Well actually, I think the nut is reverse-threaded, so you'd be spinning it clockwise to loosen. The engine also spins clockwise looking from the front. The fact is, you wouldn't be asking this question if you had to turn it counter-clockwise to loosen it now would you?
You are overthinking this. If you follow simple rule you will never go wrong. Chevy, Ford, BMW, Mercedes. Start the engine and see which way fan turns.
But the water pump spins clockwise... (looking towards the engine). But honestly I'm not sure anymore, but I can explain why the fan is loosened in the direction of rotation. The fan blades cause a "reactive" torque in the opposite direction of engine rotation (+ their inertia also, but that gets overcome once the blades start spinning, the air resistance would be the larger effect), so if the engine rotates clockwise, then the fan is tightened counter-clockwise, because it will be constantly trying to tighten itself when the engine is running.
Guys, you are confusing the direction of the rotation of the belt with direction of the rotation of the water pump. Belt turns clockwise. Pump turns counter clockwise.....
Look at Witek's PDF properly & imagine the belt turning clockwise. The belt turning clockwise rotates the pump counter clockwise.
As long as discussion is clean and on subject there is nothing to feel sorry about.:wink
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