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Ironhead Sportster Motorcycle Talk (1957-1985) For all those that wanna talk about Ironhead Sportster Motorcycles

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Default how to pull oil pump

I *think* my oil pump may be bad. When I yank on it by hand, it won't come off easily. I've got it out by about 3/16". When I twist it a tad the gear that runs off the crank gear doesn't turn accordingly. It turns a little but not accordingly.

So I wonder if I need to pry it off and if that will be okay and not damage anything?
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A total guess here. but the fit is not interference, but a tight fit. Even by hand, and no problems they can be hard to pull. but, it is probably all the shavings from the lunched tappet, in the bore, making it hard to pull. Try pushing it back up, cleaning with brake cleaner or some kind of cleaning fluid, blowing out with low air pressure and lubing it up with WD or PB and working it slowly out, and back in, over and over until it comes out. Even a little heat from a small torch may help, with expansion of the case. Do not try to pry on it, as you can do damage to both pump and case.
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mine was tight.i used a block of wood about 6- 8'' long and tapped on it,at the top of the timing gear with a ball peen hammer.it moved about a 1/4'' every time I hit it.
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actually it was the roll pin that is through the gear that runs off the crank shaft...shoulda looked at the book but I have an old tailbone injury and a hemorrhoid calling my name today lol actually it hurts too bad to be funny.

the underside of the pump just comes off, I didn't see that
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that just came up 3 weeks ago on another '72 http://xlforum.net/forums/showthread.php?t=2069778
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