We replace the coolant pump if there is a coolant leak or if there is increased noise during operation
The thermostat is replaced in case of unstable engine temperature conditions: overheating or insufficient engine warm-up.
Wrenches 10 and 12 are required to replace the pump.
Disconnect the wire from the negative battery terminal
Draining the coolant from the cooling system - article "Features of the Hyundai Solaris engine cooling system"
Remove the accessory drive belt
Unscrew the four pulley bolts
Remove the pulley
We unscrew the five bolts securing the water pump to the cylinder block
Carefully pry off the water pump housing with a slotted screwdriver and remove it
Remove the gasket
Install the water pump and previously removed parts in reverse order
Replacing the cooling system thermostat
To check the thermostat on a car, start a cold engine and feel the radiator outlet hose - it should be cold.
After the coolant temperature reaches 82°C, the hose should begin to heat up rapidly, indicating the start of fluid circulation in the large circuit.
If this does not happen and the coolant temperature sensor is good, replace the thermostat.
Disconnect the negative battery terminal
Drain the coolant as described in the article - Features of the Hyundai Solaris engine cooling system
Loosen the hose clamp to the thermostat housing nozzle and slide it along the hose
Remove the hose from the nozzle
We unscrew the two nuts of the studs of the thermostat housing
Remove the thermostat housing from its studs ia
Remove the thermostat from the cylinder block
To check, we lower the thermostat into a container with water heated to 78-80 ° C
Gradually heating the water, we monitor the opening temperature of the thermostat valve
The valve should start to open at 82±1.5° C, at 95° the thermostat should open fully
Valve travel (when fully open) - 8.5 mm.
Install the thermostat in the reverse order and fill in the coolant.