Combines 8050 fuel bleed back to tank

[tbran]

you either have a worn pump head_transfer pump or a air leak in the lines_filters. IF you want to take the time to find it take the line from the tank bottom and remove to pump level and make sure it is full of fuel and pressurize it with 10-15n of air. Another method to check is remove the inlet line to the pump and seal it ait tight and let it sit overnite, this will determine if the pump or lines filters to the pump are at fault. If you choose the pressure check watch to see where the fuel smear occurs, if none occurs then the head is leaking internally. Ususally this causes some engine 'rap' noise. If your unit runs fine other than that there are one way checks available in very low psi seat pressures. I think the pumps ability to draw is measured in water columns of water rather than n's.

 

[Kaye2]

I appreciate the time you took to respond Tbran, I will get into this project as soon as I get time to tinker and the weather warms up. The tractor has 6700 hours on it but runs really well through its rpm range. I will check for air leaks first and see what I come up with, then maybe a check valve if needed.

 

[John]

I had the same problem with an 8030 with less than 4000 hours and it ran fine other than more variation in RPM than I like. Sent the pump out for rebuild and it was a mess. Rebuilding solved the starting problem, but had to send it to another shop to get the RPM problem fixed.

 

[Kaye2]

I would be very happy to fix the starting problem without taking the pump off, I haven't worked the tractor much as I just got it a few weeks ago but it seems to run right the little I have used it. Rented a 7020 about 10 years ago that did the exact same thing as this 8050 but it was much less of a problem once we filled it with fuel.