- Inspect the coolant outlet and the coolant crossover for cracks.
- Check the thermostat using the following procedure:
| 2.1. | Suspend the thermostat and a thermometer in the water with the
thermometer located close to the thermostat. |
| 2.2. | The thermostat must be completely submerged. |
| 2.3. | The coolant must be thoroughly agitated while heating. Do not
let the thermostat or the thermometer touch the sides or bottom of the container. |
| 2.4. | Apply heat to the coolant. |
| 2.5. | Record both the temperature at which the thermostat begins to
open and the temperature at which the thermostat is fully open. |
| 2.6. | The thermostat should begin to open at 1.6°C (4°F) above
the stamped temperature located on the thermostat. |
| 2.7. | The thermostat should be fully open at approximately 13°C
(24°F) above the stamped temperature located on the thermostat. |
| 2.8. | Do not attempt to repair the thermostat. |
| 2.9. | If the thermostat does not function properly, replace the thermostat
with a new unit that has been checked using this procedure. |
