Removal and installation of thermal screens (Chevrolet Cruze J300)

During engine operation, the exhaust system heats up to a high temperature, so if there is severe mechanical damage or significant corrosion of the heat shields installed on the system elements, be sure to replace them. In addition to reducing the comfort level in the cabin, a malfunction of the heat shields can lead to a fire in the heat and sound insulation of the body floor.

You will need a 10 mm wrench.

For removal exhaust manifold heat shield do the following.

1. Disconnect the wire from the negative terminal of the battery.



2. Disconnect the wiring harness connector from the oxygen concentration sensor.



3. Remove the three bolts securing the heat shield to the engine cylinder head...



4. ...and move the heat shield away from the exhaust manifold.





5. Pass the wire with the oxygen concentration sensor connector through the hole in the heat shield and remove the exhaust manifold heat shield.

6. Install the exhaust manifold heat shield in the reverse order of removal.

For removal heat shield for the inlet pipe and additional muffler do the following.

1. Remove the exhaust pipe (see "Replacing the inlet pipe"). Remove the main and additional mufflers (see "Replacing the main and additional mufflers").



2. Unscrew the seven nuts securing the heat shield to the base of the body...



3. ...and remove the heat shield.



4. Install the heat shield of the inlet pipe and additional muffler in the reverse order of removal.

For removal heat shield of the main muffler do the following.

The main muffler heat shield consists of two parts.

1. Remove the main and additional mufflers (see "Replacing the main and additional mufflers").




2. Unscrew the bolts of the fuel tank mounting clamps (see "Replacing the fuel tank and its filler pipe") and install a support under the tank.

3. Use a screwdriver to pry up the pin of the plastic piston securing the front part of the main muffler heat shield to the fuel tank...



4. ...and remove the piston.

5. Remove the front part of the main muffler heat shield.



6. Unscrew the four nuts securing the rear part of the main muffler heat shield...





7. ...and remove the rear part of the main muffler heat shield.

This is how the nuts securing the heat shield of the main muffler to the base of the body are located.

8. Install the parts in the reverse order of removal.