Remove/install catalytic converter · ar4910d5500us · Mercedes-Benz WIS

AR49.10-D-5500US

Remove/install catalytic converter

11.3.10

ENGINE 272.979 in MODEL 906
Catalytic converter for left cylinder bank

D49.10-1126-09

1 Catalytic converter

2 Exhaust manifold

4 Electrical connectors

3 Rear engine crossmember

D49.10-1129-12

1 Catalytic converter

5 Center exhaust

6 Bracket

 	Remove/install
 Danger!	Risk of injury to skin and eyes caused by handling hot or glowing objects.	Wear safety gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
	Notes on self-locking nuts and bolts		AH00.00-N-0001-01A
1	Remove rear engine crossmember (3)		AR22.10-D-1170SD
2	Remove catalytic converter bolts (1) on exhaust manifold (2)	 Installation: Check rivet nuts in exhaust manifold (2); replace if necessary. Refer to: 
		Replace rivet nuts in exhaust manifold (2).	AR49.10-D-5531-01US
			*103589013900
			*BA49.10-N-1001-01L
3	Remove catalytic converter (1) on bracket (6)
4	Unclip electrical connectors (4) for O2 sensors from retaining clips on transmission, disconnect and expose electrical lines to O2 sensors on transmission	 Installation: Note installation of lines and replace cable ties.
5	Remove catalytic converter (1) on center exhaust (5)	 Installation: Clean sealing surfaces.
			*BA49.10-N-1002-01L
6	Remove O2 sensors from catalytic converter (1)	When replacing catalytic converter (1).
		 Installation: Coat thread of O2 sensors with hot lubricating paste.
			*BA14.00-N-1001-01C
			*000589710300
		Paste	*BR00.45-Z-1005-06A
7	Install in the reverse order
 Danger!	Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running	Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
8	Perform engine test run and inspect exhaust system in the area of catalytic convertor (1) for leaks

O2 sensor

Number	Designation		Engine 272.979 in model 906


BA14.00-N-1001-01C	O2 sensor to catalytic converter	Nm	45

 Exhaust system

Number	Designation		Engine 272.979 in model 906


BA49.10-N-1001-01L	Bolt connecting catalytic converter to exhaust manifold	Nm	20
BA49.10-N-1002-01L	Bolt, catalytic converter to central exhaust system	Nm	20

103 589 01 39 00

Caulking bolt

Box wrench bit

000 589 71 03 00

Repair materials

Number	Designation	Order number
BR00.45-Z-1005-06A	Paste, hot lubrication 1 kg, DB supply specification 6879.20	A 000 989 76 51

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