Remove/install catalytic converter

AR49.20-P-0100MRI

Remove/install catalytic converter

07.08.2019

Engine

264 in model 205, 253

1

Catalytic converter

2

Clip

3

Clip

4

Bolts

 Warning

Risk of burn injuries, suffocation and poisoning when working on the exhaust system and the components connected to it. Risk of suffocation and risk of poisoning caused by inhalation of gaseous and solid components of the exhaust. Risk of poisoning caused by skin contact with solid components of the exhaust.

Wear protective clothing and safety glasses. Use the extraction system. Move people out of the hazard area.

AS49.00-Z-0001-01A

 Caution

Risk of injury caused by scraping or cutting body parts on sharp vehicle parts

Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.

AS00.00-Z-0017-01A

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

 

Remove/install

1

Remove engine cover.

AR01.10-P-2405MRI

 Installation: Only install engine cover after the leak test.

2

Release and disconnect lambda sensor electrical connector upstream of catalytic converter (G3/2) and unclip electric line.

AR07.04-P-0086MRI

3

Release and disconnect lambda sensor electrical connector downstream of the catalytic converter (G3/1) and unclip electric line.

AR07.04-P-0085MRI

4

Remove center and rear engine compartment lining.

AR61.20-P-1105LW

 Installation: Install center and rear engine compartment lining only after the leak test.

5

Remove clamp (3).

 Installation: Replace clamp (3).

 Clamp at catalytic converter and front exhaust system

*BA49.10-P-1002-02P

6

Remove clamp (2).

 Installation: Replace clamp (2).

 Clamp at turbocharger and catalytic converter/front exhaust line

*BA49.10-P-1001-02P

7

Remove screws/bolts (4).

 Bolt, catalytic converter to bracket

*BA49.10-P-1005-02P

8

Remove catalytic converter (1).

9

Change lambda sensor upstream of catalytic converter (G3/2).

When replacing catalytic converter (1).

AR07.04-P-0086MRI

10

Change lambda sensor downstream of catalytic converter (G3/1).

When replacing catalytic converter (1).

AR07.04-P-0085MRI



Clean

11

Remove combustion and corrosion residue at connecting points.

12

Install in the reverse order.

 Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

13

Perform an engine test run; check the engine for proper operation and the exhaust system for leaks.

14

Install center and rear lower engine compartment lining.

AR61.20-P-1105LW

15

Install engine cover.

AR01.10-P-2405MRI

 Exhaust system

Number

Designation

Model 205 with engine 264

Model 253 with engine 264

BA49.10-P-1001-02P

Clamp at turbocharger and catalytic converter/front exhaust line

Nm

17

17

 Exhaust system

Number

Designation

Model 205 with engine 264

Model 253 with engine 264

BA49.10-P-1002-02P

Clamp at catalytic converter and front exhaust system

Nm

25

25

 Exhaust system

Number

Designation

Model 205 with engine 264

Model 253 with engine 264

BA49.10-P-1005-02P

Bolt, catalytic converter to bracket

Nm

25

25