Removing
To remove the rear pre-catalytic converter, the front bank pre-catalytic converter must be removed.
Remove:
- air duct 1;
- wiring harness box 2.
Disconnect:
- motorized throttle valve 3;
- absolute pressure sensor 4;
- suction hose for vacuum brake booster 5:
- two pipelines under the servo throttle body.
Remove:
- intake manifold mounting bolts 6;
- collector by moving it to the battery.
Disconnect the oxygen sensor connectors and disconnect the wire blocks.
Remove:
- collector heat shield:
- stud nuts for fastening the exhaust pipe flange to the manifold;
- oxygen sensors;
- two bolts 7 fastening the strut of the preliminary catalytic converter of the rear row of cylinders.
Remove the pre-catalytic converter.
Installation
The installation is in order. reverse withdrawal.
Insert the studs into the pre-catalytic converter flange.
Replace gaskets with new ones.
Note. Before tightening the subframe front strut bolts, make sure they rest securely on the two axles welded to the body.
Observe tightening torques.
Make sure that the steering column lock securely fixes it
If this is not the case, the steering column height must be readjusted.