M/ Super M water pump shaft driver

gab

Well-known Member
Pulled the radiator out of my Super M today and noticed the two pins with the springs are just barely inside the holes in the driver. I turned the driver around and that puts the pins flush with the frt. of the driver. Is there a washer or bearing missing or can the impeller slide off the back of the shaft? Acts like the shaft is 1/2 inch too long.
 
There should be springs on the pins. That's what holds the impeller up against the seal. I'm trying to think which way the driver goes but yeah, I suppose if the impeller is too far worn it would loose contact with the pins.
 

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