Hello Group! I've got a head scratcher. I'm currently working on a 2004 Malibu Wakesetter with an Indmar 5.7 Vortec. The water pump housing is leaking from the rear seal. Like a waterfall. I've looked at the parts break down and can't seem to get it to come off the splined shaft. Removed the L bracket holding it in place, removed both hoses, and even the small screw between the inlet and outlet ports just to see if that helped. Nothing. I've put a bore scope in the front of the pump where the impeller goes to see if I could find an E clip or C clip and I cant see anything. I've looked at the back of the pump, and nothing is accessible from here. I'm lost. The only thing I can see is an O-ring if you look between the louvers about mid way down the pump. I've verified that the O-Ring isn't holding it in place. I've read other forums who say "just smack it with a hammer".... Well that didn't work. Heat didn't work.. Even gently putting a bearing splitter on it didn't work. Something is holding the housing to the splined shaft. The pump spins freely and smoothly but won't come off. Any suggestions?