Removing
Remove the engine to remove the pre-catalytic converter.
Pic. 2.289. Removing the heat shield: 1 - fastening bolts
Loosen the mounting bolts and remove the heat shield (pic. 2.289).
Disconnect the wire blocks from the oxygen sensors.
Remove the top mount bracket and top brace.
Remove the catalytic converter strut mounting bracket from the transmission.
Pic. 2.290. Removing the pre-catalytic converter: 1 - oxygen sensors; 2 - top mounting bracket; 3 - upper brace; 4 – strut mounting bracket; 5 – nuts of fastening of catalytic converter
Loosen the catalytic converter mounting nuts on the turbocharger and remove the catalytic converter (pic. 2.290).
Remove the oxygen sensors from the workbench.
Attention! Replace the seals on the exhaust pipe flange and turbocharger.
Installation
Install oxygen sensors.
3torque (38 Nm) bolts securing the upper strut to the engine.
Turn until touching in this order:
- bolts of fastening of an arm of the top fastening;
- nuts fastening the catalytic converter on the turbocharger;
- upper strut catalytic converter mounting bolt.
Tighten in order to the correct torque:
- catalytic converter bolt to upper strut (8.5 Nm);
- upper bolts to exhaust manifold (8.5 Nm);
- Upper tab bolts to pre-catalytic converter (8.5 Nm);
- nuts securing the catalytic converter to the turbocharger (40 Nm);
- oxygen sensors (34 Nm);
- exhaust pipe flange studs (8.5 Nm).
Installation is made in an order, the return to removal.