1 | Coolant thermostat |
1/1 | Primary valve |
W20.10-1001-01
Inspect | |||
1 | Remove the coolant thermostat (1) | Remove/install coolant thermostat | |
2 | Lift the coolant thermostat (1) using a wire in a container filled with water | ||
Warning | Risk of injury. Skin or eye injuries may result when handling hot or glowing objects. | Wear protective gloves, protective clothing and safety glasses, if necessary. | |
3 | Heat the water with a suitable heat source. | Under no circumstances should you use a welding torch or soldering iron torch to heat the thermostat (1), otherwise the thermostat (1) will be damaged. | |
Shake the water in order to equalize its temperature at all points. | |||
4 | Measure the water temperature | The heating rate should not be greater than 1 to 2°C/min. from approximately 8°C below the start of the opening of the coolant thermostat (1). | |
Pay attention to the standard or tropical versions of the coolant thermostat (1). | |||
Nominal temperature | |||
5 | Heat the water to the full opening temperature of the main valve (1/1) and measure the course | The main valve (1/1) must be fully open after 6 to 8 minutes. If the test values are not achieved, replace the coolant thermostat (1). | |
Main valve | |||
6 | Check the coolant thermostat (1) | Remove/install coolant thermostat |
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