cooling system

Cooling system

What are the main components?

The main cooling system components are:

• Radiator
• Radiator Cap
• Overflow or Expansion Bottle
• Radiator Hoses & Clamps
• The Cooling Fan
• The Thermostat
• The Water Pump
• The Water Jackets & Welsh Plugs

What does the cooling system do?

The cooling system removes around one third of this heat by circulating coolant through the engine. (Coolant is a mixture of water and a special liquid concentrate that helps to inhibit corrosion forming in the engine.) Heat is removed by the radiator which uses air to cool the coolant. 

The other important function of the cooling system is to keep the engine operating at a constant temperature at which peak operating efficiency is achieved. 

Most modern systems are pressurised to raise the boiling point of the coolant so EXTREME CAUTION should be exercised when carrying out maintenance, as serious scalding could result. DO NOT REMOVE THE RADIATOR CAP WHILE THE ENGINE/COOLING SYSTEM IS HOT. 

If driving in cold conditions you may need to use anti-freeze in the cooling system. Always follow the vehicle manufacturer's directions when using anti-freeze and coolant.