In this section, articles on the device and repair of components and assemblies of the engine cooling system of the VAZ-1111 Oka car.
Cooling system device The cooling system is liquid, closed type with forced circulation of liquid, with a translucent expansion tank. The cooling system consists of a centrifugal pump 5 (pic. 8),...
Removal and installation of a radiator Removal operations are carried out on a cold engine. Open the heater valve (the crane drive handle is set to the extreme right position). Unscrew the drain plugs of the engine and...
Removal and installation of the pump of a cooling liquid Disconnect the wire from the terminal «minus» battery. Drain the coolant into the container through the drain holes of the engine and radiator with the expansion tank cap removed...
Dismantling and assembly of the pump of a cooling liquid For disassembly, the puller compresses the toothed pulley 9 with a puller ( see fig. 10 ) pump. Turn out the locking screw 1 and press out the mandrel 67.7853.9569 (pic. 49)...
Check and repair of the coolant pump Remove deposits from the impeller and housing, wash the parts. The axial play of the bearing with the shaft is checked, which should not exceed 0.13 mm at a load of 49 N. If the...
Checking and repairing an electric fan It should turn on with the engine running when the arrow of the coolant temperature indicator goes into the red zone of the scale. If the fan does not turn on, this indicates a...
Checking and repairing the radiator After removing the radiator, check its tightness in a bath of water. To do this, the pipes are closed and compressed air is supplied into it at a pressure of 0.2 MPa. Immerse the...
Checking and repairing the thermostat At the thermostat, the temperature of the beginning of the opening of the main valve and the stroke of the main valve are checked. The thermostat is installed on the stand...
Coolant replacement Remove the plug of the expansion tank and open the valve of the heater of the passenger compartment. Substituting a container under the engine, unscrew the two drain plugs (in the...