Oil pressure problem YM2210D

[Pird]

I have a YM2210D oil pressure problem. The oil pressure lite comes on AFTER the tractor warms up and the RPM is below 1500 psi. (outside temp is above 50.)
Above 1500-1600 rpm the lite stays off. I have had the tractor about a week and the man who serviced the tractor before delivery said he serviced it with 15 W 40. The oil level is normal. Along with troubleshooting suggestions, please comment on where I could best procure a pressure gauge (to test real pressure and maybe mount later) and a sensor, should that be the problem. Thanks
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[YanmarFever]

First I would replace the oil sensor switch (pressure) switch and see what happens. They are cheap to buy.
Ernie
www.ernies.net

 

[LMTC]

In my experience the sending unit works or does not work. The rpm related issue would tend to make me think oil pump, but I am NOT a mechanic....I pay people who are.

If I'm not mistaken, this was one of the "reconditioned" units, wasn't it? As I recall the original thread emphasized caution about recons (I know I said the midwest rebuilder line sounded bogus) and about the servicing dealer. Did you get any customer references per our suggestions? I am just curious. I certainly hope you can get this fixed, but with an almost immediate problem that apparently your seller is not going to stand behind I am wondering if you took any of the advice you asked for.

Original thread
http://www.tractorbynet.com/forums/showflat.php?Cat=0&Board=yanmar&Number=563208

 

[thegreatrandini]

Congrats on being a 2210 owner! This seems like something your dealer should have noticed and fixed prior to offering for sale. I think u are on the right track. Start with the connections, sender, check pressure and then look at the oil pump. I'd have to be there to be more help. Let your dealer know you have a problem he should help. lol

 

[Pird]

Thanks for the prompt replies.
The tractor was refurbished by a reputable firm. I checked its Internet site and confirmed with the owner on the phone.
I am also not a mechanic but don't want to pay one to fix a simple problem if that is what I have. I was under the impression that common parts like sensors and pressure gauges were commonly interchanged with parts available at many retail parts outlets. I was hoping someone could respond as to where/if I might get these parts, if in your opinion that is where I need to start, and be as specific as possible considering the information I have presented or query me for more info.
I really do appreciate the information but don't need the chastisement.

 

[normde2001]

Sounds like the oil pressure sender to me. I have never had a problem on my Yanmar, but low/no oil pressure on several cars has always been a bad sending unit, available from any Yanmar parts dealer.

 

[bruce1966us]

The sending unit is too cheap to overlook. Definitely try one before proceeding.

Bruce

 

[California]

</font><font color="blue" class="small">( The tractor was refurbished by a reputable firm. ... as specific as possible...)</font>

Order an oil pressure sender unit from the rebuilder as the first step. Pay by M/C if you have to. Tell him you want it shipped today.

If this request indicates he doesn't really stock parts then go to AutoZone, Kragen, NAPA etc and get a small pressure gauge and universal adapter kit. Mount it in place of the present sender. This is extremely simple. The entire project should cost under $25 and will give you the info you need, to decide to keep or return the reconditioned tractor.

I prefer a mechanical gauge with a 180 degree dial since most electronic gauges have a crowded scale and a few are really an on/off sender rather than proportional to pressure. This doesn't have to be a permanently mounted install, just a one time diagnostic tool so you know what to do next.

 

[mark777]

Pird,

I agree with LMTC on the pressure sender. They work or they are inoperative. Yours seems to be working, so that leaves a few possibilities:

Incorrect Oil, or viscosity of oil is too lite.
Oil saturation from fuel contamination.
Week oil pump...not very likely on Yanmar engines.
Excessive bearing ware.

A simple test is to see if you can ignite oil (away from any combustibles) with a match or cigarette lighter. If oil ignites rather quickly it is fuel contaminated. If it is very difficult or impossible to ignite than you have eliminated that whole problem.

As good as your dealer is, I think I would be asking him questions and make him aware of your problem no matter how insignificant (or catastrophic) so he is prepaired to help diagnose and repair.

Good luck, Mark

 

[bruce1966us]

I have replaced hundreds of bad sending units that have acted the same way. Spend the $7 and see what happens.

Bruce