i never take forks apart to change the seals....
i remove the circlip holding the seal the use compressed air to pop/blow the seal out..
i have a tappered rubber plug with a 6mm hole down the centre
push it in the fork top put a air/dust gun in the hole push like hell
the seals just pop out...

another way i have seen but tryed it...
remove the circlip/oil/spring hold the forks at full
length put the top cap back on...
then bounce the fork on a bit of wood... that compresses
the air in them & pushes the seal out...



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Harley Davidson..
The easyest way to turn gasoline into noise with out the side efect of horse power...