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General Category => General Discussion => Topic started by: NCAmother on June 09, 2022, 09:26:52 PM
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Hi, I need to repair the threads on my oil pump shaft. I know the shaft is an m8 size, but what is the thread pitch size? Thanks
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Standard M8 thread pitch is 1.25, the first fine will be 1.0 but it may be (though I would be surprised) is 0.75.
Take a standard M6 bolt and line it up against the M8 shaft, it the pitches lock together the M8 shaft is 1.0 pitch.
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Standard M8 thread pitch is 1.25, the first fine will be 1.0 but it may be (though I would be surprised) is 0.75.
Take a standard M6 bolt and line it up against the M8 shaft, it the pitches lock together the M8 shaft is 1.0 pitch.
Yeah, I tried m8x1.00 and it didn’t work, I’m guessing I should go with m8x.75
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Yeah, I tried m8x1.00 and it didn’t work, I’m guessing I should go with m8x.75
It's an M8 x 1 on both the pumps on my bench.
Ciao
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It's an M8 x 1 on both the pumps on my bench.
Ciao
Damn, the threads are most likely screwed.
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Damn, the threads are most likely screwed.
Pun intended? :smiley: Probably not, though. That is a hardened shaft and unless there has been a shaved ape beating on it :shocked: there may just be a small ding in the end that keeps the nut from starting. Take a look with a 10 power glass. Maybe a thread file? Grind a little chamfer on the end?
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Pun intended? :smiley: Probably not, though. That is a hardened shaft and unless there has been a shaved ape beating on it :shocked: there may just be a small ding in the end that keeps the nut from starting. Take a look with a 10 power glass. Maybe a thread file? Grind a little chamfer on the end?
And make sure it's actually a 8x1 nut because 8x1 is not the standard 8mm size nut and someone may have forced the common 8x1.25 onto the shaft.
Phil