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Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Diesel
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Diesel This is a forum dedicated to diesel engines and their applicable accessories.


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Old 09-19-2011
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Universal 3m-20 oil level

The rubber stop on the oil level dipstick has come loose. The engine is a M3-20 Universal diesel. Could anyone provide the measurements from the tip (bottom) to the the beginning of the rubber stop. Just to make sure there's no mistake, could you also include the measurement to the top of the rubber stop. I'm not comfortable with draining the oil, replacing the filer and adding 3.2 qts. That just sounds like trouble in the making.
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Old 09-21-2011
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Be safe and buy a new dipstick. The numbers on the dipstick are the Kubota part number. We can supply this as can any other Kubota dealer.
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Old 09-26-2011
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The rubber bushing/seal is to be bottomed/topped out on the dipstick. Simply push it as far up on the dipstick as you can, and push the dipstick into the block as far as you can applying a bit of force, just be sure you fully insert the dipstick and don't just bottom out or jam on the rubber.
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Old 09-26-2011
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Thanks for the replies. I looked into buying a new stick a couple of years ago and found it to be a little steep. Seems to me it was $75.00. I'll take another look. However, given that it should be a minor deal to weld on a stop for the rubber, I can't imagine not repairing the one I have which is otherwise fine. I suspect there are different models since wescarroll implies the rubber seal will top out. In my case it does not. It's somewhere in the middle of the stick. Mu plan was to weld a washer just above the rubber. But I need to know where that rubber goes.
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Old 09-26-2011
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I have attached a photo of the various dipsticks that were used on this particular engine. You can see the where the rubber seal is on each one and none are bottomed /topped out as wescarrol suggests. The advice in his post will provide an incorrect oil level and subsequent engine damage.

These dipsticks range in price from $13.68 to just over $20.

I will now repeat what I said in my earlier post Be safe and buy a new dipstick. The numbers on the dipstick are the Kubota part number. We can supply this as can any other Kubota dealer.
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Universal 3m-20 oil level-kubota-dipsticks.jpg  
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Old 09-26-2011
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Thanks Stanley. I'll price this out again. Might be cheaper to mail order from US. Canadian prices seem a little steep.
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Old 04-04-2012
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Re: Universal 3m-20 oil level

Hi - as mentioned earlier in the thread there are lines and a part number on the dipstick. I don't see any clear indicator of where the FULL mark is, so I'm guessing it is the uppermost mark.
Is that correct?
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Old 04-04-2012
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Re: Universal 3m-20 oil level

Hi Dfok. I ended up buying a new dipstick. I assume your asking about the high-low marks. Your correct that the upper line is high and the lower line is low. Based on memory, I think their about 1 inch apart with roughly 1/2 inch between the low mark and the tip of the stick. I'm not at the boat. It's still under wraps.
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Old 04-04-2012
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Re: Universal 3m-20 oil level

thanks Zen - I've been measuring with the stick fully seated, guess I'll fill it all the way to the line and keep an eye on everything for a while
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Old 01-16-2013
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Re: Universal 3m-20 oil level

Hello,
Tried to send a note to NCboatrx but not qualified yet?? Anyway, from the pic presented above, I would like to find a dipstick like the one shown in the middle. I purchased a replacement dipstick from Universal for my M3-20B and the rubber stopper is way to thin.
The number on that dipstick is "15841" and the number on my current one is "16853".
Was hoping NCboatrx could point me in the right direction.

Thanx
PB

Last edited by pbarealist; 01-16-2013 at 12:32 PM.
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