there is only a locating pin on the sprocket and that is located as we just finished the pump timing ,dont know if you know the engines ,but its a chain from crank(sprocket) to pump then a belt from pump to cam shite set me thinks, but anyhow bottom pully is just flush and it sits hard against the sprocket ,thats why i am confused it still moves ??


any help would be great
and thanks so far for the replies

tommy