Thermostat: Service and Repair

Removal
^ Be careful not to spill coolant over engine compartment. Use a rag to absorb coolant.

1. Drain engine coolant.
2. Remove radiator hoses (upper and lower) and fan shroud.
3. Remove drive belts and pulley bracket.





4. Remove water inlet and thermostat assembly.

Inspection
1. Check the thermostat valve seating condition at ordinary room temperature. The valve should seat tightly.








2. Check valve opening temperature and valve lift.
3. Check if valve closes at 5°C (9°F) below valve opening temperature.

Installation
1. Use a scraper to remove old liquid casket from water inlet and engine mating surfaces.





2. Apply a continuous bead of liquid gasket to mating surface of water inlet.
^ Use Genuine Anaerobic Liquid Gasket or equivalent.





3. Install thermostat with jiggle valve or air bleeder at upper side.
4. Install water inlet housing.
5. Install pulley bracket and drive belts.
6. Install radiator hoses (upper and lower) and fan shroud.
7. Refill engine coolant.
^ After installation, run engine for a few minutes, and check for leaks.