Thermostat: Service and Repair

1. Drain the engine coolant and remove the air hose.
2. Refer to the illustration for the service procedure, noting the following:





3. Place a mating mark on the radiator lower hose and the hose clamp, then, disconnect the radiator hose.








4. Install the thermostat so that the jiggle valve is facing straight up and is aligned with the mark on the thermostat case as shown in the illustrations.

NOTE:
- Make absolutely sure that no oil is adhering to the rubber ring of the thermostat.
- Be careful not to fold over or scratch the rubber ring when inserting.





5. Insert the lower hose as far as the projection of the water outlet fitting or water inlet fitting.
6. Align the mating marks on the radiator hose and hose clamp, and then connect the radiator hose.