Re: HELP!!! JD 730D Run out of fuel and stuck in f

Posted by msb on December 20, 2004 at 15:20:11 from (12.203.208.136):

In Reply to: HELP!!! JD 730D Run out of fuel and stuck in field posted by Matt T. on December 20, 2004 at 12:54:19:

Sometimes it takes a long,long time to get all the air out of the fuel filters and fuel manifold.If you can tell which filter is first remove that plug first and then open the second after no more air comes out of the first filter.I can't remember,but I think it is the right(first stage) filter.Put the plugs back in and let it set for a while and try again.You are working with gravity on these tractor fuel systems.
Next, remove the return fuel line on the injection pump cover.The line is located on the left side of the engine and a few inches in front of the starter or pony motor.I think it takes an 11/16" wrench or maybe a 5/8" wrench,I can't remember.Just take it loose there and push it over to the side.There were two different setups coming up out of the cover.The first was a simple(small) open fitting and the second(about golf ball size) which was an optional upgrade that came later after the tractor was built.It contained a spring and a ball which caued the transfer pump to build about 10# of pressure(Suppose to have given the tractor a bit more power and it did).If your tractor has the larger(upgrade) fitting,It takes a much larger wrench to remove the top of the fitting.Maybe a 1 1/16" wrench.
In either case remove what you have and let the fuel flow until you don't see any more air bubbles.Remember it may take several tries before you get all the air out of the system.Usually owners of 730 Diesels only let them run out of fuel once.LOL.----The 70s and early 720s didn't have this return line.They just had a plug in the fuel manifold as I recall.---Good luck,bob

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