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Leading-Edge Technology – Water Pumps
At Carter, we have been developing new generations of Water pumps since 2008.
The Water Pump is an element of vital importance for the proper functioning of our car, it is the heart of the engine cooling system.
The Water Pump is a high precision instrument, designed to work in extreme temperature conditions. Failure of one of its five basic components can cause serious engine failure.
To know its function it is important that we know how the cooling system of our car works.
The coolant enters the pump casing through the radiator outlet, the centrifugal force produced by the pump turbine propels the liquid through the cooling circuit. The heat produced by the engine dissipates after the coolant passes and this evacuates it to the radiator for cooling.
Most pumps have gaskets to ensure correct mounting on the engine block.
Hub or Pulley
This is responsible for transmitting the turning of the drive belt to the bearing shaft. It is made from sintered material, steel, cast iron or sheet metal.
Case or Housing
Commonly made from aluminum or cast iron, it is the structural element that supports the other elements of the pump and provides the link into the cooling circuit. There are areas of the housing that must be perfectly machined to ensure the correct fit and funtion of the pump.
Bearing
The element that transfers the turning of the hub or pulley to the impeller. Its design and quality have a direct relation to the life of the pump. There are two types of bearings: Roller-Ball or Ball-Ball. The Roller Ball design ensures greater durability and is able to sustain greater loads.
Seal
Its main function is to protect the bearing by preventing leaks and contamination from the coolant and to ensure that the pump is water tight. The quality of the seal along with a suitable coolant promotes the correct functioning of the water pump. It consists of two distinct parts, one is fixed to the body and the other rotates with the bearing shaft.
Turbine or Impeller
This is the element that drives the coolant. Its diameter, and the number and height of the fins, determine the flow and the pressure of the coolant in the cooling circuit. A reduction in the flow can seriously affect the life of the engine. The impellers used in Carter pumps are made from brass, sheet metal plastic (PPS-GF40) or cast iron; depending on original design.
Gasket
This is the element that guarantees the water tightness between the pump and the engine block. It can be made from rubber, paper or sheet metal with a rubber coating. For pumps without a gasket a suitable sealant must be used.