1 - Radiator
2 - Expansion tank
3 - Interior heater
4 - Thermostat
5 - Coolant pump
6 - Cylinder block
7 - Return
8 - Submission
9 - Throttle heating
10 - Heater tap
The water pump is driven by a belt from the crankshaft.
Before working in the engine compartment, especially in the radiator fan area, be sure to disconnect the negative cable from the battery and the fan wiring connector, because. it may turn on due to the effect of heat conduction even when the ignition is off.
Do not open the cap of the coolant expansion tank or radiator until the engine has completely cooled down to avoid burns from hot liquid or its vapor.
If necessary, open the cap of the expansion tank when the engine is hot, wrap it with rags. Remove the lid slowly, gradually reducing the steam pressure.
A description of checking and adjusting the coolant level, replacing the coolant, as well as some checks of the cooling system are given in Sections Checking fluid levels, leak control, Checking the condition and replacing hoses and tubes in the engine compartment, localizing leaks and Coolant replacement Chapters Vehicle settings and routine maintenance.