Remove/install catalytic converter

AR49.20-P-0100MRK

Remove/install catalytic converter

05.02.2020

Engine

264 in model 167

1

Catalytic converter

5

Electrical connector

9

Clip

2

Clip

6

Electrical connector

10

Bolts

3

Bolts

7

Plug housing

11

Seal

4

Exhaust system

8

Bracket

12

Bolts

13

Nut

14

Heat shield

 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 avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

Topical note

Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

 

Remove/install

1

Remove center and rear engine compartment lining.

AR61.20-P-1105ME

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

2

Open clamp(2).

 Installation: Replace clamp (2).

 Clamp at turbocharger and catalytic converter/front exhaust line

*BA49.10-P-1001-02P

3

Remove screws (3) and release exhaust system (4) from the catalytic converter (1).

 Screw, bracket for decoupling element to front exhaust system

*BA49.10-P-1009-02P

4

Remove upper engine cover.



AP01.10-P-2405-01I

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

5

Release and disconnect electrical connectors (5, 6).

6

Remove plug housing (7) from the bracket (8).

7

Remove screws (12).

 M61

*BA00.10-P-1002-04A

8

Remove nut (13).

 M61

*BA00.10-P-1002-04A

9

Remove heat shield (14).

10

Release clamp (9).

 Installation: Replace clamp(9).

 Clamp at turbocharger and catalytic converter/front exhaust line

*BA49.10-P-1001-02P

11

Remove screws (10).

 Nut/bolt, holder for catalytic converter to crankcase

*BA49.10-P-1007-02P

12

Remove catalytic converter (1).

 Installation: Install new seal (11) on the exhaust gas turbocharger.

13

Remove combustion and corrosion residue at connecting points.

14

Cover exposed openings with a suitable rag.

15

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

16

Perform engine test run. While doing so, check engine for proper operation and leak tightness.

17

Install bottom, center, and rear engine compartment trim.

AR61.20-P-1105ME

18

Install upper engine cover.



AP01.10-P-2405-01I

 Metric screws/bolts and nuts as per MBN 10 105, 10 143

Number

Designation

8.8

10.9

BA00.10-P-1002-04A

M61

Nm

9

13

 Exhaust system

Number

Designation

Model 167 with engine 264

BA49.10-P-1001-02P

Clamp at turbocharger and catalytic converter/front exhaust line

Nm

17

 Exhaust system

Number

Designation

Model 167 with engine 264

BA49.10-P-1007-02P

Nut/bolt, holder for catalytic converter to crankcase

Nm

20

 Exhaust system

Number

Designation

Model 167 with engine 264

BA49.10-P-1009-02P

Screw, bracket for decoupling element to front exhaust system

Nm

20