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Re: Tell me I don't need an injector pump

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10-04-2013 04:34:10

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Top bleed screw is seperate from injector line nuts, it can be bled later with engine running. Fuel must be at each injector with the nuts about 1/2 turn loose to get air out of each line while cranking with stop in run position. When you see air free fuel tighten the nuts and start engine. If you never get fuel at the injectors, you have pump trouble.

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Fred Werring

10-04-2013 11:27:03

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 Re: Tell me I don't need an injector pump in reply to Dieseltech, 10-04-2013 04:34:10  
Upon further review...

THOUGHT I had good air-free fuel flow from the bottom bleed screw, but found that wasn't the case, all kinds of air. (in my defense, it was getting dark, was hot, tired, aggravated, blah blah blah)

Went back to my original suspect, the lift pump, found it's not pumping at all. When I opened it up, found both of the check valves had come un-staked from the casting. Ever had any luck staking those back in?

So I guess the fuel that was coming from the lower bleed screw was the injector pump moving fuel around, had I used the hand lever instead of cranking the engine, would have figured out it was the lift pump last night.

Thanks to you and Sam for the replies


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10-04-2013 13:27:11

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 Re: Tell me I don't need an injector pump in reply to Fred Werring, 10-04-2013 11:27:03  
Never had much luck with restaking the valves once they come loose, might work awhile but they usually get loose again. New assembly works best.

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Fred Werring

10-04-2013 16:51:05

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 Re: Tell me I don't need an injector pump in reply to Dieseltech, 10-04-2013 13:27:11  
Got a new pump coming, wont be here till next Wednesday.

Put the valves back in, staked them with a chisel and screwdriver, tractor was still running when I got it back up to the shop and got the loader off of it. The hood won't open but 3" with the loader on, makes it fun getting it bled.

I'll put the new one on when it gets here, maybe keep this one on a shelf for an emergency backup

Thanks again


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