Generator starts, runs, and produces power fine. Only has 170 hrs on it. After about 4 hours of use it will shut down showing the low oil pressure fault. Oil pressure gauge shows pressures ranging from 47-52 psi when the generator is warm. Any suggestions on what this issue might be. Is the sender going bad?
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MEP-805B low oil pressure issue
- Thread starter ryanb72
- Start date
- 17,091
- 25,070
- 113
- Location
- Burgkunstadt, Germany
That could be. It would be nice if you were there to see, when it shuts off, what the pressure really is. The Gauge is to be taken with a grain of salt. Have you put a manual oil pressure gauge on it?
- 1,145
- 1,300
- 113
- Location
- Basehor, KS
Yes, otherwise Genset won’t even start
Also check oil pressure transducer opening for dirt accumulation since you gotta take it out anyway
Do you guys have a part number or picture of the “T” I need.
- 17,091
- 25,070
- 113
- Location
- Burgkunstadt, Germany
Hold on a second. There should be a place on the right hand side where the AOAP, (Army Oil Analyses Program) Has a valve to take oil samples. Take a look. Some gen sets have it and some do not. It its on there, simply rigg the meter to it. In any case, there should be a port, with a plug in it that you can use.
- 17,091
- 25,070
- 113
- Location
- Burgkunstadt, Germany
Look to the left of the two red MPU connectors. See a data plate hanging by a wire tie? Thats a AOAP valve. No, this is not a MEP-805. But most of the sets should have something like it. I am too dumb to figure out how to mark the picture, so you just got to go with the flow.
- 17,091
- 25,070
- 113
- Location
- Burgkunstadt, Germany
And this is a MEP-805A. See the valve below and to the left of the IP? Sadly, I have no pictures of an MEP-805B.
- 1,145
- 1,300
- 113
- Location
- Basehor, KS
@Guyfang in the end he probably is going to wind up taken the opt out to check for dirt accumulation on/in the small pinhole of transducer.
We found this to be the most common source of malfunction of the opt.
We found this to be the most common source of malfunction of the opt.
- 1,145
- 1,300
- 113
- Location
- Basehor, KS
Oil Sludge tends to accumulate on / in the pinhole opening.
The diameter of the pinhole varies by transducer.
Brake Cleaner or Carb Cleaner is usually sufficient to clear out the pinhole and the internal cavity
Note: the transducer in this picture is just for demonstration. The transducer on your Genset may look different or has more electrical connections, but will have a pinhole in the threaded part
The diameter of the pinhole varies by transducer.
Brake Cleaner or Carb Cleaner is usually sufficient to clear out the pinhole and the internal cavity
Note: the transducer in this picture is just for demonstration. The transducer on your Genset may look different or has more electrical connections, but will have a pinhole in the threaded part