Auto Manual of VW Passat B5

3.4. Replacement of a cooling liquid

THE GENERAL DATA

Replacement of a cooling liquid is necessary for making after carrying out of any works on elements of system of cooling with сливом a cooling liquid. If at repair replacement of a head of the block of cylinders, linings of a head of the block of cylinders, a radiator or the oil heat exchanger was made, it is necessary to make pouring only a fresh cooling liquid. It is connected by that the anticorrosive additive at work of a cooling liquid is besieged and creates anticorrosive protection. In a cooling liquid were in operation anticorrosive additives are less active to form a protective layer on again established details.

Plums of a cooling liquid

The prevention
At opening of a cover of a broad tank on the hot engine it is necessary to be careful, as leaving steams can lead to strong burns. For this purpose close a cover of a broad tank a thick layer of a fabric and slowly unscrew a cover before occurrence of a hissing sound. After the hissing termination slowly unscrew, and uncover a broad tank.

PERFORMANCE ORDER

1. Lift a forward part of the car and fix on supports.

2. Remove the bottom mudguard of the engine.

3. Establish under a radiator the corresponding container.

Diesel engines

PERFORMANCE ORDER

1. Using a coin or a screw-driver with a wide edge, unscrew a carving stopper for plum of a cooling liquid from a radiator.

2. For fuller plum of a cooling liquid remove the thermostat.

Four - and five-cylinder petrol engines

PERFORMANCE ORDER

1. Using a coin or a screw-driver with a wide edge, unscrew a stopper for plum of a cooling liquid from a radiator.

2. Disconnect from a radiator the bottom hose of system of cooling. For a hose detachment take fixing скобу, located sideways connecting муфты, then disconnect a hose.

3. Unscrew a stopper plum of the cooling liquid, located on the water pump and merge cooling liquid from the block of cylinders of the engine. On the engine 1,6-I with code AHL in connection with absence of a carving stopper it is necessary to unscrew the connecting union of the thermostat.

Six-cylinder engines

PERFORMANCE ORDER

1. Disconnect the bottom hose of a radiator and merge in the container cooling liquid.

2. For plum of a cooling liquid from the block of cylinders of the engine unscrew the carving stopper located from the bottom left-hand side of the block of cylinders.

3. If the cooling liquid is strongly polluted, wash out cooling system. As cooling liquid cannot be merged completely from cooling system, it is recommended to wash out each time at plum of a cooling liquid cooling system.

Filling of system of cooling

Prior to the beginning of works prepare demanded quantity of a cooling liquid from 50 % of water and 50 % of antifreeze with anticorrosive additive G12.

Petrol engines, except the five-cylinder

PERFORMANCE ORDER

Connect the bottom hose of system of cooling to a radiator and fix connecting муфту fixing скобами.

Five-cylinder engines, diesel engines

PERFORMANCE ORDER

1. Screw up into place a stopper plum of a cooling liquid from a radiator and tighten its moment of 10 Nanometers.

2. Screw in a stopper plum of a cooling liquid with a new sealing ring in the case of the water pump and tighten its moment of 30 Nanometers.

3. If the thermostat acted in film, establish it into place.

Six-cylinder engines

PERFORMANCE ORDER

1. Screw in a stopper plum of a cooling liquid with a new sealing ring in the case of the water pump and tighten its moment of 20 Nanometers.

2. Establish the bottom mudguard of the engine and lower the car on the earth.

3. Move a regulator of temperature of system of heating to position of the maximum temperature.

4. About a partition of a motor compartment ослабьте a collar of fastening of a hose of return of a cooling liquid from a radiator of a heater also shift from the union a hose so that the union did not close an aperture in a hose for air removal.

Six-cylinder engines

PERFORMANCE ORDER

1. Unscrew two заглушки for air removal, the systems of cooling located on pipes about a broad tank.

2. Instead of a cover of a broad tank screw in carving adapter VAG 1274/9 with a tube in diameter of 42 mm and height () 100 mm. It is necessary completely to fill system of cooling of the engine with a cooling liquid and to remove from it air. In the absence of the special adaptation it can be made independently. It is alternatively possible to unscrew a broad tank from an arm and to lift it together with the connected hoses on 10 sm and to fix in this position.

3. Pouring of a cooling liquid make in a broad tank until the cooling liquid will not follow through carving заглушки for air removal. Screw up заглушки the moment of 20 Nanometers.

4. Fill in cooling liquid in cooling system until the liquid will not start to follow through an aperture in a hose for return of a cooling liquid from a heater. Dress against the stop a hose on the union and fix its collar.

5. If the broad tank acted in film from an arm, establish it on an arm. Remove from a broad tank the adaptation which was established instead of a cover, and screw a cover on a broad tank.

6. Start the engine and keep it within 3 minutes on turns of 2000 rpm.

7. Translate the engine on a mode of idling before warming up of the bottom hose of a radiator, then switch off the engine.

8. Check up level of a cooling liquid and if necessary finish it to norm.

9. On the hot engine level of a cooling liquid should be at label level max, and on the cold engine it should be between labels max and min.