Attention! When assembling the parts of the system, pay attention to the fact that they are rigidly connected. Otherwise, when conducting a study of the composition of exhaust gases, incorrect results can be obtained.
Removing
1. Raise the vehicle.
2. Lubricate all the bolts and nuts of the exhaust system with anti-corrosion grease. Leave bolts and nuts exposed to anti-corrosion grease for a while.
3. Unscrew the bottom front exhaust pipe from the exhaust manifold (158/1).
4. 6-cylinder engine: remove the oxygen sensor.
5. Support the exhaust system with wooden pads.
6. Unscrew on the support (10) bolts (10/3).
7. Loosen nuts (10/2) on threaded plate (10/1). Remove the threaded plate.
8. Unhook the rubber feet (7/1), (9/1), (9/2), (158/2) using a homemade hook.
9. Loosen the complete exhaust system and remove it.
Installation
1. Before installing the exhaust system, check that the flange to the exhaust manifold is not bent, align the flange if necessary.
2. Check the rubber mounts for porosity or damage and replace if necessary.
3. Install the assembled new exhaust system, slightly tighten the connecting flanges.
4. If you are re-installing the parts of the previous exhaust system, then clean the joints with an emery cloth from combustion residues and corrosion.
Attention! To make it easier to separate the nuts and bolts of the exhaust system later, we recommend lubricating them with a high-temperature paste, for example, "Liqui Moly LM-508-ASC".
5. Hang the exhaust system in the rubber mounts (pillows).
6. Align the exhaust system by turning and shifting longitudinally so that there is sufficient clearance with the body all around and that the rubber mounts are evenly loaded.
7. Screw on the threaded plate with a torque of 20 Nm.
8. Tighten the bolts on the connecting flange with a torque of 20 Nm, and on the front exhaust pipe to the manifold with a torque of 30 Nm.
9. 6-cylinder engine: install an oxygen sensor.
10. Start the engine and check the exhaust system for leaks.
11. Lower the car.