Car cooling system VW Golf 1, diesel

Description of the engine cooling system
The cooling system is designed to remove excess heat generated during fuel combustion and maintain the engine's normal thermal conditions. How cooling is carried out About 6.5...

Checking the coolant level
For normal operation, the engine needs a certain amount of coolant. Even if the car was produced after August 1982, you should check the coolant level in the expansion tank in the...

Topping up the coolant
Coolant loss is a sign of a malfunction or defect. Coolant is not consumed and cannot evaporate in a closed cooling system. What to do if coolant is lost? See section " Checking...

Antifreeze agent
In the cooling system, the necessary cooling of the engine is provided not only by pure water, but also by a mixture of anti-corrosion and anti-freeze agents. Therefore, it is...

Checking the tightness of the cooling system
Are the hoses at the radiator and engine sealed, as well as the thinner hoses leading to the heating system or oil cooler? Are there any cracks in the hoses? Replace if necessary....

Radiator — design description
The radiator has plastic tanks, between them - aluminum fins and tubes. Thin-walled tubes are connections between the left and right tanks of the radiator. To increase the cooling...

Replacement of coolant hoses
For replacement, you should buy original hoses that have the correct shape and hose clamps. Drain the coolant into a container. Disconnect the hose clamps and remove the hoses....

Radiator cleaning
Before and after the summer season, the radiator fins should be cleaned of stuck insect particles, otherwise the cooling efficiency will be impaired. Remove the radiator grille...

Draining the coolant
Remove the expansion tank cap. Move the heater valve lever to the "Warm" position. Place a container underneath. Remove the lower hose from the radiator. If you need to drain the...

Filling the cooling system
Move the heater valve lever to the "Warm" position. Fill with antifreeze. The liquid level should reach the upper mark ( see picture ). Close the expansion tank cap. Start and...

Removal the radiator
Drain the coolant. Remove the water hoses from the radiator. You can remove the radiator fan with the diffuser. In models produced before December 1980, use a wrench to loosen the...

Removal the expansion tank
In an older car, the expansion tank may become leaky. This happens because the plastic has become brittle. Use pliers to separate the hose clamps at the tank. Remove the hoses...

Cooling system plug
The cooling system plug plays an important role in the circulation circuit where there is excess pressure. When the plug is closed, the sealing surface fits tightly against the...

Checking the safety and vacuum valve
Checking the safety valve The correct operation of the safety valve is checked using a control device. First, pressure is created in the system. At a pressure of 0.9-1.15 bar (in...

Thermostat — design description
In simple terms, the thermostat determines whether the water in the radiator should be cooled or not. It therefore determines in which direction the coolant should circulate: in...

Removal the thermostat
If a new thermostat is installed, the thermostat housing sealing ring should also be replaced. Drain the coolant completely; raise the front of the car onto stands. Disconnect the...

Checking the Thermostat
You can use a home thermometer to check whether the thermostat opens at the prescribed temperature. Remove the thermostat. Hang the thermostat in a container with water and heat...

Water pump — removal and installation
The water pump circulates the coolant. The pump is located on the right side of the engine when looking at the direction of travel. The pump is driven by a V-belt. The water pump...

V-belt — inspection
On these pages you will find only the most necessary instructions concerning the V-belt for driving the water pump and alternator. For more information about the V-belt, see the...

Radiator Fan — Design Description
Our engines are equipped with an electric radiator fan, which is only switched on when necessary. In the left radiator tank (in the direction of movement) a switch is screwed in...

Radiator Fan Malfunctions
A failed fan does not mean the ride is over. After the engine has cooled down to some extent, you can drive continuously at medium speeds to the nearest workshop. In this case,...

Removal the fan motor
Remove the plug from the radiator fan. Remove the four diffuser bolts and remove them together with the fan motor. Unscrew the 3 nuts on the diffuser and remove the fan motor....

Electrolysis in the cooling system
In a cooling system with a radiator made of aluminum and a thermal switch under voltage, electrolysis can occur. Electrolysis is the separation of components from a solution of...

Checking the radiator and fan housing
The fan housing may be under voltage and thus electrolysis is caused. The test is carried out as follows: Remove the wires from the thermal switch. Connect a voltmeter between the...

Checking the thermal switch
If no voltage was recorded on the scale during the previous check, then the thermal switch should be checked. Unscrew the thermal switch. It should be replaced if it has...

Malfunctions in the cooling system
Malfunctions Cause Troubleshooting The temperature indicator arrow is located in the red field or to the right; the red overheating indicator light is flickering or on The V-belt...

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