water impellor direction

[mawshj]

the correct direction is obtained by rotating the impeller in the normal direction of shaft travel and let the blades curl back. the blades are designed to act as a displacement pump at low speeds and to flex under pressure at high speeds and act as a centrifical inpeller and thus relieve some water pressure. a sump pump only runs at one speed. I have rarly seem an impeller worn out unless someone was plowing with it for a long time. the cost in fixing a water pump is the labor ,so always replace it when you have the engine open