Very possible it was just installed backwards. On my 3124, “TOP” is hand written in marker on the top side of the fan hub, so it wouldn’t surprise me there was a time when they not so infrequently were installed upside down.
Dave
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2000 2720SL & 2007 3124KB
2005 Toyota Sequoia
Twin Battle Born 12v 100Ah LiFePO4 (BBGC2) batteries, 300W solar on rear shell, Link 10, Lift kit, Maxxis 8008 225 75/R15 E tires
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