Thermostat: Service and Repair

REMOVAL AND INSTALLATION
Be careful not to spill coolant over engine compartment. Use a rag to absorb coolant.
1. Drain engine coolant.
2. Remove lower radiator hose.
3. Remove water inlet, then take out thermostat.





4. Install thermostat with jiggle valve or air bleeder at upper side.
^ Apply a continuous bead of liquid gasket to mating surface of water inlet.
^ After installation, run engine for a few minutes, and check for leaks.

INSPECTION





1. Check for valve seating condition at normal room temperature. It should seat tightly.





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

Water Outlet
INSPECTION





Visually inspect for water leaks. If there is leakage, apply liquid gasket.

INSTALLATION





1. Use a scraper to remove old liquid gasket from water outlet.
^ Also remove traces of liquid gasket from mating surface of cylinder head.
2. Apply a continuous bead of liquid gasket to mating surface of water outlet.
^ Use Genuine RTV silicone sealant part No. 999MP-A7007 or equivalent.
^ When installing, tighten water outlet bolts to the specified torque.
Tightening Torque: 6.3 - 8.3 Nm (0.64 - 0.85 kg-m, 55.6 - 73.8 inch lbs.)