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I am trying to replace my water pump and I have reached the point where the pulley needs to come off so I can get to the bolts on the pump.
However, it seems to be stuck. I am worried about using a gear puller as I have damaged pulleys in the past doing this. Is there some trick to getting this off? Wack it with a hammer?

Thanks!
 

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I don’t believe they are pressed on. I would just tap around it with a hammer. The reason for it being so tight is the pump piece is aluminum and the pulley is steel which make them sort of corrode together.


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8 / 71 240Z, HLS30-40031, L24-052899, Sunshine Yellow
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If it is just sheet metal, penetrating oil helps and tap with a ball peen hammer between the bolt holes.
Like you would with a brake drum.
If the fan clutch is part of it, show us a picture.
 

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If it is just sheet metal, penetrating oil helps and tap with a ball peen hammer between the bolt holes.
Like you would with a brake drum.
If the fan clutch is part of it, show us a picture.
I also have a ‘73. As I recall the the 4 - 3 1/2 inch bolts holding the fan to the pulley and water pump are the only official attachment. I have always left the fan belt on and tight until I removed the 4 fan screws, then use a breaker bar to work around the backside of the pulley to get a slight movement then sprayed in WD40 to soak the rust. Then last removed the water pump. But it sounds like a good rust solvent and some tapping with the ball peen hammer sounds like an alternative option.
 
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