Thermostat: Testing and Inspection

THERMOSTAT INSPECTION [MZR 2.5]

1. Remove the thermostat. Service and Repair

2. Visually check that the thermostat valve is closed.

3. Place the thermostat in water.

WARNING:
- During inspection, the thermostat and water are extremely hot and can cause severe burns. Do not touch the thermostat and water.

4. Heat the water and check the following.

- Opening temperature and valve lift

- If there is a malfunction, replace the thermostat. Service and Repair

Thermostat initial-opening temperature
- 80-84 °C {176-183 °F}

Thermostat full-open temperature
- 97 °C {207 °F}

Thermostat full-open lift
- More than 8.0 mm {0.31 in}