Remove/install AdBlue(R) metering valve

AR49.20-D-2000TSR

Remove/install AdBlue(R) metering valve

25.03.2020

Engine

642, 651 in model 907

Modification notes

24.03.2020

Work procedure revised.

Whole document.

Shown with engine 642

1

Clip

2

Metering valve

3

Exhaust pipe

4

Electrical connector

5

Line

 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 avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

Topical note

Notes on use, material properties and handling of NOx reducing agent

AH49.20-N-0002-01A

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

 

Remove/install

1.1

Raise vehicle.

Engine 642, 651 in model 907
except code XM1 (Noise reduction)

Topical note

Special instructions for lifting and supporting vehicle

AH00.60-N-0100-01TS

AR00.60-D-1000-04TS

1.2

Remove the underfloor paneling on the right.

Engine 642, 651 in model 907
with code XM1 (Noise reduction)

AR61.30-D-1001TS

 Installation: Do not install the underfloor paneling on the right until after you have performed a leak test.

2

Unscrew the bolt for the clamp (1).

 Clamp, metering valve to SCR catalytic converter

*BA49.20-N-1003-03TS

3

Open the clamp (1) and remove the metering valve (2).

 Installation: Replace clamp(1). Make sure that the metering valve (2) is correctly positioned. The catch must be in the slot on the exhaust pipe (3) of the SCR catalytic converter.

4

Disconnect electrical connection (4).

5

Remove metering valve (2).


Do not use any tools to release and remove line (5).
Damage can occur to the lock otherwise.

 For this purpose, release and remove line (5). Seal connections.

 WIS Service Media
wsm://04_ 201800_69

 Record plug

*129589009100



Check

6

Check condition of seal at metering valve (2).

If metering valve (2) will not be replaced.

AR49.20-D-2000-01TSR



Clean

7

Clean seat of metering valve (2) in exhaust pipe (3) of SCR catalytic converter.

8

Check sealing surface of metering valve (2) at exhaust pipe (3) for wear and damage.

If wear and/or damage is present:



Replace SCR catalytic converter.

AR49.20-D-8120TSR


Do not rework sealing surface at exhaust pipe (3).
Otherwise leaks and malfunctions may occur.

9

Seal opening at seat of metering valve (2) in exhaust pipe (3) of SCR catalytic converter.

 Record plug

*129589009100

10

Install in the reverse order.

11

Read out the fault memory using the diagnostic unit.



Connect/disconnect diagnostic unit

AD00.00-D-2000-06TS

 Do not remove diagnostic device yet.

If stored faults are present,



Erase the fault memory.

12

Perform parameterization of metering valve (2) using diagnostic device in fuel injection system control unit.

If metering valve (2) was replaced.

13

Disconnect diagnostic unit.



Connect/disconnect diagnostic unit

AD00.00-D-2000-06TS



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

14

Check for leaktightness when engine is running.

 Visual inspection only.

 Exhaust gas aftertreatment

Number

Designation

Model 907 with engine 642

Model 907 with engine 651

BA49.20-N-1003-03TS

Clamp, metering valve to SCR catalytic converter

Nm

5

5