Replace diffuser on exhaust aftertreatment system metering device

AR14.40-B-2043TC

Replace diffuser on exhaust aftertreatment system metering device

07.11.2019

Engine

924 in model 694.000/042

Engine

924 in model 958.0/1, 979.023/026/028/073/076/078

Engine

926.9 in model 693.298/328/388, 695.010/011/304

Engine

926.9 in model 958.0/1

Engine

926.9 in model 958.2

1

Compressed air tube

2

Sealing ring (green)

3

Sealing ring (fixed on the diffuser)

4

Diffuser

5

Sealing ring (fixed on the diffuser)

6

Sealing ring (green)

7

Metering device housing

8

Bolts

R28

Heating element

 

Remove/install

1

Remove the metering unit

Remove/install metering device for exhaust aftertreatment system
.

AR14.40-B-2002TC

2

Remove and install the diffuser (4)

Remove/install diffuser at the metering device of the exhaust aftertreatment system
.

AR14.40-B-2043-01TA


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.

 AdBlue residues must be removed with 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.

 .Compressed air pipe on housing

*BA14.40-B-1044-02B

3

Install the metering unit

Remove/install metering device for exhaust aftertreatment system
.

AR14.40-B-2002TC

 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