Engine Cooling System - Belarus 1822.3 Operator's Manual

3.1.4 Engine cooling system

The system of engine cooling is a liquid closed-type, with forced coolant circulation
from a centrifugal pump, two thermostats and a deaerating-compensation circuit. It in-
cludes a cooling jacket, a water pump, a radiator with an in-built deaeration system, a fan,
an expansion tank, connection hoses, clamps, drain plugs, a plug of the expansion tank
with steam and air valves. The engine thermal mode is controlled by a thermostat. The
cooling system radiator is a ribbed-tube type.
The operating range of the cooling system is 80 to 98°C. A short-time (up to 10
min.) increase of temperature to 100°C is allowed. Coolant temperature is controlled on
the coolant temperature indicator and a pilot lamp of the engine coolant emergency tem-
perature on dashboard. The pilot lamp of the engine coolant emergency temperature goes
off within the temperature range 102 to 109°C. Information on the parameters mentioned is
transmitted to master instruments via CAN cable from the electronic unit of engine control,
that handles signals from sensors.
Installation of elements of the engine cooling system is introduced in figure 3.1.6.
Arc to attach air
purifier filter
1 – tie-rod; 2 – upper compactor; 3 – side compactor; 4 – radiator; 5 – fan case; 6 –
deaeration tube; 7 – pipe from engine water pump to water radiator; 8 – feeding tube; 9 –
expansion tank; 10 – expansion tank plug; 11 – drain plug or tap; 12 – pipe from water
radiator to engine; 13 – fan.
Figure 3.1.6 – Installation of elements of engine cooling system
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