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REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Volkswagen Passat B5 (from 1996 to 2004, the year of issue)

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Volkswagen Passat B5
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Volkswagen
Passat B5
Instructions
Maintenance
Engines
Cooling
general information
Topping up the coolant
Composition of the mixture coolant
Substitution coolant
Thermostat
Radiator
The water pump (engine-I 1,8 and I 1,6-ADP)
Coolant hoses
Malfunction of the cooling system
Fuel system
Motor Control
An exhaust system
Transmission
Chassis
Steering
Brakes
Body
Heating, ventilation
Electrical
 


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Cooling



The cooling system of the engine 1,6-I / 1,8-I

1 - a heater radiator;
2 - the return line;
3 - the throttle body;
4 - a broad tank;
5 - heat oil;
6 - the inlet manifold;
7 - the upper radiator hose;
8 - lower radiator hose;
9 - radiator;
10 - the coolant supply line;
11 - the water pump / thermostat;
12 - cylinder head / engine block;
13 - a connecting pipe

The cooling system of the diesel engine

1 - a heater radiator;
2 - oil heat exchanger;
3 - a broad tank;
4 - the upper radiator hose;
5 - the lower radiator hose;
6 - the radiator;
7 - the water pump;
8 - the engine block

Engine Cooling Units 1,8-I

1 - screw, 20 Nm;
2 - the bottom casing of a gear belt;
3 - a sealing ring. When installing, use a new sealing ring;
4 - the water pump. The thermostat is disposed in the housing of the water pump;
5 - oil heat exchanger mounted on the holder of the oil filter;
6 - fixing bracket;
7 - electric socket;
8 - the coolant temperature sensor. The coolant temperature sensor for engine control and the temperature gauge;
9 - the plug;
10 - to the radiator heater;
11 - connecting pipe;

12 - a bolt, 10 Nm;
13 - pipeline for a cooling liquid;
14 - the throttle body;
15 - from the heat exchanger;
16 - pipeline for a cooling liquid;
17 - a cover;
18 - a sealing ring;
19 - expansion tank;
20 - the coolant hose;
21 - an arm. The bracket is designed for mounting V-ribbed belt tensioner, viskomufty radiator fan impeller power steering pump and alternator.
22 - a belt;
23 - radiator fan impeller

Fan and radiator vehicles with four-cylinder engines

1 - the impeller;
2 - visco-coupling;
3 - schkiv;
4 - an arm;
5 - the front cross member;
6 - Blind radiator;
7 - consolidation;
8 - radiator

The cooling system includes a water seal-type pump driven by auxiliary drive belt, fan radiator termovyazkostnoy coupling, a radiator, an expansion tank, a thermostat and a radiator heater, as well as hoses and switches. When starting a cold engine coolant circulates around the cylinder block and cylinder head. Warm coolant passes through the radiator heater to the water pump. Since the coolant expands when heated, it increases its level in the expansion tank. Receipt of the coolant through the radiator is closed, which provides indoor thermostat. When the coolant reaches a predetermined temperature, the thermostat opens and hot coolant flows through the radiator hose, since the cooling fluid passes through the radiator, it takes a counter-flow cooling air. Termovyazkostnaya clutch radiator fan is switched depending on the temperature of the heat sink. Upon reaching a predetermined temperature in the sleeve valve opens and termovyazkostnaya clutch drives the fan wheel. When the coolant temperature is in the range from + 92 ? to + 98 ? C temperature sensor includes a first step of the cooling fan and the fan rotates at a reduced speed. When the coolant temperature is from + 99 ? to + 105 ? C, the temperature sensor comprises a radiator fan for the second stage and the fan rotates at maximum number of revolutions.

Fan power can be turned on and turned off the ignition. Therefore, when working with a hot engine for the time of work is necessary to disconnect the electrical connector from the fan motor.


A warning

When you open the cover of a broad tank on the hot engine must be careful, as the emerging vapors can cause severe burns. To do this, close the cover of the expansion tank with a thick layer of tissue and slowly unscrew the cap until the hissing sound. After the cessation of fizz slowly unscrew and remove the cap from the expansion tank.

Do not allow coolant to clothing and body paint. Otherwise, rinse with plenty of water.






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