Water Pump: Description and Operation

WATER PUMP
DESCRIPTION
The water pump is a die cast aluminum housing with a swept vane impeller. It attaches directly to the timing chain cover. The pump is driven from the crankshaft by a single serpentine drive belt. The water pump impeller is pressed onto the rear of a shaft that rotates in bearings pressed into the housing. The water pump seals are lubricated by the engine coolant.

OPERATION
A centrifugal water pump circulates coolant through the water jackets, passages, intake manifold, radiator, cooling system hoses, and heater core. The coolant absorbs the heat generated when the engine is operating. The water pump is driven by the crankshaft via the serpentine drive belt.