Combines 1680 UPDATE

the fuel vent hose goes to the air plenum chamber on the right side. make sure the hose is away from air flow not pointing at the air flow. big problem back then maybe never got changed.

I put a new vent hose on, hanging it beside the tank, with a cloth tied over the end to prevent dirt from sucking in. The old one was plugged tight

Congrats on getting her fixed and up and running and thanks for the feedback. Mike

If you think the dirt comes in the breather tube put an in line fuel filter on it. Put it in a vertical location with the bottom end open to the air. this way you can tap the dirt out of it when you think of it.

you can also use vented fuel cap and smash fuel vent tube,

So, do you think the govenor is working ok on the new engineIJ I know you havent had enough time to do all the tests you'd probably like to yet, but, at this point, what is the method of operation you think you wil useIJ ie, engine speed, or rotor speed or power meterIJ I forgot wether you have a grain loss monitor or not. If you are running at what you tink is a safe enough load that you would'nt have any trouble starting again, have you thought about doing a "quick kill" and seeing how your sieves are loadedIJ I wonder if part of the reason you are getting cob pieces is that the chaffer may be overloaded on one side or the other when you start to push it a little. Anyway, I'm glad to hear that you are able to get in the field. Keep us updated on your progress. It is good to hear what you find. Farm Kid 2 puts together reports on some of his trials sometimes, they are always a sorce for information. Have you ever read themIJ

I will try to answer all your questions. No, I don't think the governor is working. If my power meter is working correctly, I couldn't come close close to his power level on the meter as I lost rpms real quick. As of right now, I am going to use engine RPM's as the guage, so as to not let it get "underneath the load". With the engine running 2640, I am moving right along the way it is. Any faster for me, if I was unloading on the go, it would be true meaning of "catching on the fly". Also, I do a grain loss monitor, but I do not trust it. I played with it yesterday, and just wasn't comfortable. Right now I am not comfortable doing a quick kill, unless I had an "expert " with me. I have slugged the rotor enough in past years, I am gunshy. The side overloading could be the answer, but I was going to atribute it to alot more material in the separating area (with the scallope bars) breaking up against itself. The bits are about the size of a nickle and is more often tips. It comes in more when the machine runs empty.btw the (standard) Fan is running 1000rpm. Yes I have read some of Farm Kid2's info. It would be great if he could put it in pamphlet form. Hopes this gives you more to think about

Yes, it does, thank you. I to am somewhat mistrusting of grain monitors. My reasons though could simply be somewhat the area that I farm in. Some of the crop vatieties as well as weed seeds, seem to fool the monitor. I would have to spend too much time resetting it. You know, I wish you had a manifold pressure guage that would read in psi. That way you would know exacty what the engine is doing for boost. Around these parts, we dont run much over about 23 psi on tractors or combines, unless specified by the manufacturer. I understand your concerns on the quick kill, it does seem like it is tough on the machine, but it is easier on it than a slug

If you loose RPM like that I think you should consider sending the pump to a good pump shop. I wouldn't worry about it this year, but over the winter it would be worth doing. The governor setting, the timing, and the fuel is everything for these Cummins engines. I can get you the contact info for a guy that is REAllY good. I would stack his recipe for your engine up against most 2388's from the factory.

You shouldn't worry about doing a quick-kill, it's described and validated in the manual of these combines, it should be fine. We've done them many times with no damage.