AR49.10-P-5531AV Remove/Install Catalytic Converter or Front Exhaust System

Remove and installing catalytic converter or front exhaust system

Shown On Engine 112.940:

1 Disconnect connectors (G3/302x1, G3/4x1) for left and right oxygen sensors before TWC
2 Unscrew bolts (1) at flange connection between front exhaust system/exhaust manifold.

NOTE:
- Loosen flange connection (6) or separate if necessary
- If bolts are sluggish, or thread damaged, Replace rivet nuts in exhaust manifold

3 Unscrew bolts (3) at flange connection between front exhaust system/rear exhaust system

NOTE: Installation: Replace nuts and bolts (3) if necessary.

4 Unscrew nuts (2) on support.

NOTE: Installation: install new nuts.

5 Remove front exhaust system with three-way catalytic converter (4)

- Push rear exhaust system back slightly, or disconnect rear exhaust system if necessary

CAUTION: Ensure that the heat shields of the exhaust system are not damaged when removing and installing the three-way catalytic converter (4).

- Check seal ring (5) for damage and replace if necessary.
- Use emery cloth to remove combustion and corrosion residues at connection points.

6 Install in the reverse order.

NOTE: Install the three-way catalytic converter without stress.