Fan won't come off the water pump shaft

[LizardsA]

Good day folks,

I have a problem on my 'A' where the aluminium fan won't come off the water pump shaft. I need it off to check why there is play on the shaft.

Any ideas how I can get it off without damaging the fan?

I have tried gently levering it, I have tried tapping with a small hammer and punch, but it just won't budge.

Regards
Mike
Johannesburg, South Africa