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Case Tractors Discussion Forum
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Case 400 injector pump

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David Baldwin

05-12-2006 11:53:17




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I am working on a Case 400 and having fuel trouble. I have fuel all the way to the injector pump but nothing coming out. The filters are new, transfer pump working, and have cracked the high pressure lines, still nothing. This tractor has sat for a few years, but I was told that this is why they let it sit. ANY help is greatly appriciated!!

-David [email protected]




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CAT FISH01

05-17-2006 11:00:49




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 Re: Case 400 injector pump in reply to David Baldwin, 05-12-2006 11:53:17  
I'm assuming fuel is getting to the injection pump. there's a cover below the head of the pump,where the high pressure lines hook up, take the cover off and crank it over. If the gear isn't turning, and you said the transfer pump was, there is a shaft from the lower part of the pump that runs to the top that can break. I broke one on a 400 that sat for about 15 years. The head of the pump was sticky, and twisted off the shaft. Put the engine on TDC cylinder 1, take the injection pump off and remove a cover on the bottom of the pump near the back, it has two bolts that hold it on. The twisted off shaft with a gear will fall out. I couldn't get the cover off with the pump on the motor.

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