Remove/install injection nozzle for exhaust aftertreatment system

AR14.40-P-2000ECM

Remove/install injection nozzle for exhaust aftertreatment system

28.06.2019

Engine

642 in model 207

with code U77 (Diesel Emission control BLUETEC (SCR))

Engine

651 in model 207

with code U77 (Diesel Emission control BLUETEC (SCR))

Modification notes

13.10.2016

Replace seal, added.

Operation step 6

Shown on model 207.301 with engine 642

1

Electrical connector

3

Clip

2

AdBlue® line

Y129

AdBlue® metering valve

 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

 Warning

Risk of burn injuries and scalding when working at AdBlue lines and the components attached to them. Risk of injury to skin and eyes when handling AdBlue. Risk of poisoning caused by swallowing AdBlue

Pour AdBlue into suitable containers only. Wait until the pressure is released before starting any work on the exhaust aftertreatment system.

AS14.40-Z-0001-01A

 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

Notes on use, material properties and handling of AdBlue®

AH14.40-N-0001-01A

 

Remove/install

1

Remove rear bottom section of soundproofing

AR94.30-P-5300EW

2

Release and disconnect electrical connection (1)

3

Push the heat insulation of the AdBlue® line (2) somewhat to the rear

4

Disconnect AdBlue® line (2) on the AdBlue® metering valve (Y129) and close off openings with a suitable stop plug

 Installation: Replace seal.

 Record plug

*129589009100

5

Remove clamp (3)

 Installation: Replace clamp (3).

 Engine 651 in model 207
with code U77 (Diesel Emission control BLUETEC (SCR))
except code U42 (BlueTEC diesel exhaust treatment (SCR))Bolt, AdBlue® metering valve clamp to exhaust system

*BA14.40-P-1009-02D

 Engine 642 in model 207
with code U77 (Diesel Emission control BLUETEC (SCR))Bolt, AdBlue® metering valve clamp to exhaust system

*BA14.40-P-1011-02A

6

Remove AdBlue® metering valve (Y129)


Ensure correct positioning of the AdBlue® metering valve (Y129). The lugs of the AdBlue® metering valve (Y129) must sit in the grooves of the exhaust pipe.
Non-observation leads to wrong assembly and damage to the AdBlue® metering valve (Y129).

 Installation: Replace seal.



Clean

7

Clean AdBlue® line (2) at connection

8

Clean seat of the AdBlue® metering valve (Y129) in exhaust pipe and close off opening with a protective cover

 Set of protective covers

*001589019100

9

Install in the reverse order

10

Read out and erase fault memory

When replacing the AdBlue® metering valve (Y129).



AD00.00-P-2000-04A

 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

11

Perform an engine test run and check exhaust system in the area of the AdBlue® metering valve (Y129) for leaktightness

 Exhaust aftertreatment, BlueTec

Number

Designation

Engine 651 in model 207
with code U77 (Diesel Emission control BLUETEC (SCR))
except code U42 (BlueTEC diesel exhaust treatment (SCR))

BA14.40-P-1009-02D

Bolt, AdBlue® metering valve clamp to exhaust system

Nm

11

 Exhaust aftertreatment, BlueTec

Number

Designation

Engine 642
with code U77 (Diesel Emission control BLUETEC (SCR))

BA14.40-P-1011-02A

Bolt, AdBlue® metering valve clamp to exhaust system

Nm

11