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

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Volkswagen Passat B3 / B4
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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
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Drive the front wheels
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Electrical
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Electrical diagrams
 


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Radiator



Removal and installation of the radiator in the following order:
- Disconnect the negative terminal of the battery;
- Drain the coolant from the cooling system;
- Remove from the vehicle front transverse panel lights;

Elements of cooling
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


- Loosen the clamps and remove the top 19 and bottom radiator hoses 17 (see. Fig. 4.4);
- Disconnect the plug from the temperature sensor 8, the radiator fan;
- Loosen the 4 mounting brackets;
- Being careful, remove by lifting up the radiator from the vehicle 5;
- Unscrew the bracket 13 and the air intake fan 3 from the radiator, then unscrew the nuts and disconnect the fans 15 and 16 of the air intake;
- Unscrew the sensor 8 and gasket 7;

A WARNING
Repair damaged radiator is better to entrust a specialized workshop. Small leaks can be eliminated independently, using the technology and formulations described in the automotive literature.

- Check the radiator and if necessary, rinse it with clean water;
- Wash the outside of the radiator with clean water and a soft brush, gently scrubbing down between the radiator elements of the leaves and the remains of insects.
Installation spend to sequences, return to removal, taking into account the following points:
- Replace the rubber ring 6 on the guide at the bottom of the radiator;
- When setting the top panel, align the holes for the two screws with the holes in the radiator;
- Pour coolant in the cooling system;
- Check the adjustment of headlights.




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Removal and installation of elements of the cooling system
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Thermostat

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