4 cylinder engine
Removing
Vehicles with power steering: Remove V-belt, tilt power steering vane pump forward, see chapter «Steering».
Place a suitable vessel under the coolant pump.
Unscrew the thermostat flange -2-, drain the coolant into a vessel.
Take out the thermostat.
Examination
Measure dimension -a- at the thermostat, see drawing 19-003.
Due to the high boiling point, heat the thermostat in the coolant bath. In this case, the thermostat should not touch the walls of the container.
Control the temperature with a thermometer. The beginning of the opening of the thermostat valve is approximately +85°C, the end of the opening is approximately +105°C.
After heating the thermostat to 105°C, dimension -b- must be at least 7 mm larger than dimension -a-.
Installation
Replace the sealing ring, insert the thermostat and screw on the cover, fill in the coolant.
If removed, install the power steering pump drive V-belt.
Start the engine and let it run until the thermostat valve opens. Check the cover gasket and coolant hose for leaks.
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