Combines kw see posted reply below MIl and valve

[kw]

Tbran, Thanks, I will get out the parts and shop book and see if I can figure out what you are talking about. I may have more questions later. Also did you read what Dan had said and if so are you both getting to the same fix using different paths, or completely different diagnosis. As for your MIl if she can get crows to return corn, send her up anyway as with today's prices we can always use more bushels of corn. If for no other reason than to help pay for the Cummings replant we put in the (hyperharvest edition) N5 this harvest. Thanks, Kirk

 

[tbran]

Sorry, you need to do the math, no matter how much corn the feed costs would exceed the income. I'm sorry I didn't read Dan's post til now. I will have to think on that a while. I think what he is talking about will work. drilling the load check ( load checks are the latest method to prevent back flow and back seepage) will be more efficient fuel wise, I think.

 

[kw]

Tbran, I forgot to say we also have a 7580, so to try your plan could we just swap the poppet between the 4w-220 and the 7580IJ That way if it didn't give us the results we wanted we wouldn't have a drilled poppet to try to fix. Possibly a salvage yard if this wouldn't work. Your idea seems the simplest, so I think we will try it first before giving Dan's ideas a try. Thanks, Kirk

 

[tbran]

NO they are TWO DIFFERENT VAlVES! Won't work.

 

[NDDan]

I hadn't paid a whole lot of attention what is doing what on these things for alot of years so I just suggest the guys to do as I suggested and it seems to work. I will try what Tim suggests myself some time for that may be better way to go. I did find in my notes from years ago where I lengthened flow control spool by approx. 1_8" to cause it to run into load check and hold it off its seat. Not a very accurate way to try accomplish what Tim did and don't remember it doing much for me. I also should mention I lock out the valve for motor by tightening adjustable setscrew in end of spool not wireing or tarp straping the lever. I'm not positive what is causing a momentary stop in your system but think it is posible the swash plate in pump is overcorrecting when marker system dead heads. I was a little nervous about suggesting you to cause system to standby at high pressure because some 4W220s may not have rear housing cooler for I know some 7580s did not. I'm not sure how much extra power you will consume or heat you will create for the amount of flow you are using at whatever pressure is what determines that. Don't get me wrong for I would rather let system run at lowest pressure it takes for job but with these older valves they don't have the pressure compensater built into them like newer valves. You maybe best to try Tims trick which may allow system to run at lower pressure and not stall for you and if it that doesn't do the trick you can quickly do what I suggested without reversing anything you allready did. let me know how it works. Good luck