Pic. 108. The scheme of cooling of the six-cylinder engine.
1 - from the engine to the radiator,
2 - from the radiator to the thermostat,
3 - bypass,
4 - from the distribution tank to the radiator,
5 - gas outlet pipeline,
6 - drain hose,
7 - from the cylinder head (intake manifold left),
8 - from the body heater,
9 - body heater.
Pic. 109. Scheme of the cooling system of eight-cylinder engines.
1 - heater, starting automation,
2 - radiator cap,
3 - thermostat,
4 - radiator,
5 - coolant pump,
6 - temperature indicator sensor,
7 - carburetor,
8 - cylinder head,
9 - cylinder block,
10 - body heater tap,
11 - body heater.
The coolant pump is mounted on the cylinder block and sealed with an oil seal. The cooling system is closed, which raises the boiling point of water to +118°C. When using antifreeze with a freezing point of -30°C, the boiling point rises to +125°C. When driving at full load, in mountainous conditions, in a convoy, on highways with long inclines, or in an area with high ambient temperatures, the coolant temperature gauge may approach the red mark without adversely affecting engine performance. When driving on long descents in vehicles with an automatic transmission, the transmission control lever can be set to the N position for better cooling of the oil in the transmission. The electromagnetic fan clutch turns on and off depending on the temperature of the coolant. The fan turns on at temperatures above +100°C and turns off at +95°C.