Remove/install SCR catalytic converter · ar1440d2006e · Mercedes-Benz WIS

AR14.40-D-2006E

Remove/install SCR catalytic converter

12.03.2019

Engine	651 in model 906
	with code MP6 (Engine version, Euro VI)
	with code ZJ8 (Configuration Mercedes-Benz Minibus (MBM))

Modification notes

11.03.2019

Method supplemented, document contents updated.

The whole document

D14.40-0162-09

3	SCR catalytic converter	7	Decoupling element	A97/2	NOxsensor control unit downstream of SCR catalytic converter
4	NOxsensor	8	Decoupling elements	B16/12	Temperature sensor upstream of SCR catalytic converter
6	Clamp

 Danger	Risk of death caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.	AS00.00-Z-0010-01A
 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
 Warning	Risk of burn injuries and scalding when working on AdBlue(R) lines and the component parts attached to them. Risk of injury to skin and eyes when handling AdBlue(R). Risk of poisoning caused by swallowing AdBlue(R)	Pour AdBlue® only into suitable containers. Wait until the pressure is released before starting any work on the exhaust aftertreatment system.	AS49.20-Z-0002-01A
 Warning	Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.	Wear protective gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
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	Raise vehicle.		AR00.60-D-1000H
2	Unscrew temperature sensor upstream of SCR catalytic converter (B16/12) from SCR catalytic converter (3).		AR14.40-D-2011E
3	Unscrew NOx sensor (4) from SCR catalytic converter (3).		AR14.40-D-2060E
4	Remove AdBlue® injection line from AdBlue® metering valve.		AR14.40-D-2000S
5	Release clamp (6).	 Clamp, diesel particulate filter to SCR catalytic converter	*BA49.10-N-1013-01I
6	Remove SCR catalytic converter (3) from decoupling elements (8).	 Installation: Replace safety clamps.
		 Installation: Check decoupling elements (8) for damage.
		Depending on the findings,
		
		replace damaged decoupling elements (8).
7	Remove SCR catalytic converter (3).	 To do so, unfasten SCR catalytic converter (3) from decoupling element (7) and remove.
		 Installation: Check decoupling element (7) for damage.
		Depending on the findings,
		
		replace damaged decoupling element (7).
8	Install in the reverse order.
9	Connect diagnostic system and clear fault memory.	When replacing the SCR catalytic converter (3)/the NOx sensor (4).
			AD00.00-D-2000-04SD
		 Do not yet remove vehicle diagnosis system.
10	Carry out initialization of the NOx sensor control unit downstream of SCR catalytic converter (A97/2) using the vehicle diagnosis system.	When replacing the SCR catalytic converter (3)/the NOx sensor (4).
11	Remove vehicle diagnosis system.	When replacing the SCR catalytic converter (3)/the NOx sensor (4).
			AD00.00-D-2000-04SD
	Check
 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
12	Check for leak tightness when engine is running.

 Exhaust system

Number	Designation		Engine 651 in model 906 except code MS3 (Engine version EURO 3)
BA49.10-N-1013-01I	Clamp, diesel particulate filter to SCR catalytic converter	Nm	35

Referenced documents

ad0000d200004sd Connect STAR DIAGNOSIS and read out fault memory
ah0000n000101a Notes on self-locking nuts and bolts
ah0000p500001a Notes on avoiding damage through contamination and foreign objects
ar0060d1000h Lift/jack up vehicle
ar1440d2000s Remove/install injection nozzle for exhaust aftertreatment system
ar1440d2011e Remove/install temperature sensor upstream of SCR catalytic converter
ar1440d2060e Remove/install NOx sensor downstream of SCR catalytic converter
as0000z000201a Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.
as0000z000501a 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.
as0000z001001a Risk of death caused by vehicle slipping or toppling off of the lifting platform.
as4900z000101a 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.
as4920z000201a Risk of burn injuries and scalding when working on AdBlue(R) lines and the component parts attached to them. Risk of injury to skin and eyes when handling AdBlue(R). Risk of poisoning caused by swallowing AdBlue(R)