Replace diffuser on exhaust aftertreatment system metering device

AR14.40-B-2043A

Replace diffuser on exhaust aftertreatment system metering device

28.11.2019

Engine

924.9 in model 368, 384.0/2, 685.282/284/289/290, 979.2

with code MS5 (Euro V)

Engine

926.9 in model 368, 382.17/18, 384.0

with code MS5 (Euro V)

1

Compressed air tube

2

O-ring (green)

3

Sealing ring (fixed on the diffuser)

4

Diffuser

5

Sealing ring (fixed on the diffuser)

6

O-ring (green)

7

Metering device housing

8

Bolts

10

Heating element (17R05)

 

Remove/install

1

Remove the metering unit

.

AR14.40-B-2002A

2

Remove and install the diffuser (4)

.

AR14.40-B-2043-01A


After removing the metering unit, it must be free from any impurities in the area of diffuser assembly (4)
Otherwise this can cause damages in the component.


The measuring device shall be free of contamination after removal from the diffuser mounting area (4),
Otherwise this can damage the component.

 AdBlue residues must be removed using a lint-free cloth.
In case of a large amount of AdBlue, the component must be washed with clean water and dried with compressed air.

ABS sensor grease

*BR00.45-Z-1019-06A

 .Compressed air pipe on housing

*BA14.40-B-1044-02B

3

Install the metering unit

.

AR14.40-B-2002A

 Exhaust gas after-treatment

Number

Designation

Engine 924.9, 926.9 except Liquid Only

BA14.40-B-1044-02B

Compressed air pipe on housing

Nm

6

Repair materials

Number

Designation

Order number

BR00.45-Z-1019-06A

ABS sensor grease

A 000 989 62 51 10