Hi guys. Newbie here. Thanks for letting me into your club. Anywho, bought a 1996 310C 2 weeks ago. Bought it primarily to take trees out of the ground to make room for various projects. When I looked at the machine it ran fine. Had some leaking cylinders which the seller fixed. Weekend after he delivered it to my place. I started digging around one of the trees that had to go. After a while it suddenly started to choke when using the bucket. Almost like you are running it at too low RPM and yet demanding full bucket force. Yesterday it finally died after running it for a while. Had a hard time to start it again. Let it sit for a while, and it worked fine again. It seems that when it is allowed to rest it would work but after a certain period of work something starts to seize. It sounds like the governor (if it has one) is malfunctioning and not able to maintain RPM. Is my assumption correct? Or is there a problem with the hydraulic pump? I know it's not easy to pinpoint at something without seeing it happening. I just hate having paid that much money to having problems already. Seller won't answer phone so I can't ask if he knew about it, and if he has a clue what it could be.
Probably have garbage floating around in the fuel tank. Do you have the capacity to drain the fuel tank into storage so you can inspect tank, lines and fittings?
Shucks! I just put two 5 Gal container of fuel into the tank today. Guess I will have to see how long it will take to burn that amount. However, why does it run for, say, 15 minutes and then starting to give me grief, and not right from the get go? Thanks for your suggestion.
What he said... cheapest diagnosis you can do !!
Trash in the tank may swim around and obstruct the supply port. You may have debris "stacking up" at the first nipple or connection.
I chased the same problem you are having a few months ago with my JD410.. Ended up using a small shop vac with a piece of 3/4“ pvc taped on the hose to get tp the bottom of the tank.. You don’t need to empty the whole thing to see if it’s got a bunch of algea and other crap in it.. Start with a clean shop vac tank, take a 1/2 gal. or so out, dump into a clean white bucket..... BOOM... Now you have your answer !!
If you're going to vac it out, i'd put together a "suck bucket". Does that fuel tank have a removable screen inside the tank? check that first, if that's intact and not collapsed, then almost no amount of debris in the tank will matter. Another possibility is the injection pump weight retainer bracket, flex ring, or something like that. pull the return fitting off the top of the injection pump and blow the crud out of it, if it's full of "coffee grounds or mouse turds" then you can clean the fitting and keep going, but eventually you'll need to have the pump off and fixed.
I have run into this on 2 different Deere 310's. Bad fuel cap, not venting to tank...
When it dies, quickly go out and slowly loosen the fuel tank cap and listen for air being sucked into the tank. The strainer is #9 in the image.
If there's nothing obstructing the flow of fuel to the system the drive coupling in the pump is most likely coming apart and plugging up the check valve on the top of the pump on the return side.
As Delmer stated, the Roosa-master/Stanadyne fuel injection pump has a component that fails over time. The "mouse droppings" in the return fitting on top of the pump are clear indication of such failure . If you find that is your problem, reach out to thepumpguysc here. He can take care of you for a reasonable amount.