Replace diffuser on exhaust aftertreatment system metering device

AR14.40-W-2043B

22.3.11

ENGINES 457.9 in MODEL 940, 942, 943, 944 with CODE (MS4) BlueTec 4

ENGINES 457.9 in MODEL 940, 942, 943, 944 with CODE (MS5) BlueTec 5

W14.40-1397-12

1 Compressed air pipe

2 O-ring (green)

3 Seal ring (permanently attached to diffuser)

4 Diffuser

5 Seal ring (permanently attached to diffuser)

6 O-ring (green)

7 Dosing device housing

8 Bolts

R28 Heating element

	Replace
1	Remove metering device		AR14.40-W-2002B
2	Remove/install diffuser (4)	 The metering device must be free of any contamination after removal in the area of mounting of the diffuser (4) otherwise this can lead to damage of the component.	AR14.40-W-2043-01A
		 AdBlue residues are to be removed using a lint-free cloth. The component must be swilled with clear water for large amounts and dried using compressed air.
			*BA14.40-N-1044-02B
3	Install metering device		AR14.40-W-2002B

 Exhaust aftertreatment

Number	Designation		Engine 457.9 with code MS4 or code MS5


BA14.40-N-1044-02B	Compressed air pipe to housing	Nm	6

Repair materials

Number	Designation	Order number
BR00.45-Z-1019-06A	ABS sensor grease	A 000 989 62 51 10