
Mechanical water pumps
Basic Information
Information on the product
What is the function of the water pump? How is a vehicle cooling system constructed? Where is the water pump in the cooling system? What types of water pumps are there? You can find out here.

1 Radiator
2 Thermostat
3 Water pump
4 Control valve
5 Heat exchanger
6 Cooling jacket
7 Radiator fan
In passenger cars, flanged water pumps are normally driven via the timing belt of the valve control system. The type of installation makes this water pump type easier to design and fewer components are required compared with water pumps that are fitted externally on the engine. However, the replacement of timing belt driven water pumps is a more labour-intensive process than the replacement of V-beltdriven water pumps. During replacement, the entire timing belt drive of the engine must be opened and disassembled. This is a complex intervention in the control of the camshaft drive. For a great deal of engines, it is essential to have engine-specific professional knowledge.
Special tools and adjustment values such as the valve timing, the belt tension and the start of delivery of the fuel injection pump (where applicable) are required for a large number of engines. Even minor deviations or errors made during this work can cause serious engine damage.


the following main groups:
1 Drive pulley
2 Bearing with pump shaft
3 Pump housing
4 Sliding ring seal cartridge
5 Impeller

of ball bearings (Fig. 1) or, in the case of
increased bearing load, combined ball/
roller bearings (Fig. 2). The bearings are
provided with a lifetime grease filling. In
order to prevent the ingress of water and
dirt, the bearings are sealed on both sides
with a radial shaft seal. In water pumps,
the bearing shaft is also a component of
the bearing. This means that the balls or
rollers roll directly off the pump shaft.


Video - WATER PUMPS/ COOLANT PUMPS - BASIC INFORMATION
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