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JD 720 Fuel Problems

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40 JD G

02-09-2013 15:20:51

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I am looking at a 720 Diesel the guy said it just quit like he shut the switch off. He thinks it might be a injection problem, is there anything i could look for, any simple fixes. Thanks

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02-10-2013 13:42:55

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 Re: JD 720 Fuel Problems in reply to 40 JD G, 02-09-2013 15:20:51  
How about that cam idler gear? After you check for fuel flow I'd check to see that the tappets were actually functioning.

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Tx Jim

02-10-2013 04:05:52

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 Re: JD 720 Fuel Problems in reply to 40 JD G, 02-09-2013 15:20:51  
First thing I'd recommend is checking fuel flow out of tank. I wonder how long since fuel filters were changed?

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02-09-2013 17:05:06

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 Re: JD 720 Fuel Problems in reply to 40 JD G, 02-09-2013 15:20:51  
Maybe it ran out of fuel? Could be a blockage got in the sediment bowl even if the tank has fuel. But I doubt this would shut it off so quickly, it would probably slow down and die.

Another idea is the rack spring on the right hand side broke. The governor works against this spring and if it broke the governor would probably completely close the rack.

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