Never remove the expansion tank cap when the engine is hot.
When working in the engine compartment, also be careful not to suddenly turn on the fan or radiator fans.
Do not open the bleeder plug or plugs while the engine is running.
Flushing the system and refueling must be done with a warm or cold engine.
Never flush the cooling system when the engine is hot (to prevent severe heat stroke).
Scheme of the cooling system for K4M engines:
1 - engine;
2 - radiator of the engine cooling system;
3 - heater radiator;
4 - expansion tank;
5 - water pump pulley;
6 - thermostat;
7 - thermostat housing;
8 - inlet pipeline of the water pump;
9 - fitting for pumping the brake drive;
10 - drain plug.
The engine cooling system of the car models currently produced has the following main characteristics: a closed system under pressure (safety valve in expansion tank cap).
Calibration values for expansion tank plug valves. Expansion tank plug valve:
- with the image of a yellow hand - 1.4 bar
- with the image of a white hand - 1.6 bar
- with the image of a gray hand - 1.8 bar
The system uses only coolant type «D».
Coolant quantity
Peculiarities:
- at temperatures up to -25°C±2 for countries with a cold and temperate climate;
- at temperatures down to -37°С±2 for countries with a very cold climate.
Scheme of the M4R engine cooling system:
1 - engine;
2 - radiator of the engine cooling system;
3 - heater radiator;
4 - expansion tank;
5 - water pump pulley;
6 - thermostat,
7 - thermostat housing;
8 - inlet pipeline of the water pump;
9 - gearbox oil cooler;
10 - throttle valve block;
11 - fitting for pumping the brake drive;
12 - drain plug.
Thermostat calibration