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Thread: New Holland 7840 SLE

  1. #1
    Junior Member
    Join Date
    Nov 2019

    New Holland 7840 SLE

    Replaced a couple of O-rings on the injection pump governor. Now I can't bleed the air from the injector lines. The tractor ran great and always started. Now I can't get it running.
    The injection pump is to be self priming. Cracked the injector lines at injectors and not getting any fuel coming threw.
    Can anyone help me out...

  2. #2
    Senior Member
    Join Date
    Feb 2013
    Co Down

    Re: New Holland 7840 SLE

    Do you mean the o rings in the top cover on the throttle shaft that goes through the lid? Have you got fuel coming through the bleed screw on the filter head when you push the primer? Can you hear the fuel/stop solenoid click when turning the key?

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