilling the oil since you didn't start the engine (except your wallet).Just drain everything out and refill correctly.I don't know anything about locations of Kubota drains but as many as are out there you should hear from someone on this forum.

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09-03-2003 19:23:04

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Re: Bonehead question in reply to Rick in Cincy, 09-03-2003 09:30:13  
I don't know Kubota tractors so I'm not sure this can help. Could the plug in the back be for your finale drive oil or are they the same on that machine? You might want to check that out. Good Luck.

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09-03-2003 17:59:09

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Re: Bonehead question in reply to Rick in Cincy, 09-03-2003 09:30:13  
I'm no expert,but i don't think you would have hurt the engine,long as you drained the oil out and started over again.I would let it set a while to make sure your oil level don't raise on the dipstick.even if you had run the tractor It would probly just smoke like crazy.maybe blow a gasket nothing to major.the hydraulics I don't know...

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