REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Mercedes-Benz E-Class

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Mercedes-Benz
	E-class
		Introduction
		Description of the model Mercedes E-Class
		Working conditions and tools
		Car Care
		Diesel engines
		Petrol engines
			Overview
			Lubrication system
			Cooling system
				The circulation of the coolant
				The excess pressure in the cooling system
				Features Cooling System 6- and 8-cylinder engines
				Additional electrofan
				Checking the tightness of the cooling system
				Coolant
				Thermostat
				Removing and installing radiator (for engines of 2.0 and 2.3 liters)
				Possible failure of the cooling system, their causes and remedies
			The engine management system
			Power system
			Exhaust
		Transmission
		Chassis
		The brake system
		Electrical
		Shop
		Body
		Applications
		Diagrams

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The excess pressure in the cooling system

The cooling system with the engine running under pressure. Therefore, the boiling point rises from +100 to +126 ?� C.

Heat promotes a more economical engine operation. The excess pressure in the cooling system is about 1.4-1.5 bar. If the engine is hot the pressure in the cooling system rises, opens the pressure reducing valve on the lid of the expansion tank and the pressure is released to the atmosphere.

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The circulation of the coolant

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Features Cooling System 6- and 8-cylinder engines