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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

1970 JD 350

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tbird505

07-26-2006 17:39:11




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I just purchased a 1970 Jd 350 C diesel it runs very good with very little smoke, however after running it for 1 hour or so the temperature gradually goes up on the guage ( not the stock jd part)to around 210-220 degrees. Is this normal? Also if it sits for more than 48 hours the fuel seem to drain down requiring rebleeding of the filters and sometimes I have to bleed it all the way up to the injectors to get it to start up. When I first got it, it would start right up in about 2 revolutions. I have replaced the primary fuel filter like the manual suggested but it didn't seem to help. Any ideas? Thanks PAUL

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Jonathan in MA

07-27-2006 12:26:02




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 Re: 1970 JD 350 in reply to tbird505, 07-26-2006 17:39:11  
as the other guy stated, check radiator for cleanliness...and also check that the fan is mounted in the right direction .. the cup of the blades should drive the air in the direction they are cupped.whether if its a suction fan or a blower fan.. alot of people think they can reverse air flow by swapping fan position...only creates less air flow in the same direction as before.



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Shovelman

07-27-2006 05:20:09




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 Re: 1970 JD 350 in reply to tbird505, 07-26-2006 17:39:11  
Paul,

As far as the overheating, 220 would concern me. Check the radiator fins and blow it out with compressed air. Maybe treat it to a new thermostat as well. If the problem persists, the rad may need to be flushed out.

The bleed down problem may be in the lift (transfer) pump. I have seen a leaking check valve in the pump allow the fuel to leak back over time.

Good luck,
Scott



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tbidr505

07-27-2006 03:14:27




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 Re: 1970 JD 350 in reply to tbird505, 07-26-2006 17:39:11  
Sorry, It's a B



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2x4

07-26-2006 22:42:07




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 Re: 1970 JD 350 in reply to tbird505, 07-26-2006 17:39:11  
they didnt start making C models til 1972. If its a B or older, it has dry clutches. C"s had wet clutches.



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tbird505

07-28-2006 18:36:50




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 Re: 1970 JD 350 in reply to 2x4, 07-26-2006 22:42:07  
Thank you for all of your help. I checked the radiator and it seems to be plugged around the outside of the fan right where the fan creates the most air flow. I hope that blowing it out will solve the problem. Does anyone know which direction the air flows thru the rad.? I hope that it blows forward because the worst clogging is on the engine side. THANKS AGAIN PAUL



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