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John Deere Tractors Discussion Forum

Jdb injection pump

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09-30-2013 18:05:55

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Tried to get the advance screw out to rebuild this pump and it broke is it worth trying to piece it together and ruining the housing or am I better off to buy a complete one or where a good place to get parts.

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09-30-2013 19:43:34

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 Re: Jdb injection pump in reply to J.Bruns, 09-30-2013 18:05:55  
Next time inset the tool/sleeve that encircles the ballstud to keep it from breaking!

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09-30-2013 18:46:24

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 Re: Jdb injection pump in reply to J.Bruns, 09-30-2013 18:05:55  
When I rebuilt mine about a year ago the head split nearly in half when I tried to remove it with the bristol tool. I knocked the other part of the head off and got it flat enough to drill a small hole and use an extractor bit to get it out. I was careful not to drill too deep. Afterwards, I cleaned everything real good to make sure not to leave any metal slivers. Been running ever since.

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09-30-2013 18:15:02

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 Re: Jdb injection pump in reply to J.Bruns, 09-30-2013 18:05:55  
Can't you grind off enough of it to get the pump apart? I've broken a few and managed to get the pumps apart. I suppose you broke it in the fluted Bristol head (end of bolt with 6 teeth)?

Used pump cores for these machines are expensive!

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09-30-2013 19:10:12

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 Re: Jdb injection pump in reply to jdemaris, 09-30-2013 18:15:02  
Yeah I am going to try that Ive kinda chewed it up a little but was just wanting to know the cost of the housing I might try and weld something to it I guess

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