Remove/install exhaust system complete

AR49.10-P-7000RT

Remove/install exhaust system complete

23.7.07

9.11.06

Bolt connecting exhaust rubber mount bracket (inner) to body

Engine 113.971, 156 in model 251

*BA49.10-P-1007-01X

Bolt connecting exhaust rubber mount bracket (outer) to bumper bracket

Engine 113.971, 156 in model 251

*BA49.10-P-1008-01X

 

Remove/install

Danger!

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer.

AS00.00-Z-0010-01A

 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

Danger!

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



Notes on self-locking nuts and bolts

AH00.00-N-0001-01A

1

Detach lower engine compartment paneling

AR61.20-P-1105RT

2

Remove stiffening bridge on the left

Engine 113

AR22.10-P-1170RT

Engine 156

AR22.10-P-1170GZS

3

Remove diagonal strut

 Only on vehicles with panoramic glass roof with top sliding roof, code 413.

AR61.10-P-5138RT

4

Remove strut (1b)



*BA49.10-P-1006-01X

5

Unclip electrical lines for O2 sensors from bracket

6

Detach left O2 sensor upstream of TWC connector (G3/3x1), left O2 sensor downstream of TWC connector (G3/5x1), right O2 sensor upstream of TWC connector (G3/4x1) and right O2 sensor downstream of TWC connector (G3/6x1)

7.1

Unscrew bolts (3) and bolt (4) and remove bracket (5)

 Engine 113

7.2

Remove left O2 sensor downstream of TWC

 Engine 156.



*BA14.00-P-1002-01A

8

Remove bolts (8) and bracket (9)

 Engine 113

 Support exhaust system.

 Installation: Mount shim plate between bracket (9) and transmission if not already present.

Replace bolts (8).



*BA49.10-P-1001-01X

9

Remove exhaust rubber mount in the middle (2) on the body



*BA49.10-P-1019-01X

10

Remove exhaust rubber mount inside (1a)



*BA49.10-P-1007-01X

11

Remove exhaust rubber mount outside (1)



*BA49.10-P-1008-01X

12

Remove bottom heat shield from left catalytic converter

 Do not fully remove heat shield, but only slide it towards the rear slightly.

See Remove/install catalytic converter.

AR49.10-P-5500RTN

13

Remove flange connection bolts (6, 7) to exhaust manifold and remove exhaust system downwards

 Do not damage paintwork on rear bumper.



*BA49.10-P-1002-01X



Checking

14

Check exhaust rubber mounts (1, 1a, 2)

 Check for wear, replace if required.

15

Install in the reverse order

16

Check installation position and for unobstructed movement of entire exhaust system

 The exhaust system must be mounted free of tension, align exhaust system if required.

 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

17

Carry out engine test run

 Inspect exhaust system for leaks.

Number

Designation

Engine
156

BA14.00-P-1002-01A

O2 sensor to catalytic converter

Nm

50

Number

Designation

Engine 113 in model 251

Engine
156 in model 251

BA49.10-P-1001-01X

Bolt, catalytic converter bracket to catalytic convertor

Nm

20

20

BA49.10-P-1002-01X

Bolt, flange connection to exhaust pipe/exhaust manifold

Nm

20

20

BA49.10-P-1006-01X

Bolt to rear muffler brace

Nm

20

20

BA49.10-P-1007-01X

Bolt connecting exhaust rubber mount bracket (inner) to body

Nm

18

18

BA49.10-P-1008-01X

Bolt connecting exhaust rubber mount bracket (outer) to bumper bracket

Nm

18

18

BA49.10-P-1019-01X

Bolt, center exhaust rubber mount bracket (inner) to body

Nm

18

18