Thermostat: Service and Repair
Thermostat ReplacementRemoval
1. Drain the engine coolant.
2. Remove the air cleaner.
3. Remove the upper radiator hose (A), the lower radiator hose (B), the heater hoses (C), and the water bypass hose (D).
4. Remove the water passage (A), then remove the thermostat (B).
Installation
1. Remove old liquid gasket from the water passage, thermostat housing mating surfaces, bolts, and bolt holes.
2. Apply a 1.5 mm wide bead of the liquid gasket on the water passage, P/N 08117-0004, 08718-0001, 08718-0002, 08718-0003, or 08718-0009, along the broken lines (A).
NOTE: Do not install components if too much time has passed after applying the liquid gasket. (for P/N 08718-0002, no more than 4 minutes, for all others, no more than 5 minutes). Instead, remove the old residue and reapply the liquid gasket.
3. Install the rubber seal (A) on the thermostat (B), then install the thermostat with the pin (C) up.
4. Install the water passage (D).
NOTE: After assembly, wait at least 30 minutes before filling the engine with coolant.
5. Install the upper radiator hose (A), the lower radiator hose (B), the heater hoses (C), and the water bypass hose (D).
6. Install the air cleaner.
7. Refill the radiator with engine coolant, and bleed air from the cooling system with the heater valve open.