Replace diffuser on exhaust aftertreatment system metering device · ar1440b2043b · Mercedes-Benz WIS

AR14.40-B-2043B

Replace diffuser on exhaust aftertreatment system metering device

12.02.16

Cumbustion engine 457.9 with Vehicle 382.15# #D, 634.0## #D with CODE MS5 (BlueTec 5)

B14.40-0020-12

1 Compressed air tube

2 O-ring (green)

3 Sealing ring (fixed on diffuser)

4 Diffuser

5 Sealing ring (fixed on diffuser)

6 O-ring (green)

7 Metering unit housing

8 Screw

10 Heating element (17R05)

	Replace
1	Remove the metering unit		AR14.40-B-2002B
2	Remove and install the diffuser (4)	The metering unit, after removal, has to be free of any impurity in the mounting area of the diffuser (4), otherwise this can lead to component damage.	AR14.40-B-2043-01A
		 AdBlue residue has to be removed with a lint free cloth. In the case of large amount, the component has to be washed with clean water and dried with compressed air jets.
			*BA14.40-B-1044-02C
3	Install the metering unit		AR14.40-B-2002B

Exhaust aftertreatment

Número	Denominação		Engine 457.9 with Code MS5


BA14.40-B-1044-02C	Compressed air pipe on housing	Nm	6