Removing and installing catalytic converter

The catalytic converter is removed together with the front exhaust pipe.

Special tools and workshop equipment required

High-temperature paste → Electronic Parts Catalogue.

Removing

Reinstall all cable ties in the same locations when installing.

• Detach electrical connectors -1- and -2- from bracket, unplug connectors and move electrical wiring clear.

• Unscrew bolt -2- and remove screw-type clip.
• Remove bolt -1- and nuts -arrows-.

Vehicles with engine preheater heater element -Z97-

• Unclip locking mechanism -arrow-.

• Pull off wiring -1- on engine preheater heater element -Z97--2-.

• Unscrew nuts -arrows- and remove engine preheating element -Z97- with bracket.

Continuation for all vehicles

• Unscrew bolts -arrows- of bracket.

• Unscrew right nut -arrow- of bracket.

• Unscrew nut -arrow- to the left of the bracket.
• Remove tunnel cross-piece → General body repairs, exterior; Rep. gr.66.

• Remove bolts -arrows-.
• Detach connector from retainer and lay wire leading to lambda probe to one side.

• Loosen clamp -arrow- and push it to rear.

Vehicles with four-wheel drive

• Unbolt flexible coupling of propshaft -1- from bevel box → Final drive, differential; Rep. gr.39.
• Remove bolts -arrows-.

• Push propshaft -1- as far as stop in direction of -arrow-.
• Remove catalytic converter with front exhaust pipe -2- downwards.

Continuation for all vehicles

• Fit screwdriver -2- in recess -arrow- on turbocharger and lever out seal -1-.

Installing

Installation is carried out in the reverse order; note the following:

Renew seal and self-locking nuts.

• Aligning exhaust system free of tension → Chapter.

Specified torques

→ Fig. „“Installing catalytic converter - tightening torque and sequence”“

→ Chapter „Assembly overview - emission control“

→ General body repairs, exterior; Rep. gr.66