Step 2: release the antifreeze, loosen the screws, remove the upper cover and clean up the old pad. Note: If the old pad is not cleaned, the upper cover of the thermostat will be unevenly stressed and easily broken. The sundries and antifreeze in the two screw holes are not cleaned, which will lead to the rupture of the intake pipe.
Step 3: Glue the thermostat to increase the total sealing thickness (or not). Note: 1, neither too little nor too much glue, and don't get it on the rubber pad in the middle. 2. The vent hole on the thermostat can't be stuck under normal circumstances. According to many years' experience, gluing water in the cold winter in northern China has improved the reliability of the effect to some extent. The premise is that the cylinder gasket can't leak gas, which will cause gas blockage, and the thermostat is not easy to open after high temperature (whether to block this vent hole is selected according to your own situation, and 99% of the cars are fine). If you choose to block the vent, in Figure 2, it is best to add antifreeze where the thermostat can reach in advance to prevent air blocking, but don't wet the upper edge. Glue doesn't stick easily when wet.
Step 4: Install the bonded thermostat on the air inlet branch pipe, and vibrate gently to make the glue fill the installation cornice and stick it.
Step 5: Stick on the thermostat pad.
Step 6: Tighten the thermostat coated with glue.
Step 7: Stick on the upper cover of the thermostat.
Step 8: Install the screws. Step 9: Fill it with antifreeze and start it. Note: Be sure to turn on the thermostat once to check whether there is any leakage.