Remove/install injection nozzle of exhaust gas aftertreatment system

AR49.20-G-2003CH

Remove/install injection nozzle of exhaust gas aftertreatment system

10.08.2018

Engine

457.9, 458.9 in model 000.001

with BlueTec

1

Injection nozzle

2

Injection line

3

Valve fitting

4

Screw

 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

Notes on use, material properties and handling of AdBlue®

AH14.40-N-0001-01A



Remove

1

Remove injection line (2).

AR49.20-G-1061CH

2

Remove injection nozzle (1).

 Seal bores with suitable stop plugs.



Clean

3

Clean injection nozzle (1) with a lint-free dry cloth.

When reusing the injection nozzle (1).

4

Clean contact surface on valve fitting (3) with a lint-free dry cloth.



Install

5

Install injection nozzle (1).

 In the installed state, the nozzle of the injection nozzle (1) must point to the exhaust pipe.

 Injection nozzle to valve fitting/exhaust pipe

*BA14.40-N-1002-02H

6

Install injection line (2).

AR49.20-G-1061CH

 A new injection line (2) must be installed after every removal.

 Exhaust aftertreatment, Blue Tec

Number

Designation

Engine 457.9, 458.9

BA14.40-N-1002-02H

Injection nozzle to valve fitting/exhaust pipe

Nm

10