| Removal and Installation |
Removal of the thermostat would have an adverse effect, causing a lowering
of cooling efficiency. Do not remove the thermostat, even if the engine
tends to overheat.
|
| 1. |
Disconnect the battery negative terminal.
|
| 2. |
Remove the air cleaner.
(Refer to Intake and Exhaust System - "Air Cleaner")
|
| 3. |
Drain engine coolant so its level is below thermostat.
(Refer to Cooling System - "Coolant")
|
| 4. |
Disconnect the radiator lower hose (A).
|
| 5. |
Remove the water inlet fitting (A).
|
| 6. |
Remove the thermostat (A).
|
| 7. |
Install in the reverse order of removal.
|
| 8. |
Fill the engine coolant.
|
| 9. |
Start the engine and check for leaks.
|
| 10. |
Recheck the coolant level.
|
| Inspection |
| 1. |
Immerse thermostat in water heated to over 95°C (203°F), then heat for
at least 3 minutes to check valve lift.
|
| 2. |
Check the valve opening temperature.
If the valve opening temperature is not as specified, replace the thermostat.
|
| 3. |
Check the valve lift.
If the valve lift is not as specified, replace the thermostat.
|
Water Temperature Control Assembly Repair procedures
Thermostat Troubleshooting