Removing and installing exhaust manifold with catalytic converter assembly
Note: The exhaust manifold is integrated with the catalytic converter, so the exhaust manifold can only be removed as an assembly with the catalytic converter.
Attention:
- The catalytic converter contains ceramic fibers placed in a closed block. Drilling or cutting of the catalytic converter is prohibited.
- Use goggles with side protection and cut-resistant gloves for work.
Removing the exhaust manifold with catalytic converter assembly
1. Place the vehicle on a two post lift.
2. Disconnect the negative battery terminal.
3. Remove the intake duct.
4. Unscrew the fastening bolts and remove the engine protective tray.
5. Remove the oxygen sensors.
6. Loosen the screws (1) and remove the catalytic converter heat shield.
7. Loosen the nuts (2) exhaust pipe on the catalytic converter.
8. Remove the nuts securing the exhaust manifold with catalytic converter assembly to the cylinder head.
9. Loosen the nuts (3) catalytic converter bracket
10. Remove catalytic converter bracket (4).
eleven. Remove the exhaust manifold with catalytic converter assembly.
12. Remove the exhaust manifold gasket.
Installing the exhaust manifold with catalytic converter assembly
Caution: To ensure proper sealing, the contact surfaces must be clean, dry and free from grease (prevent fingerprints).
1. Using fine sandpaper, clean the contact surfaces of the cylinder head, exhaust manifold (if reused), expansion chamber, catalytic converter (if reused).
2. Using a cleaning agent and a clean cloth, clean and degrease the contact surfaces of the cylinder head, exhaust manifold (if reused), expansion chamber, catalytic converter (if reused).
Note:
- If the threaded studs were loosened during removal, apply a high-strength fixing compound to their threads and tighten to 9 Nm.
- The moment of an inhaling of carving hairpins of an exhaust branch pipe the moment of 7 Н·м.
Caution: To prevent overheating of surrounding components, take care not to damage the heat shields (do not tear, bend, stretch, etc.). If the heat shield is damaged in any way, it must be replaced with a new one.
3. Install a new exhaust manifold gasket.
Caution: Be sure to replace the exhaust manifold gasket with a new one.
4. Install the exhaust manifold with catalytic converter assembly.
5. Tighten the nuts of the exhaust manifold with catalytic converter assembly in the sequence shown in the figure to a torque of 25 Nm.
6. Install a new exhaust pipe O-ring.
7. Tighten the nuts of the exhaust pipe and catalytic converter bracket to 21 Nm.
8. Install heat shield.
9. Tighten the catalytic converter heat shield bolts to 12 Nm.
10. Verify that all exhaust pipe heat shields are in place and properly installed.
11. Check the absence of contact between the exhaust pipe and the bottom of the body.
12. Check the tightness of the exhaust pipe.
13. Install oxygen sensors.
14. Install the engine protection tray.
15. Remove the intake duct.
16. Connect the negative battery terminal.