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Farmall & IHC Tractors Discussion Forum
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Injection pump question for someone who is an expe

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Spanna Monkey

03-19-2007 15:51:58




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Tractor is an IH 784
Have recently renewed the "O" rings in the 2 dials that control fuel cut off, and acceleration on the front of the pump. (looking at it side on) Once i managed to find the "O" rings that were the best fit, I put it all back.
The pump doen"t let any fuel from the four injector outlets now, and it def did the day before.
It"s all bled,
new filter,
pump is turning,
shut off valve wasn"t moved when re-assembled. (allthough did then move a lot just to get something to happen).

One more thing to add is that i used an impact driver to undo the screws securing the plate that held the dials. This is a handheld thing, not air impact driver! and only needed a light tap.

Just to recap..... .there is no fuel being injected. Why?

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FromJB2

03-19-2007 19:43:53




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 Re: Injection pump question for someone who is an in reply to Spanna Monkey, 03-19-2007 15:51:58  
Hi 784 has German Bosch injection pump there is no shut off solenoid. Did you have the STOP/START/RUN control cable off?
Is it adjusted properly for the START position.

So you said you had bled filters and injection pump but no fuel out the injector ports on the rear of the pump. So fuel is getting to primary pump but not to secondary pump. So STOP/START/RUN lever controls fuel into secondary pump.

Could try putting some positive air pressure on fuel tank.

JimB

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Jossette

03-19-2007 16:25:20




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 Re: Injection pump question for someone who is an in reply to Spanna Monkey, 03-19-2007 15:51:58  
loosen the injector lines at the pump and turn it over. If nothing then I would say the solenoid shutoff is stuck or crap..An inline hand primer is a wonder thing in this case.



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