Removing and installing three way catalytic converter or front exhaust system - AR49.10-P-5531D

ENGINE 104 in MODEL 124, 129, 140, 202 

ENGINE 111 in MODEL 124, 202 

Fig 1: Identifying Three Way Catalytic Converter Or Front Exhaust System Remove/Install Components - Model 124 & 202 With Engine 104

Fig 2: Identifying Three Way Catalytic Converter Or Front Exhaust System Remove/Install Components - Model 124 & 202 With Engine 111

	Removal, installation
1	Replace self-locking nuts and gaskets. Ensure gaskets and flanges are correctly installed	Use emery cloth to clean off combustion and corrosion residues at connection points if necessary
2	Disconnect connectors (arrows) for oxygen sensor
3	Replace rivet nuts in exhaust manifold	Replace if necessary	AR49.10-P-5531-01DA
4	Remove threaded plate	Installation ↓
		Pay attention to installation of threaded plate Engine 104 in model 124, 129, 140, 202 Engine 111 in model 124, 202	AH49.10-P-9409-01A
5	Install in reverse sequence	A shield as heat insulation is attached additionally to the catalytic converter for Nordic countries and Switzerland. Pay attention to TWC thermocouple
	Front exhaust pipes insulated		BT49.10-P-9404-01D
	Shape and cross section of three way catalytic converter modified		BT49.10-P-9404-02D
	Notes re disposing of catalytic converters	On models with catalytic converter Code 620a	OS49.10-P-1000-01A

Fig 3: Identifying Caulking Bolt (103 589 01 39 00)