REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Volkswagen Passat B3 / B4 (c 1988 and 1996 model year)

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Volkswagen
	Passat B3 / B4
		Operation of the vehicle
		Maintenance
		Engines
		Cooling
			Overview
			Checking the tightness of the cooling system hoses
			Checking the coolant level
			Substitution coolant
			Flushing the Cooling System
			Overall control of the cooling system
			Removal and installation of elements of the cooling system
				Radiator
				Thermostat
				Pump cooling system
				The cooling fan
				Sensor incorporating fan
				Coolant temperature
				Thermal injection system
				Replacement technology plugs
				Heater
				Heater controls
		The power supply system
		Ignition system
		Coupling
		Transmission
		Drive the front wheels
		Suspension
		Steering
		Brakes
		Wheels and tires
		Heating, ventilation and air conditioning
		Electrical
		Body
		Electrical diagrams

printable version

Removal and installation of elements of the cooling system

4.7.1. Radiator

4.7.2. Thermostat

4.7.3. Pump cooling system

4.7.4. The cooling fan

4.7.5. Sensor incorporating fan

4.7.6. Coolant temperature

4.7.7. Thermal injection system

4.7.8. Replacement technology plugs

4.7.9. Heater

4.7.10. Heater controls

Fig. 4.4. Elements of cooling systems: 1 - a bolt; 2 - the top cover; 3 - an air inlet; 4 - mounting bracket; 5 - the radiator; 6 - the rubber ring; 7 - a sealing ring; 8 - thermal switch; 9 - the plug; 10 - a hose; 11 - expansion tank; 12 - housing; 13 - an arm of the fans; 14 - a nut; 15 - additional fan; 16 - the main fan; 17 - the bottom hose; 18 - the drive belt; 19 - the top hose

Functionally, the cooling system can be divided into land system extracts the heat from the engine components, the site of dissipating heat (Fig. 4.4), including a system for heating the passenger compartment. Elements of the system extracts the heat from the engine are channels in the cylinder head and the cylinder block and are not considered here. Next will be given elements to help dissipate heat.

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Overall control of the cooling system

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Radiator