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IDK? I came up to the shop this morning with a cup of coffee to check out the high temp fault. I reinstalled the fault indicator that I bench tested last night and flipped on the S1 power switch. Guess what? No high temp fault light! The unit was mostly cooled down last night when that fault...

I would name that machine “Christine.” This is my first MEP-831A . I’ve had several of the 5kw’s, 10kw’s, 15kw’s and a couple of the 30kw units go through my hands now. I’m willing to bet that these little 3kw’s can be a little more finicky to work with. I managed to donate a little skin from my...

I'll stop short of commenting on the wiring schematics in TM 9-6115-639-13&P. I finally found them way in the back on pages 581-591. (Thanks to fb4) I'll just say that I'm used to the awesome schematics in the other 8XX series and leave it at that! But, I think that I found what I'm looking for...

Ok, thanks Kurt. I’m going to see if I can find the schematics it the back of the TM like fb4 said. I’m sure that it’s a simple problem.

Excellent! Thanks my friend!

Interesting. Out of the blue I now have a high engine temp fault. This engine has only two switches on it. The one closest to the oil filter is the low oil pressure switch. (I disconnected it with S1 in the run position and the low oil fault did not illuminate) So the one on the rear of the...

Great idea. Thanks.

Cool! I’ve learned a lot about these MEP-831A 3kw units. It’s all adjusted and making good power. I was able to load it down and it performed great! Someone mentioned in another thread that they use a couple of small lawn mower batteries in their unit. I went ahead and purchased a couple of...

Thanks Kurt!

Very cool. Thanks for the help. Now that I know where to measure the PMA voltage I should be able to proceed here. I still don’t know if Im supposed to set the no load on the manual start knob fist though. I’ll try that. Thanks again!

Ok, the engine is back inside of this unit. I have it running and just going through the governor system set procedures. I have checked the linkage spherical nut and it’s showing one thread at the bottom. Step 2 of the actuator GAC is confusing to me. “Make sure the actuator lever reaches the...

One thing that I forgot to include in that last post. This engine kit came with (2) of the “valve caps” that I was inquiring about earlier in this thread. The parts diagram and the service diagram both only show (1) of them on the exhaust valve. I went ahead and installed the on top of both of...

Well, I had a productive and successful day with that Yanmar L70 engine. I got that bad boy back together and running on the bench. I’ve got a 12vdc fuel pump that I use around the shop to transfer fuel etc. I supplied fresh fuel to the IP and used a couple of spare 12vdc batteries wired in...

I know! I tried to Google that kit number, but nothing comes up. I actually ordered a new connecting rod and the “valve cap” from someone else because I didn’t know that they’d be in this kit. I’ll just return them.

I found a rebuild kit on eBay from “militarysurplusparts.” This kit was very complete. Not only did it include all of the seals, o-rings, gaskets, filters, needle bearings, ball bearings and much more, it also came with a new connecting rod, fuel pump and fuel injector! Genuine Yanmar parts and...

The one thing that I can add to using the compression release while cranking the engine over, is that any excessive fuel/fluid that may have been inside the combustion chamber would then more than likely be expelled through the exhaust valve (while it was held open with the compression release)...

I was out on the Olympic peninsula for a couple of days with some friends. We were out of cell range so I’m just now getting around to reading the messages. It’s cool to see the interest and the input that this thread started. I’m not really sure how the fluid got into the combustion chamber on...

When I removed the injector, I didn’t see anything wrong with the tip, it was in place and looked normal. But I will leave the injector out and hooked up to the high pressure line when I get this engine back together. Then I can crank the engine over and check the spray pattern of the injector...