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JD 4010 injector pump

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bill runyon

06-20-2003 07:53:17




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I need to pull the injector pump off after years of non-use and I've been told to line up the mark on the flywheel with the window and the inspection plate on the pump should have two marks that will also line up. I have turned it by hand and can only find the stationary mark on the insp. window of the pump-no other marks yet. There is some rust on the shoulder possibly hiding the mark, is the mark on the flywheel teeth or the smooth shoulder next to it? Thanks, Bill

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G-MAN

06-20-2003 10:37:48




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 Re: JD 4010 injector pump in reply to bill runyon, 06-20-2003 07:53:17  
Since the injection pump rotates at half of crankshaft speed, you have to rotate the crankshaft two turns to get the pump to turn once, so you may not have turned it far enough yet. The mark in the pump may be fairly faint (it's more of a scribed line), but you will see it when it comes around. The mark on the flywheel is on the smooth surface that the clutch slots and balance holes are cut in, towards the back of the surface. There is probably a mark that says 180, one that says 25, one that says 20 and one that will say TDC. As you're rotating the crank in it's normal direction of rotation, the marks will come up in that order. With the pump marks lined up, the flywheel mark should be as well.

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